Synergistic Effect of Triple Ion Beams on Radiation Damage in CLAM Steel
YUAN Da-Qing1, ZHENG Yong-Nan1, ZUO Yi1, FAN Ping1, ZHOU Dong-Mei1, ZHANG Qiao-Li1, MA Xiao-Qiang1, CUI Bao-Qun1, CHEN Li-Hua1, JIANG Wei-Sheng1, WU Yi-Can2, HUANG Qun-Ying2, PENG Lei2, CAO Xing-Zhong3, WANG Bao-Yi3, WEI Long3, ZHU Sheng-Yun1**
1China Institute of Atomic Energy, Beijing 102413 2Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei 230031 3Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Abstract：The synergistic effect of triple ion beams is investigated by simultaneous and sequential irradiations of gold, hydrogen and helium ions on the low activation martensitic steel (CLAM) developed in China. The depth profile measurements of the positron annihilation Doppler broadening S parameter are carried out as a function of slow-positron beam energy to examine the produced radiation damage. The synergistic effect of displacement damage and hydrogen and helium on the formation of radiation damage is clearly observed. In the preset case ,this effect suppresses the radiation damage in the CLAM steel due to the helium and/or hydrogen filling of vacancy clusters.
2014, Vol. 31 
