Elsevier

Nuclear Physics A

Volume 112, Issue 1, 3 May 1968, Pages 47-64
Nuclear Physics A

Deuteron capture in 3He

https://doi.org/10.1016/0375-9474(68)90218-2Get rights and content

Abstract

Gamma-ray spectra from the 3He(d, γ)5Li reaction, measured over the range Ed = 0.2−1.2 MeV with a high resolution NaI two-crystal pair spectrometer, consist of transitions to the 5Li ground state (Γ = 2.6±0.4 MeV) and first excited state (Ex = 7.5±1.0 MeV). The intensity ratios of the two lines is 1.00±0.15 and 1.9±0.4 at Ed = 480 and 1025 keV, respectively.

The 90° ground-state transition yield curve shows a resonance at Ed = 450 keV (Γγ0 = 5±1 eV) with a total cross section of 21±4 μb. At higher energies the reaction proceeds mainly through non-resonant capture.

The ground-state angular distributions were measured at 480 and 1025 keV.

The results are consistent with the assumption of pure s-wave capture through a resonance reaction with channel spin 32 and a direct reaction with channel spin 12. The measured spin orbit splitting of the two p-levels in 5Li agrees within experimental errors with the value extrapolated from measured spin-orbit splitting energies of higher-Z nuclei.

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    Now at Linear Accelerator Laboratory, University of Saskatchewan, Saskatoon,Canada.

    ††

    Now at Laboratoire de Physique Nucléaire, Université de Montreal, Montreal, Canada.

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