Photoionization of hot radicals: C 2H 5,n-C 3H 7, and i-C 3H 7

Haiyan Fan, S. T. Pratt

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The combination of ion-imaging and vacuum-ultraviolet (vuv) single-photon ionization is used to study the internal energy dependence of the relative photoionization yields of the C2 H5, n- C3 H7, and i- C3 H7 radicals following the 266 nm photodissociation of the corresponding alkyl iodides. The comparison of the ion images obtained by vuv photoionization of the radical with those obtained by two-photon-resonant, three-photon ionization of the complementary I P 32 2 and I* P 12 2 atoms allows the extraction of the internal energy dependence of the cross sections. Factors influencing the appearance of the ion images in the different detection channels are discussed, including the secondary fragmentation of the neutral radicals, Franck-Condon factors for the photoionization process, and the unimolecular fragmentation of the parent photoions.

Original languageEnglish
Article number204301
JournalJournal of Chemical Physics
Volume123
Issue number20
DOIs
Publication statusPublished - Dec 9 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Photoionization of hot radicals: C <sub>2</sub>H <sub>5</sub>,n-C <sub>3</sub>H <sub>7</sub>, and i-C <sub>3</sub>H <sub>7</sub>'. Together they form a unique fingerprint.

Cite this