Inelastic p-4He scattering at 141 MeV

doi:10.1016/0375-9474(72)90925-6

Nuclear Physics A

Volume 181, Issue 1, 14 February 1972, Pages 329-336

https://doi.org/10.1016/0375-9474(72)90925-6 Get rights and content

Abstract

Inelastic p-⁴He scattering at 141±2 MeV has been investigated with a high-pressure cloud chamber filled with helium. Results are presented for the total cross sections of each reaction channel and the neutron spectra for the p(⁴He, pn)³He reaction.

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Citation Excerpt :
However, the model agrees well with the measurements at higher and lower energies. The differences between the reported measurements of the elastic cross section is not a focus in the current report, however we note that several measurement techniques are used in the various studies [25–34]. For absorption cross sections, the model agrees well with measurements at higher energies, however is larger below about 500 MeV/u with the largest differences with the estimates of Webber [1,36].
Light ion breakup cross sections are important for studies of cosmic ray interactions in the inter-stellar medium or radiation protection considerations of energy deposition in shielding and tissues. Abrasion cross sections for heavy ion reactions have been modeled using the Glauber model in the large mass limit or Eikonal form of the optical potential model. Here we formulate an abrasion model for ⁴He fragmentation on protons using the Glauber model avoiding the large mass limit and include a model for final state interactions. Calculations of energy dependent total, absorption, elastic and breakup cross sections for ⁴He into ³He or ³H with proton targets are shown to be in good agreement with experiments for energies from 100 to 100,000 MeV/u. The Glauber model for light nuclei with and without a large mass limit approximation is shown to be in fair agreement above 300 MeV/u, however important differences occur at lower energies.
Accurate universal parameterization of absorption cross sections III - light systems
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Our prior nuclear absorption cross sections model [R.K. Tripathi, F.A. Cucinotta, J.W. Wilson, Nucl. Instr. and Meth. B 117 (1996) 347; R.K. Tripathi, J.W. Wilson, F.A. Cucinotta, Nucl. Instr. and Meth. B 129 (1997) 11] is extended for light systems (A ⩽ 4) where either both projectile and target are light particles or one is light particle and the other is medium or heavy nucleus. The agreement with experiment is excellent for these cases as well. Present work in combination with our original model provides a comprehensive picture of absorption cross sections for light, medium and heavy systems. As a result the extended model can reliably be used in all studies where there is a need for absorption cross sections.
Extended parameterization of nuclear-reaction cross sections for few-nucleon nuclei
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We present a series of extended parametric fits to the S-factors and, therefore, the cross sections, for the light-nuclei fusion reactions D(D, p)T, D(D, n)³He, ³He(D, p)⁴He and T(D, n)⁴He. These fits constitute a family of continuous functions valid over a very wide range of energies (∼ 0 to ∼50 MeV) that may be used in reaction-rate and other calculations involving these reactions. Thus, they have a much more extended range of applicability compared to previous similar fits.
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1985, Nuclear Physics, Section A
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^†: Now at the Department of Physics, Hull University.

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Nuclear Physics A

Abstract

References (17)

Nucl. Instr.

Phys. Lett.

Phys. Lett.

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

The three-body problem

Phys. Rev.

Cited by (23)

Study of total, absorption, and <sup>3</sup>He and <sup>3</sup>H production cross sections in <sup>4</sup>He-proton collisions

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Extended parameterization of nuclear-reaction cross sections for few-nucleon nuclei

A semi-classical model for breakup reactions of light nuclei: <sup>4</sup>He(p, pn)<sup>3</sup>He

Composite particle emission following π<sup>-</sup> absorption in <sup>6</sup>Li:. Test of reaction mechanisms

Emission rate of preformed α particles in preequilibrium decay