Study of inter atomic screened coulomb potential between deuterium and heavy atom collision by P/T yield ratio emitted from low energy D-D reaction

LIU Dongdong; WANG Zhenghai; ZHOU Yushan; FANG Kaihong; WANG Tieshan

doi:10.11889/j.0253-3219.2014.hjs.37.100518

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Study of inter atomic screened coulomb potential between deuterium and heavy atom collision by P/T yield ratio emitted from low energy D-D reaction

更新时间：2021-03-03

- Study of inter atomic screened coulomb potential between deuterium and heavy atom collision by P/T yield ratio emitted from low energy D-D reaction
- NUCLEAR TECHNIQUES Vol. 37, Issue 10, Article number: 100518(2014)
- 作者机构：
  
  兰州大学核科学与技术学院,兰州,730000
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.100518
  CLC：
- Published：16 October 2014
- 稿件说明：
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LIU Dongdong, WANG Zhenghai, ZHOU Yushan, et al. Study of inter atomic screened coulomb potential between deuterium and heavy atom collision by P/T yield ratio emitted from low energy D-D reaction[J]. Nuclear techniques, 2014, 37(10): 100518
DOI：

LIU Dongdong, WANG Zhenghai, ZHOU Yushan, et al. Study of inter atomic screened coulomb potential between deuterium and heavy atom collision by P/T yield ratio emitted from low energy D-D reaction[J]. Nuclear techniques, 2014, 37(10): 100518 DOI： 10.11889/j.0253-3219.2014.hjs.37.100518.

摘要

金属材料中D-D核反应出射质子/氚产额的比值(P/T值)与出射粒子探测方向和材料中氘离子运动方向之间的夹角（探测角）相关。实际过程中，氘离子在载体材料中的多次散射将改变探测角，从而影响P/T值。因此，P/T值将反映氘离子-材料原子间的相互作用势。本工作利用10?20 keV能区氘束轰击不同材料形成自吸收靶，并测量了不同靶材料下核反应的P/T值。同时，利用自主开发的蒙特卡罗程序模拟不同能量、不同散射势下D-D核反应的P/T值。结果表明：在普适势模型下，模拟值较实验值偏大；P/T值具有原子序数(Z)相关性。

Abstract

Background: The yield ratio (P/T value) of proton to tritium from D-D nuclear reaction in solid is related to detection angle between direction of emitted particles and that of D ions in solid. Actually

the detection angle is changed by the multiple scattering of D ions with target atom. The P/T value is changed consequently. Purpose: The potential between D ion and target atoms could be derived from this yield ratio P/T in low energy region. Methods: The deuterated targets were obtained by bombarding metal foils with 10?20 keV D+ beam. Then

P/T values were measured in different targets at different energies. Simultaneously

a Monte Carlo computer program was used to simulate the P/T values with different multiple scattering potentials. Results: The simulated P/T values with the universal potential are systematically larger than the experimental results; P/T value is related to the target atomic number (Z). Conclusion: P/T value could be a probe to study inter atomic potential in metal targets. Abstract

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LIU Dongdong

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