Abstract
The /beta/2) decay of 22 h /sup 43/K (J/sup /pi// = (3/2/sup +/) was reexamined with the main motive of determining the first-forbidden /beta/2) branches to the (3/2/sup -/ and (5/2/sup -/ states more accurately. The branch to the (5/2/sup -/ state at 373 keV was established as 0.9(6)% as opposed to a previous limit of <3%. Other /beta/2) and /gamma/ branching ratios and /gamma/-ray energies were determined with considerably improved accuracy. Shell-model calculations in full (2s,1d)/sup 24/(1f,2p)/sup 3/ and (2s,1d)/sup 23/(1f,2p)/sup 4/ configurational spaces were carried out using the WBMB spherical shell-model interaction. Energy spectra, nucleon pickup spectroscopic factors from /sup 44/Ca, two-nucleon transfer strengths from /sup 41/K, and /gamma/-ray transition rates were calculated for both /sup 43/K and /sup 43/Ca as well as allowed and first-forbidden decays for the known branches in /sup 43/K(/beta/2)) /sup 43/Ca. Results are compared to experiment.
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