High - precision half - life determination for the superallowed β + emitter 62 Ga
نویسندگان
چکیده
G. F. Grinyer,1,* P. Finlay,1 C. E. Svensson,1 G. C. Ball,2 J. R. Leslie,3 R. A. E. Austin,4 D. Bandyopadhyay,1,† A. Chaffey,4 R. S. Chakrawarthy,2 P. E. Garrett,1,2 G. Hackman,2 B. Hyland,1 R. Kanungo,2,‡ K. G. Leach,1 C. M. Mattoon,5 A. C. Morton,2 C. J. Pearson,2 A. A. Phillips,1 J. J. Ressler,6 F. Sarazin,5 H. Savajols,2 M. A. Schumaker,1 and J. Wong1 1Department of Physics, University of Guelph, Guelph, Ontario, Canada N1G 2W1 2TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3 3Department of Physics, Queen’s University, Kingston, Ontario, Canada K7L 3N6 4Department of Astronomy and Physics, Saint Mary’s University, Halifax, Nova Scotia, Canada B3H 3C3 5Department of Physics, Colorado School of Mines, Golden, Colorado, 80401 USA 6Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 (Received 20 August 2007; published 29 January 2008)
منابع مشابه
Direct mass measurements on the superallowed emitter 74Rb and its daughter 74Kr: isospin-symmetry-breaking correction for standard-model tests.
The decay energy of the superallowed beta decay 74Rb(beta+)74Kr was determined by direct Penning trap mass measurements on both the mother and the daughter nuclide using the time-of-flight resonance technique and was found to be Q=10 416.8(4.5) keV. The exotic nuclide 74Rb, with a half-life of only 65 ms, is the shortest-lived nuclide on which a high-precision mass measurement in a Penning trap...
متن کاملar X iv : n uc l - ex / 0 51 20 10 v 1 7 D ec 2 00 5 Q - value of the superallowed β decay of 62 Ga
Masses of the radioactive isotopes Ga, Zn and Cu have been measured at the JYFLTRAP facility with a relative precision of better than 1.8× 10. A QEC value of (9181.07 ± 0.54) keV for the superallowed decay of Ga is obtained from the measured cyclotron frequency ratios of Ga—Zn, Ga—Ni and Zn—Ni ions. The resulting Ft-value supports the validity of the conserved vector current hypothesis (CVC). T...
متن کاملuc l - ex / 0 51 20 10 v 2 1 2 D ec 2 00 5 Q - value of the superallowed β decay of 62 Ga
Masses of the radioactive isotopes Ga, Zn and Cu have been measured at the JYFLTRAP facility with a relative precision of better than 1.8× 10. A QEC value of (9181.07 ± 0.54) keV for the superallowed decay of Ga is obtained from the measured cyclotron frequency ratios of Ga—Zn, Ga—Ni and Zn—Ni ions. The resulting Ft-value supports the validity of the conserved vector current hypothesis (CVC). T...
متن کاملHigh precision half - life measurement of the superallowed β - emitter 38 Ca
We have now analyzed the results obtained from our half-life measurement of Ca. In that measurement, we produced Ca via the H(K, 2n) reaction at a primary beam energy of 30A MeV. A 99%-pure Ca beam was obtained at the focal plane of the MARS spectrometer, from which it exited the vacuum system through a 50-μm thick Kapton window, passed through a 0.3-mm-thick BC404 scintillator and a stack of a...
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