Chemical reaction of surface state electrons on liquid helium with atomic hydrogen

T Arai; T Shiino; K Kono

doi:10.1016/S1386-9477(99)00225-8

Chemical reaction of surface state electrons on liquid helium with atomic hydrogen

T Arai^*, T Shiino, K Kono

^*Corresponding author for this work

International College of Semiconductor Technology

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Chemical reaction in a two-dimensional mixture of electrons and atomic hydrogen (II) on the surface of superfluid He-4 was observed. By monitoring the conductivity of surface state electrons with Corbino electrode, small amount of H atoms were introduced. Hydrogen destroyed the conductivity signal and we believe it is because of electron capture reaction, H + e(-) --> H-. The reaction rates increased as the temperature decreased and it saturated below 200 mK. This temperature dependence agrees with our analysis which assumes that the chemical process takes place only in the surface state. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	880-883
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	6
Issue number	1-4
DOIs	https://doi.org/10.1016/S1386-9477(99)00225-8
State	Published - Feb 2000

Keywords

surface sate electrons
atomic hydrogen
superfluid helium
electron capture reaction
negative hydrogen
WIGNER

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10.1016/S1386-9477(99)00225-8

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title = "Chemical reaction of surface state electrons on liquid helium with atomic hydrogen",

abstract = "Chemical reaction in a two-dimensional mixture of electrons and atomic hydrogen (II) on the surface of superfluid He-4 was observed. By monitoring the conductivity of surface state electrons with Corbino electrode, small amount of H atoms were introduced. Hydrogen destroyed the conductivity signal and we believe it is because of electron capture reaction, H + e(-) --> H-. The reaction rates increased as the temperature decreased and it saturated below 200 mK. This temperature dependence agrees with our analysis which assumes that the chemical process takes place only in the surface state. (C) 2000 Published by Elsevier Science B.V. All rights reserved.",

keywords = "surface sate electrons, atomic hydrogen, superfluid helium, electron capture reaction, negative hydrogen, WIGNER",

author = "T Arai and T Shiino and K Kono",

year = "2000",

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doi = "10.1016/S1386-9477(99)00225-8",

language = "English",

volume = "6",

pages = "880--883",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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TY - JOUR

T1 - Chemical reaction of surface state electrons on liquid helium with atomic hydrogen

AU - Arai, T

AU - Shiino, T

AU - Kono, K

PY - 2000/2

Y1 - 2000/2

N2 - Chemical reaction in a two-dimensional mixture of electrons and atomic hydrogen (II) on the surface of superfluid He-4 was observed. By monitoring the conductivity of surface state electrons with Corbino electrode, small amount of H atoms were introduced. Hydrogen destroyed the conductivity signal and we believe it is because of electron capture reaction, H + e(-) --> H-. The reaction rates increased as the temperature decreased and it saturated below 200 mK. This temperature dependence agrees with our analysis which assumes that the chemical process takes place only in the surface state. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

AB - Chemical reaction in a two-dimensional mixture of electrons and atomic hydrogen (II) on the surface of superfluid He-4 was observed. By monitoring the conductivity of surface state electrons with Corbino electrode, small amount of H atoms were introduced. Hydrogen destroyed the conductivity signal and we believe it is because of electron capture reaction, H + e(-) --> H-. The reaction rates increased as the temperature decreased and it saturated below 200 mK. This temperature dependence agrees with our analysis which assumes that the chemical process takes place only in the surface state. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

KW - surface sate electrons

KW - atomic hydrogen

KW - superfluid helium

KW - electron capture reaction

KW - negative hydrogen

KW - WIGNER

U2 - 10.1016/S1386-9477(99)00225-8

DO - 10.1016/S1386-9477(99)00225-8

M3 - Article

SN - 1386-9477

VL - 6

SP - 880

EP - 883

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-4

ER -

Chemical reaction of surface state electrons on liquid helium with atomic hydrogen

Abstract

Keywords

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