Coincidence velocity imaging apparatus for study of angular correlations between photoelectrons and photofragments

Kouichi Hosaka, Jun Ichi Adachi, Alexander V. Golovin, Masahiko Takahashi, Noboru Watanabe, Akira Yagishita

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


A new apparatus for coincidence velocity mapping has been developed for studies on the inner-shell photoionization dynamics of molecules. It enables velocity imaging of electrons and ions simultaneously, and maintains time focusing. The characteristic feature of the apparatus is its applicability to a wide range of photoelectron kinetic energy from a few to 100 eV. To demonstrate the performance of the new apparatus, photoelectron angular distributions from Ne atoms and randomly oriented NO molecules, photoion angular distributions from CO molecules, and photoelectron angular distributions from fixed-in-space CO and NO molecules, have been examined. In the data processing procedures, a new peeling method has been developed to construct a three-dimensional photoelectron angular distribution, which is not cylindrically symmetric, from a two-dimensional one.

Original languageEnglish
Pages (from-to)1841-1849
Number of pages9
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number3 A
Publication statusPublished - 2006 Mar 8


  • Angular correlation
  • Inner-shell photoionization
  • Peeling
  • Photoelectron angular distributions
  • Velocity imaging

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


Dive into the research topics of 'Coincidence velocity imaging apparatus for study of angular correlations between photoelectrons and photofragments'. Together they form a unique fingerprint.

Cite this