Low-Energy Measurement of the B7e(p,γ)B8 Cross Section

F. Hammache, G. Bogaert, P. Aguer, C. Angulo, S. Barhoumi, L. Brillard, J. F. Chemin, G. Claverie, A. Coc, M. Hussonnois, M. Jacotin, J. Kiener, A. Lefebvre, C. Le Naour, S. Ouichaoui, J. N. Scheurer, V. Tatischeff, J. P. Thibaud, and E. Virassamynaïken
Phys. Rev. Lett. 86, 3985 – Published 30 April 2001
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Abstract

We have measured the cross section of the 7Be(p,γ)8B reaction for Ec.m.=185.8, 134.7, and 111.7 keV using a radioactive 7Be target (132 mCi). Single and coincidence spectra of β+ and α particles from 8B and 8Be* decay, respectively, were measured using a large acceptance spectrometer. The zero energy S factor inferred from these data is 18.5±2.4eVb and a weighted mean value of 18.8±1.7eVb (theoretical uncertainty included) is deduced when combining this value with our previous results at higher energies.

  • Received 23 May 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.3985

©2001 American Physical Society

Authors & Affiliations

F. Hammache1,*, G. Bogaert1,†, P. Aguer2, C. Angulo3, S. Barhoumi5, L. Brillard4, J. F. Chemin2, G. Claverie2, A. Coc1, M. Hussonnois4, M. Jacotin1, J. Kiener1, A. Lefebvre1, C. Le Naour4, S. Ouichaoui5, J. N. Scheurer2, V. Tatischeff1, J. P. Thibaud1, and E. Virassamynaïken2

  • 1CSNSM, IN2P3-CNRS, F-91405 Orsay et Université de Paris-Sud, France
  • 2CENBG, IN2P3-CNRS, et Université de Bordeaux I, F-33175 Gradignan, France
  • 3Centre de Recherches du Cyclotron, UCL, Chemin du Cyclotron 2, B-1348 Louvain la Neuve, Belgium
  • 4IPN, IN2P3-CNRS et Université de Paris-Sud, F-91406 Orsay, France
  • 5Institut de Physique, USTHB, B.P. 32, El-Alia, Bab Ezzouar, Algiers, Algeria

  • *Present address: GSI mbH, Planckstrasse 1, D-64291 Darmstadt, Germany.
  • Permanent address: LPNHE, Ecole Polytechnique, 91128 Palaiseau, France.

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Vol. 86, Iss. 18 — 30 April 2001

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