Theoretical study on ammonia cluster ions: Nature of kinetic magic number

Hiromi Nakai*, Touichirou Goto, Yoshiki Okada, Takaaki Orii, Kazuo Takeuchi, Masahiko Ichihashi, Tamotsu Kondow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


We theoretically investigated collision cross sections due to the attractive forces between NH4+(NH3)n-1 (n = 2-8) and ND3. We found that the dependence of the collision cross sections on collision energy and cluster size are comparable to those of measured fusion cross sections. The kinetic magic number, n = 5, is related to the structure of the pentamer. Namely, the center ion in the pentamer is surrounded by first-shell ammonia molecules.

Original languageEnglish
Pages (from-to)7409-7415
Number of pages7
JournalJournal of Chemical Physics
Issue number17
Publication statusPublished - 2000 May 1

ASJC Scopus subject areas

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


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