Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session EG: Nuclear Structure A=100-140
7:00 PM–9:30 PM,
Thursday, October 25, 2018
Hilton
Room: King's 3
Chair: Kathrin Wimmer, The University of Tokyo
Abstract ID: BAPS.2018.HAW.EG.1
Abstract: EG.00001 : Precise αK and αT Internal Conversion Coefficients Measurements of 39.752(6)-keV E3 Transition in 103mRh: Test of Internal Conversion Theory
7:00 PM–7:15 PM
Presenter:
N. Nica
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
Authors:
N. Nica
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
J. C. Hardy
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
V. Horvat
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
V. E. Iacob
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
H. I. Park
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
T. A. Werke
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
K. J. Glennon
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
C. M. Folden III
(Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA)
M. B. Trzhaskovskaya
(Petersburg Nuclear Physics Institute, Gatchina 188300, Russia)
We used the γ- to x-ray ratio method to measure αK and αT for the 39.752(6)-keV E3 transition in 103mRh, which we populated by both the β- decay of 103Ru and the ε decay of 103Pd. Based on the particularities of the two level schemes, from 103Ru decay one can extract both αK and αT, while the 103Pd decay provides a relationship between αK and αT, which is useful as a consistency check. Sources of 103Ru and 103Pd were prepared by neutron activation, and measured for about four months. From 103Ru decay we extracted αK = 140.8(39) and αT = 1428(29); then, using this value of αK, we obtained αT = 1438(37) from 103Pd decay. All the results are preliminary. When compared with Dirac-Fock calculations, these results are in statistical agreement with the version of the theory that incorporates the effect of the K-shell atomic vacancy, αK = 135.3(1) and αT = 1404(1), and disagree with the version that does not, αK = 127.5(0) and α = 1388(2). This is consistent with the results from the series of three E3 and six M4 transitions that we measured previously, and extends our measurements to the lowest Z we have studied so far.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.EG.1
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