Desorption kinetics of Li-atom delayed emission from LiF under low-energy-electron bombardment.
Desorption kinetics of Li-atom delayed emission from LiF under low-energy-electron bombardment.
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低能电子轰击下 LiF 中锂原子延迟发射的解吸动力学。
DOI：
10.1103/physrevb.46.83
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
Betz
中科院分区：
文献类型：
--
作者：
Seifert;Liu;Albridge;Barnes;Tolk;Husinsky;Betz
在350~440℃温度范围内，用四极杆质谱仪研究了锂原子在LiF晶体中的电子激发脱附。在电子轰击的过程中，观察到锂原子发射的延迟最大值。在之前的一篇文章中，这一令人惊讶的结果被解释为大团簇(胶体)的均匀成核。F中心的扩散被忽略，因为扩散时间被认为比胶体的寿命短得多
Electron-stimulated desorption of lithium atoms from LiF crystals has been investigated with quadrupole mass spectroscopy at temperatures in the range 350 to 440 o C. Following thecessation of electron bombardment, a delayed maximum in the emission of lithium atoms is observed. In a previous publication, this surprising result was explained in terms of a homogeneous nucleationof large clusters (colloids). The diffusion of F centers was neglected, because the diffusion time was considered to be much shorter than the lifetime of the colloids