RELATIONSHIP BETWEEN THE RESIDUAL-GAS PRESSURE AND THE LOWEST TEMPERATURE KEEPING METAL-SURFACES ESSENTIALLY CLEAN IN HIGH VACUA

Authors
KAWANO H OHGAMI K FUNATO K MATSUI S
Citation
H. Kawano et al., RELATIONSHIP BETWEEN THE RESIDUAL-GAS PRESSURE AND THE LOWEST TEMPERATURE KEEPING METAL-SURFACES ESSENTIALLY CLEAN IN HIGH VACUA, Vacuum, 46(8-10), 1995, pp. 1149-1150
Citations number
5
Categorie Soggetti
Physics, Applied
Journal title
Vacuum → ACNP
ISSN journal
0042207X
Volume
46
Issue
8-10
Year of publication
1995
Pages
1149 - 1150
Database
ISI
SICI code
0042-207X(1995)46:8-10<1149:RBTRPA>2.0.ZU;2-0
Abstract
Effective work functions for thermal positive ionic and electronic emi ssions from heated metal surfaces were measured, from the data on whic h the lowest surface temperatures (T) keeping each surface atomically clean were determined to be about 1990, 1970 and 1710 K for Mo, Wand Re, respectively, in the residual gas pressure (P) of about 2 x 10(-5) Pa The data obtained with Re at P approximate to 10(-5)-10(-3) Pa yie lded T = 2820+241 log P.