A study of the 2H(3He, 4He)1H reaction with a polarised 3He beam at 27 and 33 MeV

doi:10.1016/0375-9474(79)90150-7

Nuclear Physics A

Volume 325, Issue 1, 13 August 1979, Pages 45-62

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Abstract

Angular distributions of the ³He analysing power and differential cross section were measured for the ²H(³He, ⁴He)¹H reaction at incident ³He lab energies of 27 and 33 MeV. Analysis of this and other data suggest the presence of a broad resonance, or resonances, around 28 MeV excitation in ⁵Li. The evidence for the dominant M-matrix elements involving a change in channel spin (i.e. the ΔS = −1 rule) is examined and also the question is investigated as to whether the data can be consistently explained without requiring tensor forces in the interaction.

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The angular distributions of the analysing power and the relative cross-sections for the elastic scattering of polarized $^{3} He$ nuclei by $^{2} H$ have been measured at incident $^{3} He$ energies of 22.5, 24, 27, 30 and 33 MeV. The data, considered in terms of fitted Legendre polynomials, clearly show a structure near 30 MeV $^{3} He$ energy which is more striking for odd L coefficients. In addition, our data, along with other data on the differential cross sections and on the analysing power for the scattering of polarized $^{2} H$ , have been analysed for the phase shifts and mixing parameters in the S-matrix description. The phase shifts selected are compared with those from resonating-group theory calculations. The prominent residual differences were attributed to further resonances which involve the formation of $^{5} Li$ nuclei at high excitation energy. Finally a level scheme is compared with the predictions of a multi-particle, multi-shell model calculation.
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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^†: Present address: Department of Physics, Hacettepe University, Beytepe, Ankara, Turkey.

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Nuclear Physics A

Abstract

References (40)

Nucl. Phys.

Nucl. Phys.

Prog. Phys.

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Tafeln höherer Funktionen

Helv. Phys. Acta

ETH Zürich report

Phys. Lett.

Los Alamos Scientific Laboratory report, LA-4492-MS

Nucl. Phys.

Nucl. Phys.

Phys. Lett.

Phys. Rev.

Z. Phys.

Cited by (6)

The elastic scattering of polarized <sup>3</sup>He by <sup>2</sup>H at 22.5, 24, 27, 30 and 33 MeV

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The <sup>2</sup>H(<sup>3</sup>He, <sup>3</sup>He p)n reaction with 33-MeV polarized <sup>3</sup>He ions

The reaction <sup>3</sup>He(<sup>6</sup>Li)p<sup>8</sup>Be(g.s.) at 21 MeV and relationships between analyzing powers and polarization

Polarimetry for <sup>3</sup>He Ion Beams from Laser–Plasma Interactions

Cross section and vector analyzing power iT11 of the processes He3(d,d)He3 (d,p)He4 between 15 and 40 MeV