Selection of the residual gas pressure suitable for operating a positive ion source of thermal ionization type.

Autor: Kawano, Hiroyuki, Ogasawara, Keiko, Kobayashi, Hajime, Tanaka, Akihide, Takahashi, Tomoko, Tagashira, Yasuhide
Předmět:
Zdroj: Review of Scientific Instruments; Feb1998, Vol. 69 Issue 2, p1182, 3p, 1 Chart, 8 Graphs
Abstrakt: Describes the relationship among the ionization efficiency, work function, constant temperature and residual gas pressure (P) of surface systems. Selection of P suitable for a thermal positive ion source operation; Implications of the relationship for a molecular beam; Dependence of ionization efficiency on the residual gas pressure.
Databáze: Complementary Index