Speaker
Description
JENDL-5 contains several sub-libraries to contribute to various applications. This presentation outlines the deuteron and alpha ones.
Nuclear data on neutron-production reactions induced by deuteron are required in the fields of design of accelerator-based neutron sources. In such facilities, ($d,xn$) reactions on Li, Be, or C are employed to generate neutron beams. We have recently developed JENDL/DEU-2020[1], which is the deuteron nuclear library for $^{6,7}$Li, $^{9}$Be, and $^{12,13}$C up to 200 MeV. In the deuteron sub-library of JENDL-5, the data of JENDL/DEU-2020 are partially revised. In addition to that, the data on accelerator structural materials such as $^{93}$Nb and $^{63,65}$Cu are newly evaluated.
As for nuclear data on neutron-production reactions induced by alpha particle, they are important in the fields of nuclear backend. Alpha particles emitted from the decay of actinide nuclides in spent nuclear fuel can induce ($\alpha,xn$) reaction on surrounding light nuclides such as oxygen. Information on not only the amounts but also energy spectra of the emitted neutrons is important for the evaluation of safe transportation, storage, and reprocessing. In the alpha sub-library of JENDL-5, we revise the outgoing neutron energy and angular distribution data and form for some of the 17 nuclides from $^{6}$Li to $^{30}$Si in JENDL/AN-2005[2]. This revision is partially based on the founding in Ref. [3]. Moreover, the data of elastic scattering and those of the alpha particle and gamma ray spectra emitted together with the neutron emission channel have been added for each target nuclide.
An overview of the evaluation and validation of the above two sub-libraries will be provided.
This work was partially supported by JSPS KAKENHI Grant Number 19K15483.
[1] S. Nakayama et al., J. Nucl. Sci. Technol. 58, 805 (2021).
[2] T. Murata et al., JAEA-Research 2006-052 (2006).
[3] D.P. Griesheimer et al., Nucl. Eng. Technol. 49, 1199 (2017).