Precise half-life measurement of the superallowedemitterCa
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The half-life of 38Ca, a TZ=-1 superallowed 0 +0++ emitter, has been measured to be 443.77(36) ms. In our experiment, pure sources of 38Ca were produced and the decay positrons were detected in a high-efficiency 4 proportional gas counter. Since the + decay of 38Ca feeds 38Km, which is itself a superallowed + emitter, the data were analyzed as a linked parent-daughter decay. Our result, with a precision of 0.08%, is a factor of 5 improvement on the best previous result. 2011 American Physical Society.
author list (cited authors)
Park, H. I., Hardy, J. C., Iacob, V. E., Banu, A., Chen, L., Golovko, V. V., ... Tribble, R. E.
complete list of authors
Park, HI||Hardy, JC||Iacob, VE||Banu, A||Chen, L||Golovko, VV||Goodwin, J||Horvat, V||Nica, N||Simmons, E||Trache, L||Tribble, RE