Accession Number : AD0654155

Title :   A STUDY OF LEVELS IN 23MG,

Corporate Author : CALIFORNIA INST OF TECH PASADENA

Personal Author(s) : Dubois,J. ; Earwaker,L. G.

Report Date : 1966

Pagination or Media Count : 50

Abstract : Levels in 23Mg with excitation energies up to 6.8 MeV have been investigated by magnetic analysis of the alpha particles from the reaction 24Mg(3He, alpha)23Mg at bombarding energies between 6 and 12 MeV. Between 4.4 and 6.8-MeV excitation energy, 16 new levels were found in 23Mg. Angular distributions of the emitted alpha particles were measured and from DWBA analysis l-values for the picked up neutrons were obtained. The particle-gamma angular correlation method of Litherland and Ferguson was used to obtain additional information on the spin assignments of the levels as well as branching and mixing ratios of the gamma-ray transitions. The following spin and parity assignments have been established: 0.451 MeV 5/2(+), 2.048 MeV 7/2 (3/2), 2.356 MeV 1/2(+), 2.768 MeV (1/2, 3/2)(-), 2.904 MeV (3/2, 5/2)(+), 3.792 MeV 3/2(-), 4.353 MeV 1/2(+), 5.289 MeV (3/2, 5/2)(+), and 5.992 MeV (1/2, 3/2)(-). The experimental results are compared with those obtained for 23Na and the predictions of the collective model. (Author)

Descriptors :   (*NUCLEAR ENERGY LEVELS, *MAGNESIUM), ALPHA PARTICLES, NUCLEAR MODELS, EXPERIMENTAL DATA, NUCLEAR REACTIONS, NUCLEAR SPINS, PARITY, GAMMA RAY SPECTRA

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE