Neutron emission spectrum from gold excited with 16.6 MeV linearly polarized monoenergetic photons
Neutron emission spectrum from gold excited with 16.6 MeV linearly polarized monoenergetic photons
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16.6 MeV 线性偏振单能光子激发金的中子发射光谱
DOI：
10.1080/00223131.2019.1691073
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发表时间：
2020
影响因子：
1.2
通讯作者：
Y. Asano
中科院分区：
文献类型：
--
作者：
Y. Kirihara;H. Nakashima;T. Sanami;Y. Namito;T. Itoga;S. Miyamoto;A. Takemoto;M. Yamaguchi;Y. Asano
摘要 使用 NewSUBARU-BL01 上的飞行时间方法测量了由 16.6 ±0.2 MeV 单能线偏振光子束激发的 197Au 靶的中子发射光谱。在光核反应产生的中子谱中清楚地检测到两种成分。一种成分[成分 (A)] 显示出类似蒸发的光谱，能量高达 4 MeV。另一种成分[成分(B)]的光谱形状像凸块，能量≥4 MeV。成分（A）的强度不表现出任何明确的角度依赖性，而成分（B）的强度遵循关系[a+b cos(2θ)]，作为偏振和检测器方向之间的角度θ的函数。
ABSTRACT The neutron-emission spectrum from a 197Au target excited with a 16.6 ±0.2 MeV, monoenergetic, linearly polarized photon beam was measured using the time-of-flight method at the NewSUBARU-BL01. Two components were clearly detected in the neutron spectrum produced by photonuclear reactions. One component [component (A)] shows an evaporation-like spectrum with energies up to 4 MeV. The spectrum of the other component [component (B)] is shaped like a bump and energies ≥4 MeV. The intensity of the component (A) does not show any definite angular dependence, whereas, that of the component (B) follows the relation [a+ b cos(2Θ)] as a function of the angle Θ between the polarization and detector directions.
影响因子：
1.2
作者：
Sato, Tatsuhiko;Niita, Koji;Sihver, Lembit
通讯作者：
Sihver, Lembit