Search
Now showing items 1-6 of 6
Q(EC) values of the superallowed beta emitters (10)C, (34)Ar, (38)Ca, and (46)V
(American Physical Society, 2011)
The Q(EC) values of the superallowed beta(+) emitters (10)C, (34)Ar, (38)Ca, and (46)V have been measured with the JYFLTRAP Penning-trap mass spectrometer to be 3648.12(8), 6061.83(8), 6612.12(7), and 7052.44(10) keV, ...
Precise half-life measurements for the superallowed beta(+) emitters Ar-34 and Cl-34
(American Physical Society, 2006)
To contribute meaningfully to any test of the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix, the measured ft value of a superallowed 0(+)-> 0(+) beta(+) transition must be obtained to a precision of 0.1% or better. ...
Branching ratios for the beta decay of Na-21
(American Physical Society, 2006)
We have measured the beta-decay branching ratio for the transition from Na-21 to the first excited state of Ne-21. A recently published test of the standard model, which was based on a measurement of the beta-nu correlation ...
High precision measurements of Na-26 beta(-) decay
(American Physical Society, 2005)
High-precision measurements of the half-life and beta-branching ratios for the beta(-) decay of Na-26 to Mg-26 have been measured in beta-counting and gamma-decay experiments, respectively. A 4 pi proportional counter and ...
High precision branching ratio measurement for the superallowed beta decay of Rb-74: A prerequisite for exacting tests of the standard model
(American Physical Society, 2003)
Nonanalog Fermi and Gamow-Teller branches in the superallowed beta decay of Rb-74 have been investigated using gamma-ray and conversion-electron spectroscopy. Nine observed transitions, in conjunction with a recent shell ...
Precise half-life measurement of the superallowed beta(+) emitter (26)Si
(American Physical Society, 2010)
We measured the half-life of the superallowed 0(+) -> 0(+) beta(+) emitter (26)Si to be 2245.3(7) ms. We used pure sources of (26)Si and employed a high-efficiency gas counter, whichwas sensitive to positrons from both ...