Electromagnetic Transition from the 4+ to 2+ Resonance in Be8 Measured via the Radiative Capture in He4+He4

V. M. Datar, D. R. Chakrabarty, Suresh Kumar, V. Nanal, S. Pastore, R. B. Wiringa, S. P. Behera, A. Chatterjee, D. Jenkins, C. J. Lister, E. T. Mirgule, A. Mitra, R. G. Pillay, K. Ramachandran, O. J. Roberts, P. C. Rout, A. Shrivastava, and P. Sugathan
Phys. Rev. Lett. 111, 062502 – Published 9 August 2013
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Abstract

An earlier measurement on the 4+ to 2+ radiative transition in Be8 provided the first electromagnetic signature of its dumbbell-like shape. However, the large uncertainty in the measured cross section does not allow a stringent test of nuclear structure models. This Letter reports a more elaborate and precise measurement for this transition, via the radiative capture in the He4+He4 reaction, improving the accuracy by about a factor of 3. Ab initio calculations of the radiative transition strength with improved three-nucleon forces are also presented. The experimental results are compared with the predictions of the alpha cluster model and ab initio calculations.

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  • Received 3 May 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.062502

© 2013 American Physical Society

Authors & Affiliations

V. M. Datar1,2, D. R. Chakrabarty1, Suresh Kumar1,2, V. Nanal3, S. Pastore4, R. B. Wiringa5, S. P. Behera1, A. Chatterjee1, D. Jenkins6, C. J. Lister5, E. T. Mirgule1, A. Mitra1, R. G. Pillay3, K. Ramachandran1, O. J. Roberts6, P. C. Rout1,2, A. Shrivastava1, and P. Sugathan7

  • 1Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
  • 2Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
  • 3Tata Institute of Fundamental Research, Mumbai 400 005, India
  • 4Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
  • 5Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 6Department of Physics, University of York, Heslington, York Y010 5DD, United Kingdom
  • 7Inter University Accelerator Centre, New Delhi 110064, India

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Issue

Vol. 111, Iss. 6 — 9 August 2013

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