Detecting Short-lived Isotopes Outside the OMEGA-60 Target Chamber Milliseconds After a High-Yield Shot
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Date
2024-10-07
Authors
Bo, Andrew
Belanger, Avery
Fall, Owen
Yuly, Mark
Padalino, Stephen J.
Fletcher, Kurt
Freeman, Charles
Marcus, George
Forest, Chad J.
Stanley, Ben
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Houghton University
Abstract
It may be possible to make fundamental nuclear science measurements of low energy light ion cross sections by collecting and counting the beta decays of the reaction products in the expanding neutral gas after an ICF shot with a doped target. To do this, the Short Lived Isotope Counting System (SLICS) uses a dE E phoswich detector telescope to identify beta particles, and can measure the decay curve for isotopes with half lives from about 20 ms to 20 s. To test the ability of SLICS to identify the desired beta events in the intense radiation environment just outside the OMEGA 60 target chamber immediately after a high yield cryogenic DT shot, a ride along experiment was carried out at the Laboratory for Laser Energetics. A sample of natural boron placed directly in front of the SLICS scintillators was activated by the primary 14.1 MeV DT neutrons via the 11 B(n, α 8 Li reaction. SLICS events falling in a particular region of the 2D histogram formed by the energy lost in the thin dE versus the thick E scintillators were considered to be beta particles, and the time distribution of these events was used to fit the 840 ms decay curve of 8 Li.
This material is based upon work supported by the Department of Energy [National Nuclear Security Administration] University of Rochester "National Inertial Confinement Fusion Program" under Award Number(s) DE NA0004144, and by SUNY Geneseo and Houghton University.
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Event
66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 7-11, 2024
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