Nuclear and nuclear astrophysical interest in D(n, γ)3H reaction

被引：2
|
作者：
Nagai, Y
Kobayashi, T
Kikuchi, T
Okazaki, F
Takaoka, K
Naito, S
Tomyo, A
Shima, T
Igashira, M
Ishikawa, S
机构：
[1] Tokyo Inst Technol, Dept Appl Phys, Meguro Ku, Tokyo 152, Japan
[2] Tokyo Inst Technol, Nucl Reactors Res Lab, Meguro Ku, Tokyo 152, Japan
[3] Hosei Univ, Dept Phys, Chiyoda Ku, Tokyo 102, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1998年 / 402卷 / 2-3期
关键词：
nuclear reactions involving few-nucleon systems; radiative capture; big bang nucleosynthesis;
D O I：
10.1016/S0168-9002(97)00881-4
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A neutron capture cross section of deuterium was measured for the first time at the neutron energies between 10 and 80 keV by detecting the prompt gamma-ray from the capture state to the ground state of triton. The cross section is important to study the nuclear dynamics of the few nucleon systems, and to estimate the elemental abundances in the primordial nucleosynthesis. In order to pick up the small gamma-ray signal from huge background we have developed highly sensitive NaI(T1) detector systems with good signal to noise ratio. Use of these detectors together with pulsed neutron beams enabled us to determine the small capture cross section accurately. The cross sections were obtained as 2.12 (35) and 2.04 (3) mu barns at 30.5 and 54.2 keV, respectively, and they are compared with the theoretical ones.
引用
收藏
页码：408 / 411
页数：4
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