Neutron-proton differential cross section measurements for En from 28 to 75 MeV

Benck, Sylvie; Slypen, I.; Corcalciuc, V.; Meulders, Jean‐Pierre

doi:10.1016/s0375-9474(96)00484-8

Cited by 29 publications

(33 citation statements)

References 21 publications

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“…The (n, xp), (n, xd) DDXs of aluminum and carbon were measured at En =65 and 75 Me V using conventional L1E-E counter telescopes with 7 Li(p, n) source at TIARA. The spectra at 12° were obtained by employing an annular geometry.…”

Section: Discussionmentioning

confidence: 99%

“…The background from surrounding air was not negligible, thus sample-out data had to be measured. The experimental time was 37 h with 1.2-2.0 µA beam currents on the 7 Li target, and rv20% of the time was shared to sample-out measurements.…”

Section: Methodsmentioning

confidence: 99%

“…The DDX data were obtained by the following processes: (1) particle identification, (2) selection of events due to 7 Li(p, n) peak neutrons, (3) backgrounds subtraction, ( 4) energy scale determination, ( 5) energy loss correction and (6) determination of cross sections by neutron flux, solid angle and number of sample atoms.…”

Section: Data Reductionmentioning

confidence: 99%

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Measurements of (n,xp), (n,xd) Double Differential Cross Sections of Carbon and Aluminum for 65 and 75 MeV Neutrons

Nauchi

Baba

Sanami

et al. 1999

Journal of Nuclear Science and Technology

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Double differential (n, xp), (n, xd) cross sections of carbon and aluminum were measured for 65 and 75 MeV neutrons at angles between 12° and 70° using L::.E-E telescopes at a 7 Li(p, n) neutron source facility at TIARA. The data at 12° were obtained by employing an annular geometry. The telescopes consisting of SSD and NaI(Tl) scintillator, experimental methods and the data reduction procedures are presented as well as the results. The carbon data are compared favorably with existing experimental data. The (n, xp) spectra of both carbon and aluminum agreed fairly well with theoretical calculations based on the intra-nuclear cascade model and the multi-step Hauser-Feshbach model including preequilibrium effects, but the (n, xd) spectra differ significantly from those calculations.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Measurements of (n,xp), (n,xd) Double Differential Cross Sections of Carbon and Aluminum for 65 and 75 MeV Neutrons

Nauchi

Baba

Sanami

et al. 1999

Journal of Nuclear Science and Technology

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“…Note that Table XIII is not a list of all np data published after 1992. Not listed are four measurements of np differential cross sections [67][68][69][70]. We have examined these data and found in each case that they produced an improbably high χ 2 when compared to current phase shift analyses [42,45].…”

Section: Nucleon-nucleon Scatteringmentioning

confidence: 99%

High-precision, charge-dependent Bonn nucleon-nucleon potential

2001

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We present a charge-dependent nucleon-nucleon (N N ) potential that fits the world proton-proton data below 350 MeV available in the year of 2000 with a χ 2 per datum of 1.01 for 2932 data and the corresponding neutron-proton data with χ 2 /datum = 1.02 for 3058 data. This reproduction of the N N data is more accurate than by any phase-shift analysis and any other N N potential. The charge-dependence of the present potential (that has been dubbed 'CD-Bonn') is based upon the predictions by the Bonn Full Model for charge-symmetry and charge-independence breaking in all partial waves with J ≤ 4. The potential is represented in terms of the covariant Feynman amplitudes for one-boson exchange which are nonlocal. Therefore, the off-shell behavior of the CD-Bonn potential differs in a characteristic and well-founded way from commonly used local potentials and leads to larger binding energies in nuclear few-and many-body systems, where underbinding is a persistent problem.

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“…Particular attention deserve the TUNL data on ∆σ L and ∆σ T between 5 and 20 MeV [91] which made it possible to pin down the ǫ 1 mixing parameter with unprecedented precision. Table 9 includes several new measurements of np differential cross sections (σ), with the largest sets produced by the Freiburg group [100] (871 data between 200 and 350 MeV), the Uppsala group [105,98] (92 and 162 MeV, 109 data), and at Louvainla-Neuve [96] (84 data between 29 and 73 MeV). In table 10 we show the χ 2 /datum for the reproduction of these data sets by some recent PSA and NN potentials.…”

Section: Neutron-proton Datamentioning

confidence: 99%

9. The nucleon-nucleon interaction

Brown¹,

Jackson²

Models of Hadron Structure Based on Quantum Chromodynamics

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Abstract. We review the major progress of the past decade concerning our understanding of the nucleon-nucleon interaction. The focus is on the low-energy region (below pion production threshold), but a brief outlook towards higher energies is also given. The items discussed include charge-dependence, the precise value of the πN N coupling constant, phase shift analysis and high-precision NN data and potentials. We also address the issue of a proper theory of nuclear forces. Finally, we summarize the essential open questions that future research should be devoted to.

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Neutron-proton differential cross section measurements for En from 28 to 75 MeV

Cited by 29 publications

References 21 publications

Measurements of (n,xp), (n,xd) Double Differential Cross Sections of Carbon and Aluminum for 65 and 75 MeV Neutrons

Measurements of (n,xp), (n,xd) Double Differential Cross Sections of Carbon and Aluminum for 65 and 75 MeV Neutrons

High-precision, charge-dependent Bonn nucleon-nucleon potential

9. The nucleon-nucleon interaction

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