Search Results - "Iacob, V E"

Experimental validation of the largest calculated isospin-symmetry-breaking effect in a superallowed Fermi decay by 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

“…A precision measurement of the γ yields following the β decay of (32)Cl has determined its isobaric-analogue branch to be (22.47(-0.18)(+0.21))%. Since it is…”
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Precise efficiency calibration of an HPGe detector up to 3.5 MeV, with measurements and Monte Carlo calculations by Helmer, R.G., Nica, N., Hardy, J.C., Iacob, V.E.

“…Previously we used relative and absolute efficiency measurements combined with Monte Carlo calculations to define the efficiency of an HPGe gamma-ray detector…”
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Precise efficiency calibration of an HPGe detector: source measurements and Monte Carlo calculations with sub-percent precision by Hardy, J.C., Iacob, V.E., Sanchez-Vega, M., Effinger, R.T., Lipnik, P., Mayes, V.E., Willis, D.K., Helmer, R.G.

“…With the goal of measuring precise gamma-ray intensities for short-lived (<5 s) accelerator-produced activities, we have calibrated the efficiency of an HPGe…”
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Precise test of internal-conversion theory: αK measurements for transitions in nine nuclei spanning 45 ≤ Z ≤ 78 by Hardy, J.C., Nica, N., Iacob, V.E., Trzhaskovskaya, M.B.

“…We have been testing the theory used to calculate internal-conversion coefficients (ICCs) by making a series of measurements of αK values with precision better…”
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β Decay of Ca 38 : Sensitive test of Isospin Symmetry-Breaking Corrections from Mirror Superallowed 0 + → 0 + Transitions by 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.

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A novel approach to medical radioisotope production using inverse kinematics: A successful production test of the theranostic radionuclide 67Cu by Souliotis, G.A., Rodrigues, M.R.D., Wang, K., Iacob, V.E., Nica, N., Roeder, B., Tabacaru, G., Yu, M., Zanotti-Fregonara, P., Bonasera, A.

“…A novel method for the production of important medical radioisotopes has been developed. The approach is based on performing the nuclear reaction in inverse…”
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Do radioactive half-lives vary with the Earth-to-Sun distance? by Hardy, J.C., Goodwin, J.R., Iacob, V.E.

“…Recently, Jenkins, Fischbach and collaborators have claimed evidence that radionuclide half-lives vary systematically over a ±0.1% range as a function of the…”
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Precise test of internal-conversion theory: Transitions measured in five nuclei spanning 50≤Z≤78 by Hardy, J.C., Nica, N., Iacob, V.E., Miller, S., Maguire, M., Trzhaskovskaya, M.B.

“…In a research program aimed at testing calculated internal-conversion coefficients (ICCs), we have made precise measurements of αK values for transitions in…”
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FT values measured to ±0.1% for superallowed beta transitions: Metrology at sub-second time scales by Hardy, J.C., Iacob, V.E., Park, H.I., Chen, L., Nica, N., Horvat, V., Tribble, R.E., Towner, I.S.

“…Because of angular-momentum conservation, superallowed β decay between 0+ analog states involves only the vector part of the weak interaction, so its measured…”
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The use of Monte Carlo calculations in the determination of a Ge detector efficiency curve by Helmer, R.G, Hardy, J.C, Iacob, V.E, Sanchez-Vega, M, Neilson, R.G, Nelson, J

“…Precise measured data and an extensive set of Monte Carlo calculations have been combined to optimize the parameters for a 280 cm 3 n-type Ge semiconductor…”
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Tests of nuclear half-lives as a function of the host medium and temperature: Refutation of recent claims by Hardy, J.C., Goodwin, J.R., Golovko, V.V., Iacob, V.E.

“…When radioactive isotopes that decay by α, β −, β + and electron-capture transitions are placed in a conducting host material, it has recently been claimed…”
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Testing CVC and CKM Unitarity via superallowed nuclear beta decay by Hardy, J C, Towner, I S, Park, H I, Iacob, V E, Chen, L, Horvat, V, Nica, N, Bencomo, M

“…Currently, the most restrictive test of the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix is anchored by nuclear beta decay. Precise measurements of…”
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Expanding RIB Capabilities at the Cyclotron Institute: \textsuperscript{3}He-LIG production with an Isobar Separator LSTAR by Melconian, D, Berg, G. P. A, Shidling, P. D, Couder, M, Brodeur, M, Chubarian, G, Iacob, V. E, Klimo, J, Tabacaru, G

“…A new \textsuperscript{3}He-driven IGISOL production station and mass separator have been designed to produce neutron-deficient low-mass isotopes at the…”
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Precise tests of internal-conversion theory by Hardy, J.C., Nica, N., Iacob, V.E., Balonek, C., Trzhaskovskaya, M.B.

“…Using the 165.9-keV M1 transition in 139La as a calibrant, we have determined the K-shell internal conversion coefficients (ICCs) for the 127.5-keV E3…”
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Test of internal-conversion theory with precise γ- and X-ray spectroscopy by Hardy, J.C., Nica, N., Iacob, V.E., Trzhaskovskaya, M.B., Helmer, R.G.

“…Precise measurements of K-shell internal conversion coefficients (ICCs) are being used to determine the best method for calculating these coefficients. A…”
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LSTAR — An isobar separator for expanding radioactive ion beam production at the Cyclotron Institute, Texas A&M University by Berg, G.P.A, Melconian, D., Couder, M., Brodeur, M., Iacob, V.E., Klimo, J., Shidling, P.D.

“…A new isobar separator, LSTAR (Light-ion guide Separator for Texas A&M’s Radioactive ion beams), has been designed to purify the exotic beams produced by a…”
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Expanding RIB capabilities at the Cyclotron Institute: 3He-LIG production with an isobar separator LSTAR by Melconian, D., Berg, G.P.A., Shidling, P.D., Couder, M., Brodeur, M., Chubarian, G., Iacob, V.E., Klimo, J., Tabacaru, G.

“…A new 3He-driven IGISOL production station and mass separator have been designed to produce neutron-deficient low-mass isotopes at the Cyclotron Institute for…”
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Precise half-life measurement of the superallowed emitter 30S by Iacob, V. E, Hardy, J. C, Chen, L, Horvat, V, Bencomo, M, Nica, N, Park, H. I, Roeder, B. T, Saastamoinen, A

“…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…”
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The TAMUTRAP facility: A Penning trap facility at Texas A&M University for weak interaction studies by Shidling, P.D., Mehlman, M., Kolhinen, V.S., Chubarian, G., Cooper, L., Duran, G., Gilg, E., Iacob, V.E., Marble, K.S., McAfee, R., McClain, D., McDonough, M., Nasser, M., Gonzalez-Ortiz, C., Ozmetin, A., Schroeder, B., Soulard, M., Tabacaru, G., Melconian, D.

“…The Texas A&M University Penning Trap (TAMUTRAP) facility aims to test the standard model of the electroweak interaction by measuring the β-ν correlation…”
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Precise measurement of alpha_K and alpha_T for the 109.3-keV M4 transition in 125Te: Test of internal-conversion theory by Nica, N, Hardy, J. C, Iacob, V. E, Werke, T. A, FoldenIII, C. M, Ofodile, K, Trzhaskovskaya, M. B

“…Phys. Rev. C 95, 064301 (2017) We have measured the K-shell and total internal conversion coefficients (ICCs), alpha_K and alpha_T, for the 109.3-keV M4…”
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