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. Author manuscript; available in PMC: 2012 Aug 1.
Published in final edited form as: Anal Chem. 2011 Jul 8;83(15):5831–5833. doi: 10.1021/ac201537b

Figure 2.

Figure 2

The particle-buffer gas collision rate at 30 mTorr at the exit orifice into vacuum calculated from equation (1) with the assumption that the particle is stationary relative to the gas velocity.