Photon angular distribution and nuclear-state alignment in nuclear excitation by electron capture

Adriana Pálffy, Zoltán Harman, Andrey Surzhykov, Ulrich D. Jentschura

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3 Citations (Scopus)

Abstract

The alignment of nuclear states resonantly formed in nuclear excitation by electron capture (NEEC) is studied by means of a density matrix technique. The vibrational excitations of the nucleus are described by a collective model and the electrons are treated in a relativistic framework. Formulas for the angular distribution of photons emitted in the nuclear relaxation are derived. We present numerical results for alignment parameters and photon angular distributions for a number of heavy elements in the case of E2 nuclear transitions. Our results are intended to help future experimental attempts to discern NEEC from radiative recombination, which is the dominant competing process.

Original languageEnglish
Article number012712
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume75
Issue number1
DOIs
Publication statusPublished - Jan 25 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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