单能60 keV碳离子撞击产生的光子、电子和二次离子发射
Photon, Electron and Secondary Ion Emission from Single C(60) keV Impacts.
作者信息
Fernandez-Lima F A, Eller M J, Verkhoturov S V, Della-Negra S, Schweikert E A
机构信息
Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, Texas 77842-3012.
出版信息
J Phys Chem Lett. 2010 Dec 16;1(24):3510-3513. doi: 10.1021/jz1014345.
Abstract
This paper presents the first observation of coincidental emission of photons, electrons and secondary ions from individual C(60) keV impacts. An increase in photon, electron and secondary ion yields is observed as a function of C(60) projectile energy. The effect of target structure/composition on photon and electron emissions at the nanometer level is shown for a CsI target. The time-resolved photon emission may be characterized by a fast component emission in the UV-Vis range with a short decay time, while the electron and secondary ion emission follow a Poisson distribution.
摘要
本文首次观测到了单个C(60)千电子伏特撞击时光子、电子和二次离子的同时发射。观测到光子、电子和二次离子产额随C(60)入射粒子能量的增加而增加。对于碘化铯靶，展示了靶结构/成分在纳米尺度上对光子和电子发射的影响。时间分辨的光子发射可能以紫外-可见光范围内具有短衰减时间的快速成分发射为特征，而电子和二次离子发射遵循泊松分布。
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