NUCLEAR PHYSICS |
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The Photon Polarization Parameter of 2H(n,γ)3H reaction with Inclusion of the Electric Quadrupole Contribution |
H. Sadeghi**, M. Mosavi-Khansari |
Department of Physics, Faculty of Science, Arak University, Arak 8349-8-38156, Iran
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Cite this article: |
H. Sadeghi, M. Mosavi-Khansari 2014 Chin. Phys. Lett. 31 092102 |
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Abstract We use effective field theory (EFT) for the calculation of neutron–deuteron radiative capture at very low energies. We present here the use of EFT to calculate a low-energy photo-nuclear observable in three-body systems, the photon polarization parameter and fore–aft asymmetry at thermal neutron energies up to next-to-next to leading order (N2LO), with inclusion of the electric quadrupole contribution. The photon polarization parameter in total is found to be Rc=?0.421±0.003 and is in good agreement with the other modern theoretical calculations based on modern nucleon–nucleon potentials. In comparison with our previous work, a satisfactory agreement with the available experimental data is found by inclusion of the electric quadrupole contribution.
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Published: 22 August 2014
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