Neutron-neutron effective range from a comparison of n-n and n-p quasi-free scattering at 24 MeV

Witsch, W. von; Moreno, B.; Rosenstock, W.; Franke, R.; Steinheuer, B.

doi:10.1016/0370-2693(80)90991-0

Cited by 18 publications

(5 citation statements)

References 9 publications

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“…The result is compatible with the value extracted from pp scat tering (38,39,47,48) of 2.84 fm . It is also consistent with more recent results from the analysis of quasi-free nd -+ pnn scattering (63)(64)(65).…”

Section: Neutron-neutron Scattering Lengthsupporting

confidence: 92%

Pion-Nucleus Interactions

Gibbs¹,

Gibson²

1987

Annu. Rev. Nucl. Part. Sci.

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Section: Neutron-neutron Scattering Lengthsupporting

confidence: 92%

Pion-Nucleus Interactions

Gibbs¹,

Gibson²

1987

Annu. Rev. Nucl. Part. Sci.

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“…The neutron-neu tron effective radius r nn = 2.84(4) fm obtained in this study is practically equal to the value r nn = 2.83(11) fm determined directly from experiment [35] and well agrees with the value r nn = 2.83(16) fm given in [41]. The effective radius obtained by us is in somewhat poorer agreement with the other values, namely, r nn = 2.69 (27) fm [42], r nn = 2.9(4) fm [43], and r nn = 2.65(18) fm [44], not contradicting them.…”

Section: Discussionsupporting

confidence: 80%

Mirror nuclei 3H and 3He binding energies difference and low energy parameters of neutron-neutron scattering

Бабенко

Petrov

2015

Phys. Part. Nuclei Lett.

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A relationship between the binding energy difference for the mirror nuclei 3 H and 3 He and the low energy parameters of neutron-neutron and proton-proton scattering is established. The experimental values for the difference of 3 H and 3 He binding energies and the low energy proton-proton scattering parameters are used to obtain the values for the neutron-neutron scattering length a nn = -18.38(55) fm and the effective range r nn = 2.84(4) fm. The calculated neutron-neutron scattering length is in good agreement with one of the two well known and differing experimental values of this quantity.

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“…This cross section depends on the nn effective range parameter (r nn ) in the low-momentum expansion of the s-wave scattering amplitude [5]. However, early measurements did not determine r nn with high enough precision to examine the validity of charge symmetry in the NN interaction [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Neutron-neutron quasifree scattering in neutron-deuteron breakup at 10 MeV

et al. 2020

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New measurements of the neutron-neutron quasifree scattering cross section in neutron-deuteron breakup at an incident neutron energy of 10.0 MeV are reported. The experiment setup was optimized to evaluate the technique for determining the integrated beam-target luminosity in neutronneutron coincidence cross-section measurements in neutron-deuteron breakup. The measurements were carried out with a systematic uncertainty of ±5.6%. Our data are in agreement with theoretical calculations performed using the CD-Bonn nucleon-nucleon potential in the Faddeev formalism. The measured integrated cross section over the quasifree peak is 20.5 ± 0.5 (stat) ± 1.1 (sys) mb/sr 2 in comparison with the theory prediction of 20.1 mb/sr 2 . These results validate our technique for determining the beam-target luminosity in neutron-deuteron breakup measurements. *

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Neutron-neutron effective range from a comparison of n-n and n-p quasi-free scattering at 24 MeV

Cited by 18 publications

References 9 publications

Pion-Nucleus Interactions

Pion-Nucleus Interactions

Mirror nuclei 3H and 3He binding energies difference and low energy parameters of neutron-neutron scattering

Neutron-neutron quasifree scattering in neutron-deuteron breakup at 10 MeV

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