Measurement of pressures in 10-10 Pa range from the damping speed of field emission current

B. Cho, T. Itagaki, T. Ishikawa, C. Oshima

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The damping behavior of field emission (FE) currents was monitored with W(111) tips under pressures down to 5× 10-10 Pa. Semilogarithmic damping curves of FE currents were linear for 0.3 L hydrogen exposure in the thoroughly degassed extreme high vacuum (XHV) FE system. The slope of semilogarithmic damping curves was linearly proportional to the operation pressure, suggesting a method of measuring pressure in an XHV range. Electron stimulated desorption was not observed.

Original languageEnglish
Article number012105
JournalApplied Physics Letters
Volume91
Issue number1
DOIs
Publication statusPublished - 2007

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field emission
damping
curves
high vacuum
desorption
slopes
hydrogen
electrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Measurement of pressures in 10-10 Pa range from the damping speed of field emission current. / Cho, B.; Itagaki, T.; Ishikawa, T.; Oshima, C.

In: Applied Physics Letters, Vol. 91, No. 1, 012105, 2007.

Research output: Contribution to journalArticle

Cho, B. ; Itagaki, T. ; Ishikawa, T. ; Oshima, C. / Measurement of pressures in 10-10 Pa range from the damping speed of field emission current. In: Applied Physics Letters. 2007 ; Vol. 91, No. 1.
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