Physics: Posters

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Browsing Physics: Posters by Author "Bo, Andrew"

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    Detecting Short-lived Isotopes Outside the OMEGA-60 Target Chamber Milliseconds After a High-Yield Shot
    (Houghton University, 2024-10-07) Bo, Andrew; Belanger, Avery; Fall, Owen; Yuly, Mark; Padalino, Stephen J.; Fletcher, Kurt; Freeman, Charles; Marcus, George; Forest, Chad J.; Stanley, Ben; Regan, Sean P.
    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.
    66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 7-11, 2024
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    Test of GEANT 4 Simulation Efficiency Predictions for the Short-lived Isotope Counting System
    (Houghton University, 2024-10-07) Bo, Andrew; Belanger, Avery; Fall, Owen; Yuly, Mark; Hertz, Shoshanna; Richardson, Silas; Wilson, Liam; Ramos, Delvin; Woods, Michelle; Padalino, Stephen J.; Fletcher, Kurt; Freeman, Charles; Marcus, George; Forrest, Chad J.; Regan, Sean P.
    Ultrafast high power lasers may be used to generate short pulses of energetic ions that can be used for nuclear activation cross section measurements The Short Lived Isotope Counting System ( was developed to count the beta decays of radioactive product nuclei resulting from light ion reactions generated in this way One important SLICS parameter, which has been determined using a Geant 4 simulation, is the detection efficiency, the ratio of detected betas to number of product nuclei To test this prediction, an experiment was carried out using the SUNY Geneseo Pelletron A deuteron beam incident on a thin natural Li target created 840 ms half life 8 Li via the 7 Li( d,p 8 Li reaction The beta particles from the 8 Li decay were identified and counted by the SLICS detector, a dE E phoswich detector telescope Alpha particles from 8 Li(d,α) 4 He on the same natural lithium target were counted by a silicon surface barrier detector at various backward angles The efficiency of the SLICS detector was determined using the number of the α and β particles counted by the two detectors and the previously measured cross sections and Li isotopic abundances. 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 NA 0004144 and by SUNY Geneseo and Houghton University
    66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 7-11, 2024