CPC G01N 1/02 (2013.01) [G01N 15/02 (2013.01); G01N 15/065 (2013.01); G01N 15/14 (2013.01); G01N 2001/028 (2013.01); G01N 2015/0019 (2013.01); G01N 2015/0294 (2013.01); G01N 2015/1493 (2013.01); G01N 2015/1497 (2013.01)] | 20 Claims |
1. A method comprising:
directing a stream comprising at least one of solid CO2 particles or CO2 droplets toward an article, wherein the article comprises a plurality of surface particles, and wherein the stream comprising at least one of solid CO2 particles or CO2 droplets causes at least a portion of the plurality of surface particles on the article to dislodge from a surface of the article;
initiating a purge cycle to transport at least some of a portion of the plurality of surface particles dislodged from the surface of the article away from the surface of the article, wherein the purge cycle comprises generating a laminar flow at a first velocity for a first time period and subsequently generating a laminar flow at a second velocity for a second time period;
determining whether a number of particles transported away from the surface of the article satisfies a particle criterion; and
responsive to determining that the number of particles transported away from the surface of the article does not satisfy the particle criterion, re-initiating the purge cycle.
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