CENDL-3.2: The new version of Chinese general purpose evaluated nuclear data library

TLDR

The CENDL‑3.2 library aims to supply high‑quality nuclear data for modern nuclear science and engineering. CENDL‑3.2 covers 272 nuclides, including 134 new or updated evaluations from 10⁻⁵ eV to 20 MeV, adds model‑dependent covariance data for 70 fission‑product nuclides, and has been benchmarked against ENDITS‑1.0 criticality and shielding tests. CENDL‑3.2 has been completed, featuring revised and improved data for key nuclides such as U, Pu, Th, and Fe, and incorporates advanced evaluation techniques to ensure high‑quality nuclear data.

Abstract

A new version of Chinese Evaluated Nuclear Data Library, namely CENDL-3.2, has been completed under the joint efforts of CENDL working group. This library is constructed with the general purpose to provide high-quality nuclear data for the modern nuclear science and engineering. 272 nuclides from light to heavy are covered in CENDL-3.2 in total and the data for 134 nuclides are new or updated evaluations in energy region of 10 -5 eV-20 MeV. The data of most of the key nuclides in nuclear application like U, Pu, Th, Fe et al. have been revised and improved, and various evaluation techniques have been developed to produce the nuclear data with good quality. Moreover, model dependent covariances data for main reaction cross sections are added for 70 fission product nuclides. To assess the accuracy of CENDL-3.2 in application, the data have been tested with the criticality and shielding benchmarks collected in ENDITS-1.0.