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Experimental study on neutron production cross section at 180o in the intermediate energy region

中能区180°中子产生截面实验研究

基本信息

批准号：
20760597
负责人：
IWAMOTO Yosuke
金额：
$ 2.5万
依托单位：
Japan Atomic Energy Agency
依托单位国家：
日本
项目类别：
Grant-in-Aid for Young Scientists (B)
财政年份：
2008
资助国家：
日本
起止时间：
2008 至 2010
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760597/
关键词：
180度中性子生成断面積中間エネルギー核温度運動源模型

项目摘要

The neutron energy spectra of carbon, iron, and gold targets with 140 MeV protons at 180° were measured at the RCNP cyclotron facility using the time-of-flight technique. Experimental neutron energy spectra at 180° were composed of two evaporation Maxwellian-type components (in two neutron energy regions of 1-4 MeV and 4-10 MeV) and a pre-equilibrium (in the neutron energy region above 10 MeV) Maxwellian-type component. All experimental spectra were fitted well by the sum of three Maxwellian-type equations across the entire energy region of the neutrons.

在RCNP回旋加速器装置上用飞行时间技术测量了140 MeV质子在180°角下的碳、铁和金靶的中子能谱。180°实验中子能谱由两个蒸发麦克斯韦型分量（1-4 MeV和4-10 MeV两个中子能区）和一个预平衡麦克斯韦型分量（10 MeV以上中子能区）组成。所有实验光谱都很好地拟合了整个中子能量区域的三个麦克斯韦型方程之和。