Translational and vibrational energy release in nitrogen recombinative desorption from Cu(111)

Autor:	Andrew Hodgson, M.J. Murphy, J. F. Skelly
Rok vydání:	1997
Předmět:	education.field_of_study Chemistry Population Analytical chemistry General Physics and Astronomy Resonance Ion Time of flight Ionization Desorption Physical and Theoretical Chemistry education Ground state Vibrational temperature
Zdroj:	Chemical Physics Letters. 279:112-118
ISSN:	0009-2614
DOI:	10.1016/s0009-2614(97)00969-x
Popis:	Nitrogen recombinative desorption from Cu(111) has been investigated using resonance enhanced multiphoton ionisation and ion time of flight measurements to obtain the energy release into N2 product vibrational and translational excitation. N2(ν = 0) desorbs from a 700 K surface with a mean translational energy perpendicular to the surface of 4.2 eV, a substantial fraction of the N2 bond strength. The desorbed molecules are vibrationally hot, with a population ratio P(ν = 1)/P(ν = 0) = 0.52, corresponding to a vibrational temperature of 5100 K, and N2(ν = 1) shows a slightly lower translational energy release than the ground state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b8191c0c018d004904e1ac14bc4878dc https://doi.org/10.1016/s0009-2614(97)00969-x Zobrazit plný text záznamu Full Text from ScienceDirect