Elsevier

Nuclear Physics A

Volume 301, Issue 3, 5 June 1978, Pages 463-476
Nuclear Physics A

Structure of 14C from 12C(t, p)

https://doi.org/10.1016/0375-9474(78)90062-3Get rights and content

Abstract

The reaction 12C(t, p)14C has been investigated with an 18 MeV triton beam. Twenty energy levels of 14C were identified up to 13 MeV excitation. Angular distributions were measured and compared with DWBA calculations. A previously unreported 0+ level at 9.75 MeV was observed; it undoubtedly corresponds to the second predominantly sd shell 0+ state in 14C. Additional spin and parity assignments have been made in the present work: 9.81 MeV, (1); 10.43 MeV, 2+; 10.50 MeV, (3); 10.74 MeV, 4+; 11.40 MeV, 1; 11.67 MeV, (1); 11.73 MeV, (5); 12.58 MeV, (2+, 3); 12.87 MeV. 2+, 3; and 12.96 MeV, (1); none of which had a definite spin and parity assignment previously. Our results confirm the previous information on the level structure of 14C below 8.5 MeV. The cross section for the unnatural parity state at 7.34 MeV, Jπ = 2, is well reproduced by a two-step reaction calculation. The results are compared with the predictions of a weak coupling model.

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Work supported by the National Science Foundation.

††

On leave from the Department of Physics, Ben-Gurion University, Beer-Sheva, Israel.

†††

Presently at Oxford University on leave from Univ. of Penna.

Present address: Analytic Services Inc., Falls Church, Virginia, 22041.

‡‡

Present address:Westinghouse Electric Corp., Bettis Atomic Power Lab., PO BOX 79, West Mifflin, Pa. 15122.

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