Radiative neutron capture by deuterium

Mitev, G.; Colby, P.C.; Roberson, N. R.; Weller, H. R.

doi:10.1103/physrevc.34.389

Cited by 27 publications

(28 citation statements)

References 30 publications

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“…with the experimental results of Ref. [73], which is the only direct measurement of the 2 H(n, γ) 3 H differential cross section. The dashed curves represent the results obtained with the inclusion of the single-nucleon current only, the dotted-dashed curves are obtained with one-and new-ME two-body contributions (both MI and MD), and the solid curves represent the "full-new" result, obtained including, in addition to the one-body and above-mentioned two-body currents, also the ME three-body current contributions.…”

Section: The 2 H(n γ) 3 H Radiative Capture Reactionmentioning

confidence: 99%

“…There are also inconsistencies between the asymmetries given in Refs. [73,84], therefore it is likely that these discrepancies are due to experimental problems. However, if experimentally confirmed, this problem could be of relevance, since the present calculations seem unable to predict |a s (nd)| > 0.1.…”

Section: The Fore-aft Asymmetrymentioning

confidence: 99%

“…In addition to unpolarized cross sections, there are also a few analyzing-power angular distribution data [73], but they have large error bars, and therefore we have decided not to perform a comparison for this observable. In Fig.…”

Section: The 2 H(n γ) 3 H Radiative Capture Reactionmentioning

confidence: 99%

“…The experimental data are from Ref. [73]. [25] (thin solid curves) using the AV18/UIX potential model.…”

Section: Appendix Amentioning

confidence: 99%

“…At higher energies, there exist several measurements of the unpolarized differential cross section for both the radiative capture process 2 H(n, γ) 3 H [73] and for the "time-reversed" process 3 H(γ, n) 2 H [82][83][84][85][86]. In the c.m.…”

Section: The 2 H(n γ) 3 H Radiative Capture Reactionmentioning

confidence: 99%

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Electromagnetic structure of A=2 and 3 nuclei and the nuclear current operator

et al. 2005

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Different models for conserved two-and three-body electromagnetic currents are constructed from two-and three-nucleon interactions, using either meson-exchange mechanisms or minimal substitution in the momentum dependence of these interactions. The connection between these two different schemes is elucidated. A number of low-energy electronuclear observables, including (i) np radiative capture at thermal neutron energies and deuteron photodisintegration at low energies, (ii) nd and pd radiative capture reactions, and (iii) isoscalar and isovector magnetic form factors of 3 H and 3 He, are calculated in order to make a comparative study of these models for the current operator. The realistic Argonne v18 two-nucleon and Urbana IX or Tucson-Melbourne three-nucleon interactions are taken as a case study. For A=3 processes, the bound and continuum wave functions, both below and above deuteron breakup threshold, are obtained with the correlated hyperspherical-harmonics method. Three-body currents give small but significant contributions to some of the polarization observables in the 2 H(p, γ) 3 He process and the 2 H(n, γ) 3 H cross section at thermal neutron energies. It is shown that the use of a current which did not exactly satisfy current conservation with the two-and three-nucleon interactions in the Hamiltonian was responsible for some of the discrepancies reported in previous studies between the experimental and theoretical polarization observables in pd radiative capture.

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Section: The 2 H(n γ) 3 H Radiative Capture Reactionmentioning

confidence: 99%

Section: The Fore-aft Asymmetrymentioning

confidence: 99%

Section: The 2 H(n γ) 3 H Radiative Capture Reactionmentioning

confidence: 99%

“…The experimental data are from Ref. [73]. [25] (thin solid curves) using the AV18/UIX potential model.…”

Section: Appendix Amentioning

confidence: 99%

Section: The 2 H(n γ) 3 H Radiative Capture Reactionmentioning

confidence: 99%

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Electromagnetic structure of A=2 and 3 nuclei and the nuclear current operator

et al. 2005

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Modern Chiral Forces Applied to the Nucleon–Deuteron Radiative Capture

et al. 2017

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The chiral nucleon-nucleon interaction with semi-local regularization up to the fifth order of chiral expansion is applied to the nucleon-deuteron radiative capture process. Our theoretical approach is based on the formalism of Faddeev equations and the Siegert theorem is exploited to construct the electromagnetic current operator. The very weak dependence of the differential cross section on values of the regularization parameter is observed. This suggests that the improved chiral two-body interaction is a promising starting point to study electromagnetic processes at low energies.

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