Ion-induced desorption

Rough estimate from:

(?I)crit = 12 e w / ? L2

S

S

...

...

L

d

for H2O at 300 K, with d = 1.2 cm and L = 1.2 m:

w ? 38.1 (T/M)1/2 d3 ? 2.7 10-4 m4/s

? ? 2 10-22 m2

(?I)crit ? 1.8 A

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