Advertisement

Multiple Coulomb excitation of a 70Ge beam and the interpretation of the 02+ state as a deformed intruder

  • M. Sugawara
  • Y. Toh
  • T. Czosnyka
  • M. Oshima
  • T. Hayakawa
  • H. Kusakari
  • Y. Hatsukawa
  • J. Katakura
  • N. Shinohara
  • M. Matsuda
  • T. Morikawa
  • A. Seki
  • F. Sakata

Abstract:

Electromagnetic properties of the low-lying states in a 70Ge nucleus were studied through the multiple Coulomb excitation of a 70Ge beam with a natPb target. Relative γ-ray intensities were measured as a function of emission angle relative to the scattered projectile. Sixteen E2 matrix elements, including diagonal ones, for 6 low-lying states have been determined using the least-squares search code GOSIA. The expectation values 〈Q2〉 of 01+ and 02+ states in 70Ge are compared with those in 72, 74, 76Ge. Simple mixing calculations indicate that the 02+ states in 70Ge and 72Se can be treated as deformed intruder states. It is shown that the deformed intruder becomes the ground state in 74Kr. These interpretations of the 02+ states in this region are compared with the potential-energy surface calculations by the Nilsson-Strutinsky model, which allow to interpret the experimental results in a qualitative way from the theoretical point of view.

PACS. 25.70.De Coulomb excitation – 21.10.Ky Electromagnetic moments – 23.20.-g Electromagnetic transitions 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2003

Authors and Affiliations

  • M. Sugawara
    • 1
  • Y. Toh
    • 2
  • T. Czosnyka
    • 3
  • M. Oshima
    • 2
  • T. Hayakawa
    • 2
  • H. Kusakari
    • 4
  • Y. Hatsukawa
    • 2
  • J. Katakura
    • 2
  • N. Shinohara
    • 2
  • M. Matsuda
    • 2
  • T. Morikawa
    • 5
  • A. Seki
    • 6
  • F. Sakata
    • 6
  1. 1.Chiba Institute of Technology, Narashino, Chiba 275-0023, JapanJP
  2. 2.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, JapanJP
  3. 3.Heavy Ion Laboratory, Warsaw University, Warsaw PL-02097, PolandPL
  4. 4.Chiba University, Inage-ku, Chiba 263-8522, JapanJP
  5. 5.Kyushu University, Hakozaki, Fukuoka 812-8581, JapanJP
  6. 6.Department of Mathematical Sciences, Ibaraki University, Mito, Ibaraki 310-8512, JapanJP

Personalised recommendations