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 language | English |
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Article number | 012105 |
Journal | Applied Physics Letters |
Volume | 91 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2007 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)