The influence of wall conditioning procedures on outgassing rate of stainless-steel in the “Uragan-2M” torsatron
Journal: The scientific electronic library of periodicals of the National Academy of Sciences of Ukraine (National Academy of Sciences of Ukraine)
Year: 2012

Using the thermal desorption method the investigations were carried out of stainless steel probe outgassing rate in a vacuum and estimation of the number of monolayers on its surface in the Uragan-2M torsatron in situ. The decrease of surface impurity by more than one order of magnitude was measured at the vacuum improvement from 1.6·10⁻⁶ Torr up to 6.5·10⁻⁷ Torr after pumping and RF discharge cleaning. Mass-spectrometric measurements has shown H₂O (18 m/e), Co₂ (44 m/e) and 28 m/e (CO+N₂), as t