Elsevier

Nuclear Physics

Volume 65, Issue 4, April 1965, Pages 641-646
Nuclear Physics

An isospin 32 level of Be9

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Abstract

A state of Be9 has been found at an excitation energy of 14.392±0.005 MeV, with a width less than 5 keV. The state is formed in the reaction Li7(He3, p)Be9 and corresponds closely in energy to the expected analogue of the ground state of Li9. These facts, together with the small width, suggest an assignment of T = 32. The angular distribution of protons corresponding to the 14.39 MeV state is nearly symmetric about 90° in the centre-of-mass with maxima at 40° and 150°. The 90° differential cross sections are approximately the same for 6.5 and 10 MeV He3, with a minimum value between these energies. The total cross sections are 10−2+5 mb for 10 MeV He3 and 7.5−2+4 mb for 7.5 MeV.

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Cited by (7)

  • A=9 isospin quartet

    1974, Physical Review C
  • Mass and half-life of C9

    1971, Physical Review C
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