A photoionization and photoelectron study of vibrational and electronic cooling in metal molecular beams

Jason F. Fuller, Shenggang Li, Bradford R. Sohnlein, Gretchen K. Rothschopf, Dong Sheng Yang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Threshold photoionization and pulsed-field-ionization zero-electron-kinetic-energy photoelectron spectra have been used to study the vibrational cooling of Cu-N(CH3)3 and the electronic cooling of Al-NH3 in helium and argon supersonic jets. The vibrational temperatures of Cu-N(CH3)3 are estimated to be ∼40 K in argon and ∼120 K in helium, whereas the electronic temperatures of Al-NH3 are about 20 and 80 K, respectively. Argon more efficiently cools the internal degrees of freedom of the metal systems, but helium provides additional spectroscopic information about the neutral molecules. The differences in the observed spectra have greatly facilitated spectral assignments for these complexes.

Original languageEnglish
Pages (from-to)141-146
Number of pages6
JournalChemical Physics Letters
Volume366
Issue number1-2
DOIs
StatePublished - Nov 25 2002

Bibliographical note

Funding Information:
Support for this research was provided by the National Science Foundation (CHE-0111227) and the Petroleum Research Fund (37108-AC6), administrated by the American Chemical Society.

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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