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Autor:
Nica, N., Hardy, J. C., Iacob, V. E., Horvat, V., Park, H. I., Werke, T. A., Glennon, K. J., Folden III, C. M., Sabla, V. I., Bryant, J. B., James, X. K., Trzhaskovskaya, M. B.
Publikováno v:
Phys. Rev. C 98, 054321 (2018)
Neutron-activated sources of $^{103}$Ru and $^{103}$Pd both share the isomeric first-excited state in $^{103}$Rh as a daughter product. From independent measurements of both decays, we have measured the $K$-shell and total internal conversion coeffic
Externí odkaz:
http://arxiv.org/abs/1810.04802
Autor:
Iacob, V. E., Hardy, J. C., Chen, L., Horvat, V., Bencomo, M., Nica, N., Park, H. I., Roeder, B. T., Saastamoinen, A.
Publikováno v:
Phys. Rev. C 97, 035501 (2018)
We have measured the half-life of 30S, the parent of a superallowed 0+-to-0+ beta transition, to high precision using very pure sources and a 4pi proportional gas counter to detect the decay positrons. Our result for the half-life is 1.17992(34) s. A
Externí odkaz:
http://arxiv.org/abs/1802.00406
We have measured the K-shell internal conversion coefficient, alpha_K, for the 88.2-keV M4 transition from the 106-day isomer to the ground state in 127Te to be 484(6). When compared with Dirac-Fock calculations of alpha_K, this result agrees well wi
Externí odkaz:
http://arxiv.org/abs/1702.07668
Autor:
Park, H. I., Hardy, J. C., Iacob, V. E., Bencomo, M., Chen, L., Horvat, V., Nica, N., Roeder, B. T., McCleskey, E., Tribble, R. E., Towner, I. S.
We present the full description of a measurement of the branching ratios for the beta-decay of 38Ca. This decay includes five allowed 0+ --> 1+ branches and a superallowed 0+ --> 0+ one. With our new result for the latter, we determine its ft value t
Externí odkaz:
http://arxiv.org/abs/1503.01367
Autor:
Shidling, P. D., Melconian, D., Behling, S., Fenker, B., Hardy, J. C., Iacob, V. E., McCleskey, E., McCleskey, M., Mehlman, M., Park, H. I., Roeder, B. T.
The half-life of \tsups{37}K has been measured to be $1.23651(94)~\mathrm{s}$, a value nearly an order of magnitude more precise than the best previously reported. The $\beta^+$ decay of \tsups{37}K occurs mainly via a superallowed branch to the grou
Externí odkaz:
http://arxiv.org/abs/1407.1742
Autor:
Park, H. I., Hardy, J. C., Iacob, V. E., Bencomo, M., Chen, L., Horvat, V, Nica, N., Roeder, B. T., Simmons, E., Tribble, R. E., Towner, I. S.
We report the first branching-ratio measurement of the superallowed 0+-to-0+ beta transition from 38Ca. The result, 0.7728(16), leads to an ft value of 3062.3(68)s with a relative precision of +/-0.2%. This makes possible a high-precision comparison
Externí odkaz:
http://arxiv.org/abs/1401.2114
Autor:
Nica, N., Hardy, J. C., Iacob, V. E., Bencomo, M., Horvat, V., Park, H. I., Maguire, M., Miller, S., Trzhaskovskaya, M. B.
We have measured the K-shell internal conversion coefficient, alpha-K, for the 65.7-keV M4 transition in 119Sn to be 1621(25). This result agrees well with Dirac-Fock calculations in which the effect of the K-shell atomic vacancy is accounted for, an
Externí odkaz:
http://arxiv.org/abs/1312.3883
Autor:
Park, H. I., Hardy, J. C., Iacob, V. E., Chen, L., Goodwin, J., Nica, N., Simmons, E., Trache, L., Tribble, R. E.
The half-life of 46V has been measured to be 422.66(6) ms, which is a factor of two more precise than the best previous measurement. Our result is also consistent with the previous measurements, with no repeat of the disagreement recently encountered
Externí odkaz:
http://arxiv.org/abs/1112.3614
Autor:
Melconian, D., Triambak, S., Bordeanu, C., García, A., Hardy, J. C., Iacob, V. E., Nica, N., Park, H. I., Tabacaru, G., Trache, L., Towner, I. S., Tribble, R. E., Zhai, Y.
Background: Models to calculate small isospin-symmetry-breaking effects in superallowed Fermi decays have been placed under scrutiny in recent years. A stringent test of these models is to measure transitions for which the correction is predicted to
Externí odkaz:
http://arxiv.org/abs/1112.2748