Elsevier

Nuclear Physics

Volume 88, Issue 1, November 1966, Pages 81-96, IN1-IN4, 97-127
Nuclear Physics

A study of the reaction 10B(3He, pααα)

https://doi.org/10.1016/0029-5582(66)90454-8Get rights and content

Abstract

The 10B(3He, pααα) reaction has been studied at bombarding energies of 2.45 and 6.00 MeV. These studies indicate that the 10B+3He system proceeds to the four-body final state pααα primarily by sequential decay processes. Evidence has been obtained for the occurence of the following energetically allowed processes:

  • 1.

    (i) 10B+3Hep+12C, 12C→α1+8Be, 8Be→α23,

  • 2.

    (ii) 10B+3He→α1+9B, 9Bp+8Be, 8Be23,

  • 3.

    (iii) 10B+3He→α1+9B, 9B→α2+5Li, 5Li→α3+p,

  • 4.

    (iv) 10B+3He5Li+8Be, 5Lip1, 8Be→α23.

Spectroscopic information for many of the levels of the various intermediate systems has been obtained. The results are consistent with the following Jπ-assignments to the designated levels: (the decimal number indicates the energy of excitation of the level in MeV) 9B: 2.34, 52 2.8, 12. 12C: 16.57, natural parity; 16.11, 2+; 15.11, 1+; 14.02, J≧2, natural parity; 13.34, J≧1, unnatural parity; 12.71, 1+; 11.83, 2; 10.84, 1; 9.64, 3; 7.66, 0+. Many of the above assignments are based primarily on previous work.

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    ††

    Research supported in part by the U.S. Atomic Energy Commission. The computer time used was supported in part by the National Aeronautics and Space Administration research grant NsG-398 to the Computer Science Center of the University of Maryland and in part by the G-2161 to University of Iowa from the National Science Foundation.

    Now at the University of Iowa, Iowa City, Iowa.

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