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

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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