Other
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..aprc11009c&link_type=abstract
American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #C11.009
Other
Scientific paper
The nuclide ^108Ag possesses an interesting combination of a long-lived isomer (T1/2 = 418 years, I^π = 6^+, E = 109 keV) and a short-lived ground state (T1/2 = 2.37 minutes, I^π = 1^+). The ground state decays primarily by β^- emission with Qβ- = 1,649 keV. A search of the available nuclear data (e. g., ENSDF and Phys. Rev. C 52, 104 (1995)) suggests two possible transitions at energies below 500 keV from the isomer to higher-lying levels, whose subsequent decay can branch to the ground state. This process would lead to a partial depletion of any population trapped within the isomeric state, ^108mAg. Currently, the cross section for induced isomer depletion via these transitions cannot be accurately deduced due to unknown branching ratios, and level widths and spins. Other ``depletion'' levels requiring excitation > 500 keV are also likely. An experimental test of ^108mAg depletion has been performed using 6 MeV bremsstrahlung at the US Army Research Laboratory, with isomeric targets and a computer-controlled repetitive measurement system. The design of the system and experimental results will be discussed.
Carroll Jonathan J.
Henriquez S.
Karamian S.
Litz Marc
Netherton K.
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