Browsing by Author "Hardy, John C."
Now showing items 1-20 of 41
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Macdonald, J. A.; Cerny, J.; Hardy, John C.; HARNEY, HL; Bacher, A. D.; Plattner, G. R. (American Physical Society, 1974)
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Hyman, BC; Iacob, VE; Azhari, A.; Gagliardi, Carl A.; Hardy, John C.; Mayes, VE; Neilson, RG; Sanchez-Vega, M.; Tang, X.; Trache, L.; Tribble, Robert E. (American Physical Society, 2003)We report a study of the beta decay of Ga-62, whose dominant branch is a superallowed 0(+)-->0(+) transition to the ground state of Zn-62. We find the total half-life to be 115.84+/-0.25 ms. This is the first time that the ...
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Iacob, V. E.; Zhai, Y.; Al-Abdullah, T.; Fu, C.; Hardy, John C.; Nica, N.; Park, H. I.; Tabacaru, G.; Trache, L.; Tribble, Robert E. (American Physical Society, 2006)We present the first study of the beta decay of Al-23 undertaken with pure samples. The study was motivated by nuclear astrophysics questions. Pure samples of Al-23 were obtained from the momentum achromat recoil separator ...
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Esterl, J. E.; Allred, D.; Cerny, J.; Sextro, R. G.; Hardy, John C. (American Physical Society, 1972)
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Iacob, V. E.; Hardy, John C.; Gagliardi, Carl A.; Goodwin, J.; Nica, N.; Park, H. I.; Tabacaru, G.; Trache, L.; Tribble, Robert E.; Zhai, Y.; Towner, I. S. (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 ...
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Towner, IS; Hardy, John C. (American Physical Society, 2002)The measured ft values for superallowed 0(+)-->0(+) nuclear beta decay can be used to obtain the value of the vector coupling constant and thus to test the unitarity of the Cabibbo-Kobayashi-Maskawa matrix. An essential ...
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Towner, I. S.; Hardy, John C. (American Physical Society, 2010)We present a test with which to evaluate the calculated isospin-symmetry-breaking corrections to superallowed 0(+) -> 0(+) nuclear beta decay. The test is based on the corrected experimental Ft values being required to ...
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Xu, SW; Guo, J. S.; Yuan, S. G.; Liu, M. Q.; Hagberg, E.; Koslowsky, V. T.; Hardy, John C.; Dyck, G.; Schmeing, H. (American Physical Society, 1992)
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Schrewe, U. J.; Hagberg, E.; Schmeing, H.; Hardy, John C.; Koslowsky, V. T.; Sharma, KS; Clifford, E. T. H. (American Physical Society, 1982)
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Hagberg, E.; Sun, X. J.; Koslowsky, V. T.; Schmeing, H.; Hardy, John C. (American Physical Society, 1992)
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Saastamoinen, A.; Trache, L.; Banu, A.; Bentley, M. A.; Davinson, T.; Hardy, John C.; Iacob, V. E.; McCleskey, M.; Roeder, B. T.; Simmons, E.; Tabacaru, G.; Tribble, Robert E.; Woods, P. J.; Aysto, J. (American Physical Society, 2011)The beta-delayed gamma and proton decay of (23)Al has been studied with an alternative detector setup at the focal plane of the momentum achromat recoil separator MARS at Texas AandM University. We could detect protons ...
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Hardy, John C.; Schmeing, H.; Benenson, W.; Crawley, G. M.; Kashy, E.; Nann, H. (American Physical Society, 1974)
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Nica, N.; Hardy, John C.; Iacob, V. E.; Goodwin, J.; Balonek, C.; Hernberg, M.; Nolan, J.; Trzhaskovskaya, M. B. (American Physical Society, 2009)We have measured the K-shell internal conversion coefficient, alpha(K), for the 346.5-keV M4 transition in (197)Pt to be 4.23(7). This result differs from a previous value, which disagreed significantly from theory. Our ...
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Goodwin, J. R.; Golovko, V. V.; Iacob, V. E.; Hardy, John C. (American Physical Society, 2009)We have measured the half-life of the electron-capture (ec) decay of (97)Ru in a metallic environment, both at low temperature (19 K), and also at room temperature. We find the half-lives at both temperatures to be the ...
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Piechaczek, A.; Zganjar, EF; Ball, GC; Bricault, P.; D'Auria, JM; Hardy, John C.; Hodgson, DF; Iacob, V.; Klages, P.; Kulp, WD; Leslie, JR; Lipoglavsek, M.; Macdonald, JA; Mak, HB; Moltz, D. M.; Savard, G.; von Schwarzenberg, J.; Svensson, CE; Towner, IS; Wood, JL. (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 ...
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Grinyer, GF; Svensson, CE; Andreoiu, C.; Andreyev, AN; Austin, RAE; Ball, GC; Chakrawarthy, RS; Finlay, P.; Garrett, PE; Hackman, G.; Hardy, John C.; Hyland, B.; Iacob, VE; Koopmans, KA; Kulp, WD; Leslie, JR; Macdonald, JA; Morton, AC; Ormand, WE; Osborne, CJ; Pearson, CJ; Phillips, AA; Sarazin, F.; Schumaker, MA; Scraggs, HC; Schwarzenberg, J.; Smith, MB; Valiente-Dobon, JJ; Waddington, JC; Wood, JL; Zganjar, EF. (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 ...
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Park, Hyo-In (2012-10-19)As a part of our program to test the unitarity of the Cabibbo-Kobayashi-Maskawa matrix, the decay of the superallowed 0⁺ --> 0⁺ beta emitters ³⁸Ca and ⁴⁶V has been studied in this dissertation. For ³⁸Ca, the half-life, ...
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Improved calculation of the isospin-symmetry-breaking corrections to superallowed Fermi beta decay Towner, I. S.; Hardy, John C. (American Physical Society, 2008)We report new shell-model calculations of the isospin-symmetry-breaking correction delta(C) to superallowed 0(+)-> 0(+) nuclear beta decay. The most important improvement is the inclusion of core orbitals, which are ...
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Nica, N.; Hardy, John C.; Iacob, V. E.; Balonek, C.; Trzhaskovskaya, M. B. (American Physical Society, 2008)Recently we measured the ratio of K-shell internal conversion coefficients, alpha(K), for the 127.5-keV E3 transition in (134)Cs and the 661.7-keV M4 transition in (137)Ba. We here report a measurement of the 165.9-keV M1 ...
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Hardy, John C.; Esterl, J. E.; Sextro, R. G.; Cerny, J. (American Physical Society, 1971)