On subthreshold ionization of helium droplets, ejection of He(+), and the role of anions.
On subthreshold ionization of helium droplets, ejection of He(+), and the role of anions.
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关于氦液滴的亚阈值电离、He( ) 的喷射以及阴离子的作用
DOI:
10.1039/c4cp03236e
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
O. Echt
中科院分区:
文献类型:
--
作者:
M. Renzler;M. Daxner;N. Weinberger;S. Denifl;P. Scheier;O. Echt
The mechanism of ionization of helium droplets has been investigated in numerous reports but one observation has not found a satisfactory explanation: How are He+ ions formed and ejected from undoped droplets at electron energies below the ionization threshold of the free atom? Does this path exist at all? A measurement of the ion yields of He+ and He2+ as a function of electron energy, electron emission current, and droplet size reveals that metastable He*− anions play a crucial role in the formation of free He+ at subthreshold energies. The proposed model is testable.
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DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
1996
期刊:
影响因子:
--
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