TY - JOUR
T1 - Separation of potential and kinetic electron emission from Si and W induced by multiply charged neon and argon ions
AU - Wang, Yuyu
AU - Zhao, Yongtao
AU - Qayyum, A.
AU - Xiao, Guoqing
PY - 2007/12
Y1 - 2007/12
N2 - The total secondary electron emission yields, γT, induced by impact of the fast ions Neq+ (q = 2-8) and Arq+ (q = 3-12) on Si and Neq+ (q = 2-8) on W targets have been measured. It was observed that for a given impact energy, γT increases with the charge of projectile ion. By plotting γT as a function of the total potential energy of the respective ion, true kinetic and potential electron yields have been obtained. Potential electron yield was proportional to the total potential energy of the projectile ion. However, decrease in potential electron yield with increasing kinetic energy of Neq+ impact on Si and W was observed. This decrease in potential electron yield with kinetic energy of the ion was more pronounced for the projectile ions having higher charge states. Moreover, kinetic electron yield to energy-loss ratio for various ion-target combinations was calculated and results were in good agreement with semi-empirical model for kinetic electron emission.
AB - The total secondary electron emission yields, γT, induced by impact of the fast ions Neq+ (q = 2-8) and Arq+ (q = 3-12) on Si and Neq+ (q = 2-8) on W targets have been measured. It was observed that for a given impact energy, γT increases with the charge of projectile ion. By plotting γT as a function of the total potential energy of the respective ion, true kinetic and potential electron yields have been obtained. Potential electron yield was proportional to the total potential energy of the projectile ion. However, decrease in potential electron yield with increasing kinetic energy of Neq+ impact on Si and W was observed. This decrease in potential electron yield with kinetic energy of the ion was more pronounced for the projectile ions having higher charge states. Moreover, kinetic electron yield to energy-loss ratio for various ion-target combinations was calculated and results were in good agreement with semi-empirical model for kinetic electron emission.
KW - Electron emission
KW - Highly charged ions
UR - https://www.scopus.com/pages/publications/36448959042
U2 - 10.1016/j.nimb.2007.09.047
DO - 10.1016/j.nimb.2007.09.047
M3 - 文章
AN - SCOPUS:36448959042
SN - 0168-583X
VL - 265
SP - 474
EP - 478
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 2
ER -