States in O20 below 6 MeV excitation via the O18(t,p) O20 reaction

A. A. Pilt, M. A. M. Shahabuddin, and J. A. Kuehner
Phys. Rev. C 19, 20 – Published 1 January 1979
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Abstract

Angular distributions have been measured for the O18(t,p) O20 reaction at a bombarding energy of 15.0 MeV. Nine excited states below 6.02 MeV were observed. Comparison with microscopic two-particle distorted-wave Born approximation calculations yielded the following new Jπ assignments (Ex in MeV, Jπ): 5.382, 0+; 5.603, 2+; 6.02, 4+. Tentative assignments of (1, 2+, 3) and (1, 2+) were made to levels at 5.00 and 5.22 MeV, respectively. Spins of 2+, 4+, 2+, and 0+ to the levels at 1.674, 3.568, 4.065, and 4.446 MeV were confirmed. The experimental spectrum of states below 6 MeV is compared with the results of an (sd)4 shell-model calculation using the Preedom-Wildenthal interaction matrix elements. Identification of possible core-excited states in O20 is discussed.

NUCLEAR REACTIONS C12(t, p), O16,18(t, p), E=15.0 MeV; measured σ(Ep,θ). O20 deduced levels, J. Enriched target, DWBA analysis, shell model calculation.

  • Received 14 August 1978

DOI:https://doi.org/10.1103/PhysRevC.19.20

©1979 American Physical Society

Authors & Affiliations

A. A. Pilt, M. A. M. Shahabuddin, and J. A. Kuehner

  • Tandem Accelerator Laboratory, McMaster University, Hamilton, Ontario, Cańada L8S 4K1

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Vol. 19, Iss. 1 — January 1979

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