TY - GEN
T1 - Electron attachment reaction rates in 2D atomic hydrogen-electron mixed system on liquid helium surface
AU - Arai, Toshikazu
AU - Mitsui, Tomoyuki
AU - Yayama, Hideki
PY - 2006/12/1
Y1 - 2006/12/1
N2 - 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.
AB - 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.
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U2 - 10.1063/1.2354615
DO - 10.1063/1.2354615
M3 - Conference contribution
AN - SCOPUS:33947498652
SN - 0735403473
SN - 9780735403475
T3 - AIP Conference Proceedings
SP - 83
EP - 84
BT - LOW TEMPERATURE PHYSICS
T2 - LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Y2 - 10 August 2006 through 17 October 2006
ER -