14 pp.
14 pp.
| 705 K 14 pp. | |
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| Title | Internal Energy Dependence of Molecular Condensation Coefficients Determined from Molecular Beam Surface Scattering Experiments | |
| Author(s) | Sibener, S. J.; Lee, Y. T. | |
| Publication Date | May 1978 | |
| Report Number | LBL-7395 | |
| Unique Identifier | ACC0286 | |
| Other Numbers | CONF-780728-3; OSTI ID: 6403272 | |
| Research Org | Lawrence Berkeley Laboratory, University of California, Berkeley, CA (USA) | |
| Contract No | W-7405-ENG-48 | |
| Sponsoring Org | US Department of Energy (DOE) | |
| Other Information | 11th Symposium on Rarefied Gas Dynamics; 3 Jul 1978; Cannes, France | |
| Subject | 640301 -- Atomic, Molecular & Chemical Physics -- Beams & their Reactions; Carbon Tetrachloride -- Collisions; Carbon Tetrachloride -- Molecule Collisions; Angular Distribution; Energy Dependence; Molecular Beams; Probability; Reflection; Surfaces | |
| Keywords | Beams; Chlorinated Aliphatic Hydrocarbons; Collisions; Distribution; Halogenated Aliphatic Hydrocarbons; Organic Chlorine Compounds; Organic Compounds; Organic Halogen Compounds; Sticking Probability, Reflection Intensity, Angular Distribution | |
| Related Web Pages | Yuan T. Lee and Molecular Beam Studies | |
| Abstract | An experiment was performed which confirms the existence of an internal mode dependence of molecular sticking probabilities for collisions of molecules with a cold surface. The scattering of a velocity selected effusive beam of CCl{sub 4} from a 90 K CC1{sub 4} ice surface has been studied at five translational velocities and for two different internal temperatures. At a surface temperature of 90 K (approx. 99% sticking probability) a four fold increase in reflected intensity was observed for the internally excited (560 K) CC1{sub 4} relative to the room temperature (298 K) CC1{sub 4} at a translational velocity of 2.5 X 10{sup 4} cm/sec. For a surface temperature of 90 K all angular distributions were found to peak 15{sup 0} superspecularly independent of incident velocity. | |
| 705 K 14 pp. | |
| View Document | ||
