摘要
Channeling phenomena of He,Ne,Ar and Kr ions at energy(200–5000 eV)in single-wall carbon nanotubes(SWCNTs)are investigated by molecular dynamics simulation with analytical potentials.The critical angles for the particles to be channeled in an SWCNT are analyzed.In the incident energy range of 200–5000 eV,it is found that the ion energy dependence of the critical angle obeys an improved Lindhard equation which is closely related to the ratio of nuclear charge number to atomic mass Z/M.The critical angle for different types of ions channeling in SWCNTs is determined by both the atomic nuclear charge and mass.
作者
李勇
郑里平
张伟
许子健
任翠兰
怀平
朱志远
LI Yong;ZHENG Li-Ping;ZHANG Wei;XU Zi-Jian;REN Cui-Lan;HUAI Ping;ZHU Zhi-Yuan(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,PO Box 800-204,Shanghai 201800;Graduate University of the Chinese Academy of Sciences,Beijing 100049)
基金
by the Key Project of the Knowledge Innovation Program of Chinese Academy of Sciences(KJCX3-SYW-N10)
the Hundred Talents Program of Chinese Academy of Sciences,the National Natural Science Foundation of China(10874197)
the Scientific Research Starting Foundation of the Ministry of Human Resources and Social Security of China for Returned Overseas Chinese Scholars
the Shanghai Municipal Science and Technology Commission(09ZR1438300,11ZR1445200).