期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 115, 期 25, 页码 6820-6824出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp110475q
关键词
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资金
- EIPAM Network (European Science Foundation)
- Danish Research Council (FNU)
- Marie Curie Intra-European Fellowship [009786]
- Lundbeck Foundation
Experiments are reported which show that currents of low energy (cold) electrons pass unattenuated through crystalline ice at 135 K for energies between zero and 650 meV, up to the maximum studied film thickness of 430 bilayers, indicating negligible apparent trapping. By contrast, both porous amorphous ice and compact crystalline ice at 40 K show efficient electron trapping. Ice at intermediate temperatures reveals metastable trapping that decays within a few hundred seconds at 110 K. Our results are the first to demonstrate full transmission of cold electrons in high temperature water ice and the phenomenon of temperature-dependent trapping.
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