Precision measurement of the 9.641 MeV, 3 state in 12C

Tz. Kokalova, M. Freer, Z. Buthelezi, J. Carter, R. W. Fearick, S. V. Förtsch, H. Fujita, R. Neveling, P. Papka, F. D. Smit, J. A. Swartz, and I. Usman
Phys. Rev. C 87, 057307 – Published 28 May 2013

Abstract

High-energy-resolution magnetic spectrometer measurements have been used to determine the width of the 9.641 MeV 12C, 3 excited state. The width is found to be 48(2) keV with an R-matrix analysis. This would correspond to 30% of the Wigner limit, indicating a significant α-particle content to the state. This is a marked improvement on results of earlier studies that yielded 34(5) keV.

  • Received 17 August 2012

DOI:https://doi.org/10.1103/PhysRevC.87.057307

©2013 American Physical Society

Authors & Affiliations

Tz. Kokalova1, M. Freer1, Z. Buthelezi2, J. Carter3, R. W. Fearick4, S. V. Förtsch2, H. Fujita3, R. Neveling2, P. Papka5, F. D. Smit2, J. A. Swartz5, and I. Usman3

  • 1School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom
  • 2iThemba LABS, PO Box 722, Somerset West 7129, South Africa
  • 3School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
  • 4Physics Department, University of Cape Town, Private Bag, Rondebosch 7700, South Africa
  • 5Physics Department, University of Stellenbosch, Private Bag X1, Matieland 7602, Stellenbosch, South Africa

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Vol. 87, Iss. 5 — May 2013

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