12C(n,n + 3α) and 12C(n,α0)9Be cross sections in the MeV neutron energy region

Jie Liu; Zengqi Cui; Yiwei Hu; Haofan Bai; Zhenpeng Chen; Cong Xia; Tieshuan Fan; Jinxiang Chen; Guohui Zhang; Xichao Ruan; Hanxiong Huang; Jie Ren; Hongtao Chen

Physics Letters B (Jul 2023)

12C(n,n + 3α) and 12C(n,α0)9Be cross sections in the MeV neutron energy region

Jie Liu,
Zengqi Cui,
Yiwei Hu,
Haofan Bai,
Zhenpeng Chen,
Cong Xia,
Tieshuan Fan,
Jinxiang Chen,
Guohui Zhang,
Xichao Ruan,
Hanxiong Huang,
Jie Ren,
Hongtao Chen

Affiliations

Jie Liu: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China
Zengqi Cui: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China; China Institute of Nuclear Industry Strategy (CINIS), Beijing, 100048, China
Yiwei Hu: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China
Haofan Bai: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China
Zhenpeng Chen: Department of physics, Tsinghua University, Beijing, 100084, China
Cong Xia: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China
Tieshuan Fan: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China
Jinxiang Chen: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China
Guohui Zhang: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, 100871, China; Corresponding author.
Xichao Ruan: Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413, China
Hanxiong Huang: Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413, China
Jie Ren: Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413, China
Hongtao Chen: China Institute of Atomic Energy, Beijing, 102413, China

Journal volume & issue: Vol. 842
p. 137985

Abstract

Read online

Cross sections of the 12C(n, n+3α) reaction are of great significance in understanding the nuclear reaction mechanism and in the applications of nuclear technology. However, large differences (≈ 200%) exist in the 12C(n, n+3α) cross section data of measurements and evaluations. Using a single crystal chemical vapor deposited (sCVD) diamond detector as an active target, cross sections of the 12C(n, n+3α) and 12C(n, α0)9Be reactions were measured simultaneously in the neutron energy region of 9.50 – 14.67 MeV. The present cross sections of the 12C(n,α0)9Be reaction are consistent with the results of the latest measurement, which confirms the reliability of this work. The measurement results of the 12C(n, n+3α) reaction with uncertainties smaller than 15% contribute to effectively clarify the discrepancies of the measurements and evaluations. To our knowledge, this is the first time to measure the 12C(n, n+3α) cross sections using the diamond detector as an active target. Our method can be used in the future measurements to constrain the 12C(n, n+3α) excitation function in a much wider neutron energy region. R-matrix analysis was carried out for n+12C system using the RAC code in the neutron energy region below 30 MeV. Systematic and reliable calculation results are obtained for various reaction channels.

Published in Physics Letters B

ISSN: 0370-2693 (Print); 1873-2445 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/physics-letters-b/

About the journal

Abstract

Keywords