The Interaction of Inert Atoms with Solid Surfaces: Modification of the Equation of State of a Noble Gas.

reportActive / Technical Report | Accession Number: AD0719909 | Need Help?

Abstract:

The thermodynamics of a gas of closed-shell atoms is studied when the gas is in an enclosure whose walls are covered by some adsorbing material. The gas-surface interaction is seen to modify the equation of state, and the pressure deviates from the perfect gas law by a factor proportional to the ratio of the surface area of the adsorber to the volume of the box. A possible experiment to test this finding is suggested for the system of helium gas on a substrate of rutile. The process of physical adsorption is related to the diffraction of an atom by the periodic potential structure of the surface followed by its capture in the surface field. Author

Author(s):
Bagchi, Amitabha
Author Organization(s):
CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF PHYSICS
Descriptive Note:
Technical rept.,
Supplementary Note:
Prepared in cooperation with Illinois Univ., Urbana. Materials Research Lab., Contract DAHC15-67-C-0221.
Pagination:
0049

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-2
Contract/Grant Number(s):
N00014-69-A-0200-6026
Project Number(s):
NR-017-631
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*GASES, SURFACES), (*HELIUM, *ADSORPTION), THERMODYNAMICS, RARE GASES, RUTILE, TITANIUM COMPOUNDS, MATHEMATICAL ANALYSIS, SCATTERING
Field(s)/Group(s):
Physical Chemistry
Keyword(s):
*GASES, *INTERACTIONS, *SURFACES, *SURFACE CHEMISTRY
Report Date:
1970 Jan 01