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Photon Linear Polarization Coefficient of the Radiative Capture Process 2H(p,γ)3He at Thermal Energies |
| H. Sadeghi** |
Department of Physics, Faculty of Science, Arak University, Arak 8349-8-38156, Iran
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| Cite this article: |
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H. Sadeghi 2012 Chin. Phys. Lett. 29 122101 |
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Abstract The photon polarization parameter of the proton-deuteron radiative capture process at thermal proton energies is calculated up to leading order (LO), using pionless effective field theory (EFT). In order to make a comparative study of this model, we compare our results for the photon polarization parameter with the realistic Argonne (AV14) and Argonne v18(AV18) modern nucleon-nucleon potentials and Urbana IX or Tucson-Melbourne three-nucleon interactions. The theoretical description of the 2H(p,γ)3He reaction at thermal energies is complicated by the presence of the Coulomb interaction. Only the s-wave capture contribution to the thermal energy of this reaction is calculated. Three-body currents give small but significant contributions to some of the observables in the proton-deuteron radiative capture cross section at thermal neutron energies. Our result is in good agreement with the available experimental data and potential models' calculation at this order.
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Received: 21 August 2012
Published: 04 March 2013
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