K-shell internal ionization and excitation in beta-decay: Theoretical study

Y. Isozumi, S. Shimizu, T. Mukoyama

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The total probability of a K-shake-off process in β-decay has been reformulated by correcting the theory by Law and Campbell. By means of the improved formulation and by adding simple corrections for the K-shake-up contribution and for the correlation effect between K electron and other bound electrons, the total K hole creation probability per β-decay has been evaluated for 24 interesting nuclides. There exist distinct disagreements between our calculated values and recent experimental data; the measured probabilities are systematically larger than our calculated ones for medium- and high-Z nuclides. This clearly indicates that the theory of K shake-off, as here corrected, is not sufficient to explain the recent experimental data. This is contrary to the conclusion recently presented by many other workers that the K-shake-off plus shake-up process is the predominant mechanism of K-shell internal ionization and excitation in β-decay. It will be necessary to introduce the β-particleelectron correlation in future theoretical treatments.

Original languageEnglish
Pages (from-to)359-376
Number of pages18
JournalIl Nuovo Cimento A Series 11
Volume41
Issue number2
DOIs
Publication statusPublished - Sep 1977

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nuclides
ionization
decay
excitation
electrons
formulations

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics

Cite this

K-shell internal ionization and excitation in beta-decay : Theoretical study. / Isozumi, Y.; Shimizu, S.; Mukoyama, T.

In: Il Nuovo Cimento A Series 11, Vol. 41, No. 2, 09.1977, p. 359-376.

Research output: Contribution to journalArticle

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