强流脉冲质子束轰击<sup>19</sup>F靶产生6—7MeV准单能脉冲γ射线初步实验研究

杨海亮; 邱爱慈; 孙剑锋; 何小平; 张嘉生; 汤俊萍; 王海洋; 许日; 彭建昌; 任书庆; 李鹏; 杨莉; 黄建军; 张国光; 欧阳晓平

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强流脉冲质子束轰击¹⁹F靶产生6—7MeV准单能脉冲γ射线初步实验研究

更新时间：2021-03-12

- 强流脉冲质子束轰击¹⁹F靶产生6—7MeV准单能脉冲γ射线初步实验研究
- Preliminary experimental researches on 6—7 MeV quasi-monoenergetic pulsed γ-rays generation via intense pulsed proton beam striking ¹⁹F target
- 核技术 2004年第3期
- 作者机构：
  
  1. 西北核技术研究所
  2. 西北核技术研究所,西安,710024
- 作者简介：
- 基金信息：
  
  (No.ZX069)
- DOI：
  中图分类号： O572.2
- 纸质出版日期：2004-03-01
- 稿件说明：
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[1]杨海亮,邱爱慈,孙剑锋,何小平,张嘉生,汤俊萍,王海洋,许日,彭建昌,任书庆,李鹏,杨莉,黄建军,张国光,欧阳晓平.强流脉冲质子束轰击~(19)F靶产生6—7MeV准单能脉冲γ射线初步实验研究[J].核技术,2004(03):188-192.

YANG Hailiang QIU Aici SUN Jianfeng HE Xiaoping ZHANG Jiasheng TANG Junping WANG Haiyang XU Ri PENG Jianchang REN Shuqing LI Peng ZHANG Guoguang YANG Li HUANG Jianjun OUYANG Xiaoping. Preliminary experimental researches on 6—7 MeV quasi-monoenergetic pulsed γ-rays generation via intense pulsed proton beam striking ¹⁹F target[J]. Nuclear techniques, 2004, (3): 188-192.
[1]杨海亮,邱爱慈,孙剑锋,何小平,张嘉生,汤俊萍,王海洋,许日,彭建昌,任书庆,李鹏,杨莉,黄建军,张国光,欧阳晓平.强流脉冲质子束轰击~(19)F靶产生6—7MeV准单能脉冲γ射线初步实验研究[J].核技术,2004(03):188-192. DOI：

YANG Hailiang QIU Aici SUN Jianfeng HE Xiaoping ZHANG Jiasheng TANG Junping WANG Haiyang XU Ri PENG Jianchang REN Shuqing LI Peng ZHANG Guoguang YANG Li HUANG Jianjun OUYANG Xiaoping. Preliminary experimental researches on 6—7 MeV quasi-monoenergetic pulsed γ-rays generation via intense pulsed proton beam striking ¹⁹F target[J]. Nuclear techniques, 2004, (3): 188-192. DOI：

摘要

给出了利用PIN半导体探测器和ST401塑料闪烁体配合光电倍增管测量的强流脉冲质子束轰击含F19核素的靶产生的6—7MeV准单能脉冲γ射线的初步实验结果。理论上计算了质子束轰击C2F4靶产生的准单能脉冲γ射线产额和核反应截面随入射质子能量的变化曲线

提出了采用质子束传输法分离和降低轫致辐射干扰的方法

利用ST401配合光电倍增管和PIN半导体探测器测量了质子传输不同距离后轰击C2F4靶产生的6—7MeV准单能脉冲γ射线谱以及相对于轫致辐射的时间延迟数据

并根据飞行时间确定了束流峰值时刻的质子能量

还通过实验验证了Cu、Cr和不锈钢靶及其中所含的杂质不能产生明显的其它能量的γ射线干扰。

Abstract

The 6—7 MeV quasi-monoenergetic pulsed γ -rays were produced on the FLASH Ⅱ accelerator. The pulsed γ -rays were generated via intense pulsed high power proton beam striking F target and measured with the 19 PIN semiconductor detectors and ST401 plastic scintillators. The yield of the quasi-monoenergetic pulsed γ photons from the 19F ( p

αγ ) 16 Ο reaction was calculated. By placing the target far enough downstream so that the time-of-flight was greater than the duration of the diode bremsstrahlung pulse

the quasi-monoenergetic pulsed γ -rays were discriminated from the diode bremsstrahlung

and the bremsstrahlung was depressed due to extending the distance between detector and diode. The quasi-monoenergetic pulsed γ -rays and their time delay were measured with ST401 plastic scintillator photomultiplier and the PIN semiconductor detector at various transmission distances. The proton energy at the beam current peak time was calculated by time-of-flight method. It is demonstrated by a series of experiments that the Cu

stainless steel target and the impurity in the target would not produce γ -ray interferences with other energies.

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强流脉冲质子束轰击19F靶产生6—7MeV准单能脉冲γ射线初步实验研究

Preliminary experimental researches on 6—7 MeV quasi-monoenergetic pulsed γ-rays generation via intense pulsed proton beam striking 19F target

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Abstract

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references

强流脉冲质子束轰击¹⁹F靶产生6—7MeV准单能脉冲γ射线初步实验研究

Preliminary experimental researches on 6—7 MeV quasi-monoenergetic pulsed γ-rays generation via intense pulsed proton beam striking ¹⁹F target