Forward- and Backward-Angle Differential Cross Section for Neutron-Proton Capture at 72 MeV

Gilot, J.-F.; Bol, Anne; Leleux, Pierre; Lipnik, P.; Macq, Pierre

doi:10.1103/physrevlett.47.304

Cited by 34 publications

(7 citation statements)

References 11 publications

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“…Some 20 years ago it was observed that deuteron photodisintegration yielded forward going (0 • ) protons [7] in greater numbers than nonrelativistic theory predicted. This was subsequently confirmed by two independent measurements [8,9]. The observation was demonstrated to provide evidence for the contribution of the relativistic spin-orbit dipole operator even at photon energies well below 50 MeV [10,11].…”

Section: Introductionsupporting

confidence: 52%

Parity conservingγasymmetry inn-pradiative capture

1997

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The importance of n-p radiative capture, utilizing polarized cold neutrons, as a means of measuring the weak pion coupling constant is reviewed. Parity conserving processes of the form k γ · (s n × k n ) can contribute to the s n · k γ photon asymmetry in any such experiment, if the apparatus is not perfectly symmetric. For an incident laboratory neutron energy of 0.003 eV a value of A P C γ = 0.67 × 10 −8 is obtained for two different potential models (Argonne AV14 and Nijmegen Reid93). Serving as an extreme test case, the Reid soft core potential yields 0.61 × 10 −8 , close to the result of the contemporary forces. Implications for extracting the weak pion coupling constant and for monitoring the beam polarization are discussed.

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Section: Introductionsupporting

confidence: 52%

Parity conservingγasymmetry inn-pradiative capture

1997

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“…1). A proton beam (1) from the Indiana University Cyclotron Facility (IUCF) passes through a 2-g/cm 2 natural Li target (2), is deflected magnetically (3), and dumped (4). Neutrons emitted at forward angles from the reaction 7 Li(p,n) 7 Be are collimated (5), and pass through a 5-cm-thick Pb absorber (6), designed to stop remaining charged particles.…”

Section: Absolute Cross Section For Neutron-proton Radiativementioning

confidence: 99%

Absolute Cross Section for Neutron-Proton Radiative Capture atTn=185MeV

et al. 1984

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“…From the experimental side, the interest in this specific reaction was triggered by the results from the pioneering work by Hughes et al [ 2 ], who measured the forward differential cross section in the photon energy interval from 20 to 120 MeV. These data were independently confirmed by various (mostly radiative capture) measurements [11][12][13][14][15][16]. Furthermore, a recent measurement [ 17 ] of this cross section at 10.74 MeV photon energy aimed at the verification of the existence of the theoretically predicted minimum in that energy region.…”

mentioning

confidence: 98%

The absolute forward photodisintegration cross section of the deuteron at low excitation energies

Graeve¹,

Zieger²,

Vyver³

et al. 1989

Physics Letters B

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The 2H (),, p ) n cross section was measured absolutely at 0 ° for the outgoing proton, for photon energies between 8 and 18 MeV. The rising trend observed in the cross section in this energy region indicates the existence of the theoretically predicted minimum. Our results at Ev..~ 10 MeV are well described by recent relativistic calculations, the data around 15 MeV, on the contrary, are commonly underestimated.

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Forward- and Backward-Angle Differential Cross Section for Neutron-Proton Capture at 72 MeV

Cited by 34 publications

References 11 publications

Parity conservingγasymmetry inn-pradiative capture

Parity conservingγasymmetry inn-pradiative capture

Absolute Cross Section for Neutron-Proton Radiative Capture atTn=185MeV

The absolute forward photodisintegration cross section of the deuteron at low excitation energies

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