Electron attachment reaction rates in 2D atomic hydrogen-electron mixed system on liquid helium surface

Toshikazu Arai, Tomoyuki Mitsui, Hideki Yayama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have measured the temperature dependence of the electron attachment reaction rate of atomic hydrogen (H) on a liquid 4He surface in applied magnetic fields of 0-5 T at 0.2-0.6 K. The measured surface state electron (SSE) losses are faster at lower temperatures for a given magnetic field. This behavior can be qualitatively understood, since the surface coverage of adsorbed H is large at low temperature and the collisions between H and SSE are frequent. However, the reaction is faster than expected based on the collision frequency argument. The measured reaction rate coefficient K e is strongly temperature dependent. We observe that, as the temperature is lowered, Ke increases by several orders of magnitude. This indicates that some additional effect enhances electron attachment at low temperature. We discuss a possible reaction mechanism between H and SSE.

Original languageEnglish
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages83-84
Number of pages2
DOIs
Publication statusPublished - Dec 1 2006
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: Aug 10 2006Oct 17 2006

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period8/10/0610/17/06

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Arai, T., Mitsui, T., & Yayama, H. (2006). Electron attachment reaction rates in 2D atomic hydrogen-electron mixed system on liquid helium surface. In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 83-84). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2354615