Target depth dependence of damage rate in metals by 150 MeV proton irradiation

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:342

Article

Yoshiie, T.¹  Ishi, Y.¹  Kuriyama, Y.¹  Mori, Y.¹  Sato, K.¹  Uesugi, T.¹  Xu, Q.¹ 

[1] Kyoto Univ, Inst Res Reactor, Sennan, Osaka 5900494, Japan

关键词: Proton irradiation;    Target thickness dependence of damage rate;    Ni;    Electrical resistance measurement;    Positron annihilation lifetime measurement;   

DOI  :  10.1016/j.nimb.2014.09.037

来源: Elsevier

【 摘 要 】

A series of irradiation experiments with 150 MeV protons was performed. The relationship between target depth (or shield thickness) and displacement damage during proton irradiation was obtained by in situ electrical resistance measurements at 20 K. Positron annihilation lifetime measurements were also performed at room temperature after irradiation, as a function of the target thickness. The displacement damage was found to be high close to the beam incident surface area, and decreased with increasing target depth. The experimental results were compared with damage production calculated with an advanced Monte Carlo particle transport code system (PHITS). (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free