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Direct evidence of inefficient vibrational energy transfer in gas-surface collisions

Amorebieta, V. T. and Colussi, A. J. (1982) Direct evidence of inefficient vibrational energy transfer in gas-surface collisions. Journal of Physical Chemistry, 86 (16). pp. 3058-3060. ISSN 0022-3654 . http://resolver.caltech.edu/CaltechAUTHORS:20150623-154815098

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Abstract

Vibrational energy equilibration between n-octane and hot seasoned silica surfaces at T, has been studied at low pressures (≤10^-4) torr) by modulated beam mass spectrometry in the range 350 ≤ T_S ≤ 800 K. The sensitive temperature dependence of the dissociative ionization of n-octane at 15 eV was used to monitor the temperatures attained by the gas after undergoing a few nonreactive collisions with the surface. In this system, the low-lying vibrational levels of n-octane, whose relative populations account for the mass spectral changes, never reach T_S in a single collision: the vibrational energy accommodation coefficient has a value of 0.66 at 350 K and decreases with temperature.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/j100213a002DOIArticle
http://pubs.acs.org/doi/abs/10.1021/j100213a002PublisherArticle
ORCID:
AuthorORCID
Colussi, A. J.0000-0002-3400-4101
Additional Information:© 1982 American Chemical Society. (Received March 29, 1982; In Final Form: June 4, 1982) Generous support from Comision de Investigaciones Cientificas de la Provincia de Buenos Aires is gratefully acknowledged.
Funders:
Funding AgencyGrant Number
Comision de Investigaciones Cientificas de la Provincia de Buenos AiresUNSPECIFIED
Record Number:CaltechAUTHORS:20150623-154815098
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150623-154815098
Official Citation:Direct evidence of inefficient vibrational energy transfer in gas-surface collisions V. T. Amorebieta and A. J. Colussi The Journal of Physical Chemistry 1982 86 (16), 3058-3060 DOI: 10.1021/j100213a002
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58548
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:24 Jun 2015 17:42
Last Modified:24 Jun 2015 17:42

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