Quasideuteron configurations in 46V and 58Cu

The data on low spin states in the odd-odd nuclei 46V and 58Cu investigated with the 46Ti(p,ngamma)46V, 32S(16O,pn)46V and 58Ni(p,ngamma)58Cu reactions at the FN-TANDEM accelerator in Cologne are reported. The states containing large quasideuteron components are identified from the strong isovector M1 transitions, from shell model calculations and from experimental data for low-lying states.Comment: 6 pages, 3 figures, proceedings of the "Nuclear Structure 2000" conference, East Lansing, Michigan, USA, August 15-19, 2000; to appear in Nucl. Phys.

Low-Spin Spectroscopy of 50Mn

The data on low spin states in the odd-odd nucleus 50Mn investigated with the 50Cr(p,ngamma)50Mn fusion evaporation reaction at the FN-TANDEM accelerator in Cologne are reported. Shell model and collective rotational model interpretations of the data are given.Comment: 7 pages, 2 figures, to be published in the proceedings of the "Bologna 2000 - Structure of the Nucleus at the Dawn of the Century" Conference, (Bologna, Italy, May 29 - June 3, 2000

Isospin mixing in the 4

The T = 1 admixture into the T = 0 member of a recently discovered $J^\pi = 4^{ + }$ isospin-doublet in 54Co is obtained from the measured electromagnetic E2/M1 multipole mixing ratio, $\delta = 0.12(4)$ of the $T = 0, 4^{ + } \rightarrow T = 0, 3^{ + }$ transition. Combining these data with shell model calculations for strong isovector M1 and isoscalar E2 electromagnetic matrix elements one obtains a value for the T = 1 admixture into the T = 0, 4 + state of $0.23_{-0.10}^{ + 0.29}\%$. The corresponding mixing matrix element in the 4 + doublet is $V_{\rm mix} = 10$ keV