Speaker
Description
N. Jovancevic$^1$, D. Knezevic$^2$, A.M. Sukhovoj$^3$, L.V. Mitsyna$^3$ M. Krmar$^1$,
$^1$) Department of Physics, Faculty of Science, University of Novi Sad, Serbia \
nikola.jovancevic@df.uns.ac.rs\
$^2$) Institute of Physics Belgrade, University of Belgrade, Belgrade, Serbia\
$^3$)Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russian Federation\
Determination of the accurate values for gamma transitions, level scheme, nuclear level density and radiative strength function are one of the most important tasks in nuclear physics below the giant electric dipole resonance region. Accurate experimental values of those parameters are very important for the analysis of astrophysical reactions, production rare isotope beams for fundamental research, reactor technology, etc. One of the most suitable techniques for the determination of the nuclear matter parameters is the two-step gamma cascades method [1,2,3]. It is based on the measurements of gamma coincidences following neutron capture. This technique enables the reconstruction of the gamma transitions and level scheme of the atomic nucleus as well as to determinate level density and the radiative gamma strength function by fitting the detected intensities of two-steps gamma cascades by the predicted models, or by using iterative procedures [4,5,6]. Here,we present the results obtained for 43 nuclei in mass region of $28 \leq A \leq 200$. Obtained data are necessary for better understanding of nuclear structure and development of reactor technology.
[1] Boneva, S., Khitrov, V., Sukhovoj, A., Vojnov, A. Nucl. Phys. A 589, 293 (1995).
[2] Vasilieva, E. V., Sukhovoj, A. M., Khitrov, V. A. Phys. of Atomic Nuclei 64, 153 (2001).
[3] D. C. Vu et al., Phys. Atom. Nucl. 80, 237 (2017).
[4] N. Jovancevic et al., Journal of the Korean Physical Society, Vol. 75, No. 2, July 2019, pp. 100∼116.
[5] Knezevic, D., et al., (2019), NPA, 992, 121628.
[6] Knezevic, D., et al.,Nuclear Physics A, Volume 993, January 2020, 121645