15th International Conference on Nuclear Data for Science and Technology (ND2022)

Session

Poster session

26 Jul 2022, 07:45

Gold Rush

418. Comparison of double-differential cross section between nuclear data library and experimental data for photoneutron production

Dr Kim Tuyet Tran (SOKENDAI)

26/07/2022, 07:45

Radiation shielding and calculation are essential for the construction and operation of accelerator facilities. High energy gamma-rays in accelerators can produce secondary neutrons, which can penetrate through shielding materials and produce additional dose rate by activating accelerator components; thus, the double differential cross sections (DDXs) of photoneutron are very essential....

419. Activation Cross Section Measurement of the (n,2n) Reaction on 203Tl

Maria Diakaki (Department of Physics, National Technical University of Athens, Zografou campus, 15780 Athens, Greece), Maria Diakaki (Department of Physics, National Technical University of Athens, Zografou campus, 15780 Athens, Greece)

26/07/2022, 07:48

Studies of neutron-induced reactions are of considerable significance, both for their importance to basic research in nuclear physics and for practical applications in nuclear technology, medicine and industry. Thallium is widely used in electronics, pharmaceuticals, fiber optics, infrared detectors and nuclear medicine. However, little information is available in literature for neutron...

420. Fusion excitation function studies in the reactions forming medium heavy compound system

Visakh A C (Central University of Kerala)

26/07/2022, 07:51

Nuclear fusion is a complex process involving a complete re-arrangement of quantum systems with many degrees of freedom. Heavy ion fusion exhibits a strong entrance channel dependence at near fusion barrier energies and could be reasonably explained by coupled channels formalism [1,2] that explicitly includes the effects of internal degrees of freedom. Though tremendously successful in...

421. Using Monte-Carlo method to analyze experimental data and produce uncertainties and covariances.

Dr Greg Henning (CNRS - IPHC)

26/07/2022, 07:54

The production of useful and high-quality nuclear data requires experimental measurements with high precision and extensive information on uncertainties and possible correlations. When performing experimental measurement data analysis, the physicist uses many external parameters (detector efficiencies, distance of flight, …) in addition to the raw data. All the steps of the data processing...

422. Experimental measurement of 183W(n, n’γ) and (n, 2nγ) cross sections (preliminary)

Greg Henning

26/07/2022, 07:57

Most nuclear reactor developments rely on evaluated databases for numerical simulations to optimize and predict performance and reactor control parameters. However, these databases still present large uncertainties, preventing calculations from reaching the required precision. An improvement of evaluated databases requires new measurements and better theoretical descriptions of involved...

425. Experiment-based determination of the excitation function for the production of $^{44}$Ti in proton-irradiated vanadium samples

Mario Veicht (Paul Scherrer Institut (PSI); École polytechnique fédérale de Lausanne (EPFL))

26/07/2022, 08:00

The artificial production of radionuclides has considerable significance for many different applications. Recently, we observe increasing interest in the field of nuclear medicine, with $^{44g}$Sc being one of the promising nuclides for positron emission tomography. Besides its direct production routes by irradiating suitable targets like Sc or Ti with charged particles, $^{44}$Ti is in the...

427. Measurement of differential and double differential cross-section for natural Gallium at 8.0 MeV neutrons

Hanxiong Huang (CIAE)

26/07/2022, 08:03

The metal gallium is a very interesting element on earth. It is a liquid at temperatures greater than 29.76 °C and has a very high boiling point (2229 ◦C). Gallium has widely been used to make alloys with low melting points and has become a candidate element in Chinese Initiative Accelerator Driven Systems (CIADS) project for liquid–metallic coolant [ ]. The neutron cross section of gallium is...

428. Target mass dependence of photoneutron spectrum for 16.6MeV photons on medium-heavy mass targets

Toshiya Sanami (KEK/SOKENDAI)

26/07/2022, 08:06

Experimental data on photoneutron spectrum for reaction of 16.6MeV mono-energetic polalized photons on medium-heavy mass targets were obtained at BL-01, NewSUBARU, Hyogo, Japan. The data consists of low energy neutrons having energy distribution similar to tail of Maxwellain and relatively high energy ones originated from decay of pre-equilibrium status. In this presentation, quantities...

429. First on-beam measurements with the new detection system for the measurements of light-ion products of nuclear reactions induced by fast neutrons with energies from 18 to 33 MeV

Mr Martin Ansorge (Nuclear Physics Institute of the Czech Academy of Sciences)

26/07/2022, 08:09

The new detection device for measurements of light ions (p, d, t, α) emitted as products of the
nuclear reactions induced by fast neutrons was recently developed at the Nuclear Physics Institute of
the Czech Academy of Sciences. The device consists of the vacuum chamber and rotational table with
the detection telescopes composed of two Si detectors for dE–E charged particle recognition. It is...

430. Time dependence of prompt fission $\gamma$-ray emission

Andreas Oberstedt (Extreme Light Infrastructure - Nuclear Physics)

26/07/2022, 08:12

Prompt fission $\gamma$ rays (PFG) account for 40% of the total $\gamma$ heating in the core of a typical fast reactor, which in turn constitutes about 10% of the total energy release in fission [1]. Therefore, precise knowledge about multiplicities and $\gamma$-ray energies is important. Prompt fission $\gamma$ rays are commonly defined as those emitted in coincidence with fission fragments,...

431. Prediction of prompt neutron spectra of the photon induced reactions on the 238U and 232Th targets at incident energies from 4 and 22 MeV

Anabella Tudora (University of Bucharest)

26/07/2022, 08:15

The prediction of prompt neutron spectra of the photon-induced reactions on the 238U and 232Th targets are needed in the treatment of experimental data of the reactions induced by quasi monochromatic γ-ray beams produced in laser Compton-scattering at the NewSUBARU synchrotron radiation facility.
Unfortunately any experimental information concerning both the fission fragments and the prompt...

432. Application of Multipole humped fission barriers in the Unified Hauser-Feshbach and Exciton Model for Fission Nuclei

Yuan Tian (China Institute of Atomic Energy)

26/07/2022, 08:18

We have added the multipole humped fission barriers model into the Unified Hauser-Feshbach and Exciton Model for Fission Nuclei (FUNF). With the help of the MINUIT, we optimized the parameters of FUNF to reproduce the cross-section of neutron-induced $^{238}U$. The double-humped fission barrier can be used to explain the low energy resonance structure of $n+^{238}U$ fission cross-section at low energy.

433. Role of transport coefficients in fission dynamics

Mr Kazuki Okada (Department of Pure and Applied Physics, Kansai University)

26/07/2022, 08:21

The Langevin approach has been widely used in the study of fission. In this approach, the fission process is described as the time evolution of the shape deformation of the nucleus, and the fragment mass and kinetic energy distributions can be calculated. The physical inputs for the Langevin equation are the potential energy of deformation and two transport coefficients: the inertia and the...

434. Towards a Langevin Model for the Stochastic Dynamics of Nuclear Fission

Trevor Sprouse (Los Alamos National Laboratory)

26/07/2022, 08:23

A robust description of the process of nuclear fission is essential to many research domains ranging from nuclear energy, national security, and nuclear data. However, owing to the nuclear many-body problem, a description of fission based on nucleon-nucleon interactions is unfeasible given current computational limitations, which has led to a number of alternative methods that greatly reduce...

435. Theoretical calculation and evaluation for n+232,234,236,237U reactions

Yinlu Han (China Institute of Atomic Energy)

26/07/2022, 08:25

Abstract
In order to reduce the uncertainties in the design and operation of accelerator-driven systems (ADSs), high-precision nuclear data for neutron- and proton-induced reactions on a variety of isotopes in the energy range below 200 MeV are necessary. As the important component of the spent fuel of current nuclear power plants, U isotopes will be loaded into ADSs to produce energy and...

437. (WITHDRAWN) Improving the prediction of TSL on-the-fly based on deep neural networks using experimentally measured double differential data and dynamic structure factor

Vaibhav Jaiswal (Institut de Radioprotection et de Sûreté Nucléaire (IRSN))

26/07/2022, 08:27

Improving the prediction of TSL on-the-fly based on deep neural networks using experimentally measured double differential data and dynamic structure factor

Vaibhav Jaiswal$^{1,*}$, Arthur Pignet$^2$, and Luiz Leal$^1$

$^1$Insititut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses, France
$^2$MINES ParisTech, PSL - Research University, Centre for Material Forming...

436. Calculation of fission product mass distribution by using a semi-empirical model and neutron multiplicity data

Jounghwa Lee

26/07/2022, 08:29

Fission fragments are highly excited after scission, and they de-excite by the emission of neutrons and the subsequent gamma emission. The products before and after the emission of neutrons and gammas are called pre- and post-neutron fission fragments, respectively. Pre- and post-neutron emission fission product yields (FPY) can be related through the emitted neutrons, i.e. neutron...

438. Thermal scattering libraries for cold and ultra-cold neutron reflector materials

Douglas Di Julio (European Spallation Source ERIC)

26/07/2022, 08:31

Reflectors play an important role at reactor and spallation neutron sources, providing a means for otherwise lost neutrons to be potentially re-directed towards the neutron science instruments. Such materials typically surround the moderating volume, but can also be placed in the neutron beam extraction area. We present developments of improved modelling methods such as including crystallite...

440. The validation of S(α,𝛽) thermal neutron scattering libraries using pulsed-neutron die-away experiments

Mr Benjamin Wang (RPI)

26/07/2022, 08:33

Validation of the accuracy of S(α,𝛽) thermal scattering law (TSL) evaluations for moderator materials is an important task for the development of high-performance nuclear engineering systems. Many recent thermal neutron scattering evaluations have had limited experimental validation. Like other nuclear data, validation of TSL libraries has historically been by integral criticality...

441. Evaluation of Thermal Neutron Scattering Law and Cross Sections for Calcium Hydride

Mr Benjamin K. Laramee (North Carolina State University)

26/07/2022, 08:35

Metal hydrides have a variety of mechanical, thermal, and neutronic properties that are ideal for applications to nuclear technologies. As a result, zirconium hydride has been used in the fuel of TRIGA reactors for over half a century. More recently, calcium hydride (CaH${}_{2}$), a saline hydride, has been investigated and shows promise for use as a moderator in microreactors. As of yet,...

442. Validation of calculational determination of 18O(p,n) secondary neutron field

Marek Zmeškal (Research Centre Řež s.r.o.)

26/07/2022, 08:36

The medical cyclotrons intended to produce medical isotopes are relatively widespread. Nowadays, it is popular to place small and compact accelerators directly to hospitals. This approach simplifies handling with produced radiopharmaceuticals, but it imposes radiation safety measures during production. Radiation protection issues are gaining on importance especially as production increases on...

443. (WITHDRAWN) Short-Lived Fission Product Yield Results At Oregon State University

Aaron Tamashiro (Oregon State University)

26/07/2022, 08:37

Fission product yields play an important role for nuclear reactor fuel cycle, nuclear reactor
decay heat, and nuclear reactor waste inventory. Multiple techniques have been used to determine
fission product yields for many decades to support reactor design. For our purposes, we will be
performing $\gamma$-ray spectroscopy on $\beta$-decaying fission products following a prompt fission...

447. Federated Transfer Learning for Scalable Condition based Monitoring of Nuclear Power Plant Components

Koushik Araseethota Manjunatha (Idaho National Laboratory)

27/07/2022, 09:30

Condition-based monitoring (CBM) techniques are widely being adopted for maintenance activities in nuclear power plants. Asset operational data are collected by smart sensors mounted on and around the components. The sensed data is often gathered and processed by a monitoring and diagnostic center to garner various component fault signatures. These fault signatures are subsequently used as...

448. Network-based Data Acquisition and Control for BGS and FIONA experiments

John Gooding

27/07/2022, 09:33

Experiments done at the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory to study super heavy elements and their basic physics and chemistry using the Berkeley Gas-filled Separator (BGS) and For the Identification of Nuclide A (FIONA) apparatuses are complex and employ dozens to hundreds of pieces of individual equipment setup in series and parallel along the beam-line.

Over the...

450. FLUKAVAL - A validation framework for the FLUKA radiation transport Monte Carlo Code

Markus Widorski

27/07/2022, 09:36

The FLUKA general purpose radiation transport Monte Carlo code being developed and maintained by CERN has adopted modern software development standards including a formal quality assurance process. This includes the FLUKAVAL testing framework that takes into account the specific needs of testing a Monte Carlo radiation transport simulation code.

FLUKAVAL is a...

451. Application of Machine Learning algorithms for experimental data processing and estimation of 96Mo (n, p) 96Nb reaction cross section

Sangeetha Prasanna Ram

27/07/2022, 09:39

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\textbf{\large Application of Machine Learning algorithms for experimental data processing and estimation of $^{96}$\emph{Mo}(n, p)$^{96}$\emph{Nb} reaction cross section }\
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% Author names and affiliations
Sangeetha Prasanna Ram$^1$, Jayalekshmi Nair$^1$, Singh Vivek Virendra$^2$, Dhanamma Jagli$^2$, S. Ganesan$^3$, S. V. Suryanarayana$^3$...

452. Unscented Transform Kalman filter for Optical model parameter uncertainty quantification

Mr Aman Sharma (Department of Physics, Banaras Hindu University, Varanasi-221005, India)

27/07/2022, 09:42

454. Calculations and Evaluations of n+ 107,109Ag Reactions below 20 MeV

Tingtai Wang (Zhongyuan University of Techonology)

27/07/2022, 09:45

All the cross sections of neutron-induced reactions, angular distributions, energy spectra, and double-differential cross sections for n+ 107, 109Ag reactions are calculated and analyzed below 20 MeV by using UNF code. The isomeric cross sections are also calculated. Furthermore the theoretical results are compared with the available experimental data and the evaluated results in ENDF/B-Ⅷ.0,...

455. Design study of benchmark experiment for large angle scattering cross section for non-solid target with 14 MeV neutron

Sota Araki (Osaka University)

27/07/2022, 09:48

Abstract:
Accuracy of large angle scattering cross section in nuclear data have a large influence on precision of neutron transport calculation in fusion reactor design. In previous research, benchmark experiments for solid target were carried out, however, non-solid targets, which are covered by a casing, could not be dealt with. This is because we could not remove the casing effect in the...

456. Global Analysis of 4He System with RAC

Libo Zhou

27/07/2022, 09:51

Both neutron nuclear reaction data and fusion reaction data of $^4$He system play an important role in astrophysics and energy fields. Especially the microscopic nuclear cross section of the fusion reaction D(d,n)$^3$He is the core data among them. However, there are obvious differences among current experimental data for the incident energy from 0.2 to 1 MeV, and there is no experimental data...

457. CONFLUX – A Flexible, Modular Reactor Neutrino Flux Calculation Framework

Dr Xianyi Zhang (Lawrence Livermore National Laboratory)

27/07/2022, 09:54

The predicted reactor antineutrino flux is an important ingredient for particle physics measurements and neutrino-based safeguards applications, ranging from neutrino oscillation measurements to monitoring reactor fuel and operations. Over the past decade, comparisons between predictions and reactor neutrino experiments have revealed significant discrepancies which have motivated new neutrino...

458. BNCODE – THE SCIENTIFIC SUPERVISOR SIMULATION CODE FOR A COMPUTATIONAL SUPPORT OF THE BN REACTORS

Viacheslav Mishin (JSC "SSC RF-IPPE")

27/07/2022, 09:57

The necessity to operatively concern the growing needs of the BN-600 reactor support as well as the commissioning of the BN-800 reactor which also has a task of scientific support have led to the necessity of a new generation simulation support code development. This new generation code would make it possible to flexibly consider actual demands of scientific support of both reactors. In future...

459. Experimental spectrum average cross sections in $^{252}$Cf(sf) neutron field and its impact on evaluation of Neutron Standards

Roberto Capote (IAEA NDS)

27/07/2022, 10:00

Evaluation of Neutron Data Standards have been a critical component of ENDF/B library releases which is currently coordinated by the IAEA. The latest Neutron Data Standards were released in 2017 [1] and were adopted for the ENDF/B-VIII.0 library [2]. Since very early on, the Neutron Data Standards have been derived using the Bayesian GMA code originally developed by W. Poenitz with an...

460. Implementation of the RESKR module in NJOY

Prof. Alain Hébert (Polytechnique Montréal)

27/07/2022, 10:03

Abstract

The Blackshaw-Murray[1] elastic kernel represents the effect of neutron up-scattering caused by thermal motion of target nuclei and resonance elastic scattering on the multigroup scattering matrices. A first implementation of this model was proposed by Ouisloumen and Sanchez and made available in proprietary cross-sections libraries of the PARAGON and APOLLO lattice codes.[2]...

461. Development of an Interactive System for the Use of Nuclear Data (ISIDA)

Darya Panova (JSC "SSC RF - IPPE")

27/07/2022, 10:06

The main objective of the article is development of a digital platform for visualization and processing of nuclear data.
It is based on the idea of saving the experience accumulated over many years of working with libraries of nuclear-physical data for various purposes. The main task is to provide users with open and convenient access to various types of nuclear data archives for conducting...

462. Fission product depletion chain simplification method based on quantitative contribution function

Lili Wen (China Institute of Atomic Energy)

27/07/2022, 10:09

Recently, an advanced neutronics lattice code called Kylin-2 has been developed by Nuclear Power Institute of China. In order to develop multi-group library for Kylin-2, a fission product depletion chain simplification method was proposed in this paper to generate burnup data for the multi-group library. This method constructed two quantitative contribution functions based on the thought of...

465. Regression analysis of experimental reaction cross-section data of 241Am(n, 2n)240Am

Ms Tejashree Phatak (Vivekanand Education Society's Institute Of Technology)

27/07/2022, 10:12

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\textbf{\large Regression analysis of experimental reaction
cross-section data of $^{241}$\emph{Am}(n, 2n)$^{240}$\emph{Am}}\...

466. Non-statistical Behaviour of (n,2n) Cross Sections for 14-15 MeV Neutrons

Dr Odsuren Myagmarjav (Nuclear Research Center, National University of Mongolia, Ulaanbaatar, Mongolia School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar, Mongolia)

27/07/2022, 10:14

Fast neutron induced nuclear reaction cross section data are necessary for both nuclear energy technology and the study of nuclear physics research. The information of (n,2n) cross sections is quite essential in nuclear reactor technology as a significant portion of the fission neutron spectrum lies above the threshold of (n,2n) reaction for most structural materials. Furthermore, the...

467. Preequilibrium models for 58Ni(n,xp) reaction in neutrons at 8, 9, 9.4, 11 and 14.8 MeV using the EMPIRE and TALYS codes

Leila Yettou

27/07/2022, 10:16

In this study, the calculations of proton emission spectra produced by 58Ni(n,xp) reaction are used in the framework of preequilibrium models with the EMPIE and TALYS codes. Exciton model predictions combined with the Kalbach angular distribution syqtematics were used, and some necessary parameters have been investigated for our calculations. The comparison witj experimental data shows clear...

470. Comparison of binding energy from Atomic Mass Evaluation (AME-2020) with statistical model calculations.

Mr Ranjan Sariyal (Department of Physics, Panjab University, Chandigarh, India)

27/07/2022, 10:18

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\title{\myfont{\textbf{Comparison of binding energy from Atomic Mass Evaluation (AME-2020) with statistical model...

471. The effect of high dose rate laser driven radiation on the integrity of amino acids and implications in toxicity evaluation

Silvana Vasilca (National Institute for Physics and Nuclear Engineering IFIN-HH, Extreme Light Infrastructure - Nuclear Physics ELI-NP & IRASM Departemnt; 3University of Bucharest, Faculty of Chemistry, Department of Analytical Chemistry)

27/07/2022, 10:20

Lately, novel radiation therapy methods using advanced laser technologies with ultra-high dose rates (“FLASH”), such as laser-accelerated particle beams and laser-driven ionizing radiation in pulses, with time spans from fs to ns started to emerge, having encouraging results in numerous studies concerning toxicity characterization [1,2]. Significant parameters of radiation therapies like high...

474. Expanded COG Criticality Validation Suite for Inter-Laboratory Benchmark Data Comparison

David Heinrichs (Lawrence Livermore National Laboratory)

27/07/2022, 10:22

The COG suite of criticality benchmarks has been formally expanded to 3,368 to cover the entire energy range from thermal to fast neutron spectra under a variety of reflector and moderator conditions and fissile materials. The number of benchmark cases in each of these six major categories is summarized in Table 1.

Table 1. Number of Benchmark Cases.
Category Number of...

475. The Calculation and Comparing of Benchmark Models with ENDF/B-VIII.0 and CENDL-3.2 Fe-56 Nuclear Data

博 史 (中国工程物理研究院研究生院), Dr 晓波 刘 (核物理与化学研究所)

27/07/2022, 10:23

In order to compare the ENDF/B-VIII.0 and CENDL-3.2 Fe-56 nuclear data, 28 iron sensitive models were selected from the International Criticality Safety Benchmarking Experiments Evaluation Program. There are 21 highly enriched models and 7 plutonium mental models. The benchmark models were modeled in MC program and k_{eff} calculated with ENDF/B-VIII.0, with a hybrid ENDF/B-VIII.0 with...

473. (WITHDRAWN) Evaluated excitation functions for Iodine isotope production in Thorium and Uranium targets irradiated by protons up to 200 MeV

Dr Alexey Stankovskiy (Belgian Nuclear Research Centre SCK CEN)

Preliminary assessment of the dose due to potential atmospheric release from MINERVA Proton Target Facility (PTF) being designed at SCK CEN has identified isotopes of Iodine (notably 125I, 126I and 131I) as major contributors [1]. Iodine is a volatile element and its retention in the structures is limited. Therefore, its production in the PTF actinide ISOL (Isotope Separation On-Line) targets...

453. (WITHDRAWN) Evaluation of nuclear data of 232-Th(n, 2n)231-Th reaction cross section with inclusion of a comprehensive covariance analysis

Dr Meghna Karkera (Department of Data Science, Manipal Academy of Higher Education 576104, Manipal, India)

In this paper, we present the interesting details of our attempts to create a basic evaluated nuclear data file for $^{232}$Th(n, 2n)$^{231}$Th reaction cross section, in the Indian context [1]. The work presented in this paper on nuclear data evaluation process includes performing our own Indian measurements of this
nuclear reaction data with detailed covariance analysis and including them in...

464. (WITHDRAWN) EXFOR-NSR PDF database of original publications

Dr Viktor Zerkin (International Atomic Energy Agency)

EXFOR (EXchange FORmat) and NSR (Nuclear Science References) databases contain experimental nuclear reaction and comprehensive bibliography information since the beginning of nuclear science developed within the framework of the NRDC (Nuclear Reaction Data Centers) network and under the auspices of the USNDP (US Nuclear Data Program). The both databases include compilations of original...

439. (WITHDRAWN) High Temperatures Thermal Neutron Scattering Cross Sections of Aluminum

Dr Iyad Al-Qasir (Department of Mechanical and Nuclear Engineering, University of Sharjah, Sharjah 27272, UAE)

For solid moderators, the incoherent approximation has been widely used to calculate thermal neutron scattering laws at different temperatures. The only input needed in the incoherent approximation is the phonon density of states. Traditionally, the phonon densities of states are calculated by fitting the interatomic force constants to experimental data, such as low-temperature inelastic...

444. (WITHDRAWN) Maxwell–Boltzmann-like neutron spectrum at kT = 28 keV for Maxwellian averaged cross section measurement

Dr Elizabeth Musacchio González (Laboratori Nazionali di Legnaro - Istituto Nazionale di Fisica Nucleare, (LNL-INFN), Italy)

In the Universe, the observed elements heavier than iron (Fe) are mostly produced by neutron-capture processes in the stars. These processes are defined as s (slow) and r (rapid) processes. The experimental measurement of the neutron capture cross sections is an actively working task, since it is an essential element in the stellar reaction rates calculations and thus, the possibility of...

423. (WITHDRAWN) MEASUREMENTS OF GOLD AND YTTRIUM (n,2n) REACTION CROSS SECTIONS AT 14 MeV

Julien Cartier

In this paper, we present new cross sections measurements of the 197Au(n,2n)196Au and 89Y(n,2n)88Y reactions induced by ~14MeV neutrons. These new measurements are determined with a relative activation method.
We irradiate foils targets of gold and yttrium with ~14MeV neutron flux produced using the SAMES neutron accelerator facility [1] at CEA of Valduc, through the d+t-> n14,7 MeV+α...

463. (WITHDRAWN) Modelling gamma-ray spectra of radiative neutron capture and uncertainty calculations

Dr Tamas Belgya (Institute for Energy Security and Environmental Safety, Centre for Energy Research, Budapest, Hungary)

Reliable uncertainty estimation of both the unfolded experimental data and of the theoretical model is utmost to obtain adequate Chi-square estimation when fitting model parameters to the experimental gamma-ray spectra. To do that, preparation steps of experimental spectra had already been presented in Ref. [1] with complete uncertainty estimation. The obtained unfolded spectrum can then be...

445. (WITHDRAWN) Neutron production cross section measurements with FOOT

Cristian Massimi (INFN and University of Bologna)

The FOOT (FragmentatiOn Of Target) collaboration aims at improving the accuracy of treatment planning in hadron therapy by studying the behavior of the used particle beams. Typical beams of protons or carbon ions can interact with the nuclei constituting the human body, thus leading to nuclear fragmentation with significative neutron productions. While nuclear fragments are an important source...

472. (WITHDRAWN) Neutron spectrometry for medical and industrial accelerators

Clement Corneille (Université de Strasbourg)

Neutron is one of the most produced secondary particle by medical and industrial accelerators, but it remains difficult to detect due to its neutral charge. Neutrons also require a particular attention in radiation protection due to their long range and their high relative biological effectiveness (RBE) [1]. For instance, in hadron therapy, ion beams can generate multiple neutrons both in the...

426. (WITHDRAWN) Probing the X17 existence and properties using proton and neutron beams

Carlo Gustavino

Two striking anomalies have been observed recently in the emission of electron-positron pairs in $^7Li(p,e^+e^-)^8Be$ and $^3H(p,e^+e^-)^4He$ reactions [1-3]. These anomalies have been interpreted as the signature of a new particle, a boson with a mass of 17 MeV (hereafter X17 boson), not foreseen in the particle physics standard model. It has been speculated that the X17 boson could be a...

469. (WITHDRAWN) The Myths of Physicists

Dr Richard Firestone (Lawrence Berkeley National Laboratory)

The analysis of level densities and photon strengths has been bedeviled by misconceptions and physics errors that have persisted for over 50 years. In this talk I will discuss deficiencies in the Constant Temperature (CT) level density model as described by Gilbert and Cameron. This model describes the “total” level density using a nonphysical back shift parameter. I will show that every...

468. Transmission coefficients in neutron-induced reactions modeled in a new quantum approach

Prof. Cristiana Oprea (JINR)

Transmission coefficients were evaluated applying a quantum-mechanical approach starting from the reflection factor. Reflection factor is a complex function depending on logarithmic derivative, ingoing and outgoing wave functions (as solutions of Schrodinger equation), and parameter of nuclear potentials. Transmission coefficients, for charged and neutral particles, were calculated considering...