Matrix Elements for Low-Energy<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">p</mml:mi><mml:mi>−</mml:mi><mml:mi mathvariant="italic">d</mml:mi></mml:math>Radiative Capture

Smith, M. K.; Knutson, L. D.

doi:10.1103/physrevlett.82.4591

Cited by 12 publications

(19 citation statements)

References 14 publications

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“…In the next two subsections, we report the results for the pd radiative capture at T c.m. = 2.0 and 3.33 MeV, for which there are very accurate cross-section and polarization data [20,49]. One reason for doing so is to test the quality of the bound and scattering wave functions, in particular by studying the rate of convergence of calculated reduced-matrix elements (RMEs) with respect to the number of channels included in the PHH expansions of these wave functions.…”

Section: Resultsmentioning

confidence: 99%

“…The experimental data are from Ref. [49]. In most of the panels, the three curves are indistinguishable.…”

Section: Appendix Amentioning

confidence: 99%

“…= 2 and 3.33 MeV, calculated with the AV18, AV18/UIX and AV18/TM Hamiltonian models are compared with the experimental data of Refs. [20,49] in Figs. 10 and 11.…”

Section: B Test Of the Two-and Three-body Current Modelsmentioning

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: Resultsmentioning

confidence: 99%

“…The experimental data are from Ref. [49]. In most of the panels, the three curves are indistinguishable.…”

Section: Appendix Amentioning

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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“…energies ranging from 0 to 2 MeV 14, 15,16,17 . These data indicate that the reaction proceeds predominantly through S-and P-wave capture.…”

Section: The Pd Radiative Capturementioning

confidence: 99%

“…The results of this fitting procedure are compared with the calculated RMEs in Table 1. The phase of each RME is simply related to the elastic pd phase shift 17 , which at these low energies is essentially the Coulomb phase shift. As can be seen from Table 1, the most significant differences between theoretical and experimental RMEs are found for |p 4 |.…”

Section: The Pd Radiative Capturementioning

confidence: 99%

Interactions, Currents, and the Structure of Few-Nucleon Systems

Schiavilla

2001

Hadrons, Nuclei and Applications

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Our current understanding of the structure of nuclei with A ≤ 8, including energy spectra, electromagnetic form factors, and weak transitions, is reviewed within the context of a realistic approach to nuclear dynamics based on two-and threenucleon interactions and associated electro-weak currents. Low-energy radiative and weak capture reactions of astrophysical relevance involving these light systems are also discussed.

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