Spin-polarization effect on electron attachment to atomic hydrogen on liquid helium surface

T. Arai, T. Mitsui, H. Yayama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Reaction rates of electron attachment to atomic hydrogen are measured as a function of magnetic field. The reaction takes place in a two-dimensional mixture of hydrogen atoms and electrons on liquid helium surface. Surface electron density, measured by using vibrating capacitor electrometer technique, decreases when H atoms are introduced. Applied high magnetic field suppresses electron attachment, H + e- → H-, as well as hydrogen recombination, H + H → H2. Since the electronic state of negative hydrogen, H-, is spin singlet, electron attachment is suppressed by spin-polarization. Possible microscopic mechanisms to explain the measured magnetic field dependence of the reaction kinetics are discussed.

Original languageEnglish
Pages (from-to)445-450
Number of pages6
JournalJournal of Low Temperature Physics
Volume138
Issue number1-2
DOIs
Publication statusPublished - 2005

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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