Question: Problem 5 - Vacuum Technology - 10 points (5/5) (a) What is the gas flux striking a surface in air at 1atm (1013 mbar) and

Problem 5 - Vacuum Technology - 10 points (5/5) (a) What is the gas flux striking a surface in air at 1atm (1013 mbar) and 300K ? (5 points) (b) Calculate the gas pressure necessary to keep a 1cm2Pt(100) surface clean for 1h at 300 K. Assume a sticking coefficient of 1 , no dissociation of the gas molecules upon adsorptions, and "clean" means a coverage of less than 0.01ML (monolayer). 1ML coverage is defined here as 1015 atoms /cm2. (5 points)

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