Highly sensitive hydrogen detection by medium energy Ne+ impact

K. Mitsuhara, T. Kushida, H. Okumura, H. Matsumoto, Anton Visikovskiy, Y. Kido

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Hydrogen atoms on solid surfaces were measured directly by elastic recoil detection analysis (ERDA) using medium energy (100-150 keV) Ne+ ions with an excellent sensitivity of (∼ 1 × 1012 H/cm2) without any absorber foils and time-of-flight techniques. An electrostatic toroidal analyzer acquired H+ ions with energy around 11 keV recoiled from Si(111)-1 × 1-H surfaces. The H+ fraction strongly depends upon emerging angle and takes a value more than 50% at the angle below 70° and a saturated value of 17% at the angle above 80° with respect to surface normal. We detected H atoms on the reduced TiO2(110) exposed to water molecules at room temperature (2 L) and estimated the absolute amount of H to be ∼ 2.0 × 1014 H/cm2 corresponding to ∼ 38% (∼ 0.38 ML) of the bridging oxygen atoms.

Original languageEnglish
JournalSurface Science
Volume604
Issue number17-18
DOIs
Publication statusPublished - Aug 30 2010

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Hydrogen
Atoms
hydrogen
Ions
solid surfaces
Metal foil
energy
Electrostatics
foils
emerging
oxygen atoms
analyzers
hydrogen atoms
absorbers
ions
electrostatics
Oxygen
Molecules
Water
sensitivity

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Highly sensitive hydrogen detection by medium energy Ne+ impact. / Mitsuhara, K.; Kushida, T.; Okumura, H.; Matsumoto, H.; Visikovskiy, Anton; Kido, Y.

In: Surface Science, Vol. 604, No. 17-18, 30.08.2010.

Research output: Contribution to journalArticle

Mitsuhara, K, Kushida, T, Okumura, H, Matsumoto, H, Visikovskiy, A & Kido, Y 2010, 'Highly sensitive hydrogen detection by medium energy Ne+ impact', Surface Science, vol. 604, no. 17-18. https://doi.org/10.1016/j.susc.2010.05.018
Mitsuhara, K. ; Kushida, T. ; Okumura, H. ; Matsumoto, H. ; Visikovskiy, Anton ; Kido, Y. / Highly sensitive hydrogen detection by medium energy Ne+ impact. In: Surface Science. 2010 ; Vol. 604, No. 17-18.
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