Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session J11: Physics in medicine: devices, algorithms, and models
1:30 PM–3:18 PM,
Sunday, April 14, 2019
Sheraton
Room: Governor's Square 17
Sponsoring
Unit:
GMED
Chair: Robert Jeraj, University of Wisconsin, Madison
Abstract: J11.00001 : High-precision gamma-ray spectroscopy for enhancing the application of radioisotopes *
1:30 PM–1:42 PM
View Presentation Abstract
Presenter:
Lemise Saleh
(Florida International University)
Authors:
Lemise Saleh
(Florida International University)
Elizabeth McCutchan
(Brookhaven National Laboratory)
Alejandro A Sonzogni
(Brookhaven National Laboratory)
Suzanne Smith
(Brookhaven National Laboratory)
Michael Carpenter
(Argonne National Laboratory)
John P Greene
(Argonne National Laboratory)
Shaofei Zhu
(Argonne National Laboratory)
Matthew Gott
(Argonne National Laboratory)
R. Jerry Nickles
(University of Wisconsin)
Paul Ellison
(University of Wisconsin)
Collaboration:
E.A. McCutchan ,A.A. Sonzogni, and S.V. Smith Brookhaven National Laboratory J.P. Greene, M.P. Carpenter, M. Gott, and S. Zhu Argonne National Laboratory R. J. Nickels, P. Ellison University of Wisconsin
Precise knowledge of the radiation emitted by unstable isotopes is needed in a number of applications including nuclear medicine. Many isotopes were last studied over 30 years ago with primitive detectors and no particular use in mind. Since then, gamma-ray spectroscopy has made tremendous advances, now using multiple high-purity germanium (HPGe) detectors employing Compton-suppression and high efficiency gamma-gamma coincidence spectroscopy. In the present work, we utilize these new techniques to improve the decay schemes of several isotopes with potential for PET imaging.
Sources were produced either at the University of Wisconsin or the Brookhaven Linac Isotope Producer and then shipped to Argonne National Laboratory for assay using the state-of-the-art gamma-ray spectrometer, Gammasphere, consisting of 100 Compton-suppressed HPGe detectors. In all studies, the high-sensitivity of Gammasphere allowed for significant revisions to the decay schemes, including the observation of many new levels and gamma-ray transitions and reduction in the uncertainties of gamma-ray intensities and deduced beta-feedings. An overview of results on 76Br, 86Y, and 188Ir will be presented.
*Work supported by the U.S. DOE under Contract Nos. DE-AC02-98CH10946 and DE-AC02-06CH11357.
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