Energy dependence for pair production with electron capture in relativistic heavy-ion collisions

R.J.S. Lee, Derrick Crothers

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In 'Charge transfer from the negative-energy continuum: alternative mechanism for pair production in relativistic atomic collisions', Eichler (1995 Phys. Rev. Lett. 75 3653) proposes an alternative mechanism for capture by pair production, and from it derives an analytic expression for the total cross section with a surprisingly strong energy dependence. We show that, in fact, there is no alternative mechanism; rather the above mechanism may be more transparently viewed as an ionization-like transition in one centre with inclusion of continuum distortion by the second centre. We further show that to Centre the initial and final states on the target and projectile leads to confusion in the momentum transfer vectors, and hence, respectively that the alleged high-energy behaviour is erroneous.
Original languageEnglish
Pages (from-to)L687-L692
Number of pages6
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Volume34
Issue number21
Publication statusPublished - 14 Nov 2001

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

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