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 LD: Nuclear Physics of Supernovae and Massive Stars
9:00 AM–11:30 AM,
Saturday, October 27, 2018
Hilton
Room: Kohala 3
Chair: Ani Aprahamian, University of Notre Dame
Abstract ID: BAPS.2018.HAW.LD.5
Abstract: LD.00005 : First results from HECTOR: High EffiCiency TOtal absorption spectrometeR for p-process nucleosynthesis studies*
10:00 AM–10:15 AM
Presenter:
Anna Simon
(Univ of Notre Dame)
Authors:
Anna Simon
(Univ of Notre Dame)
Orlando Gomez
(University of Notre Dame)
Rebeka Kelmar
(University of Notre Dame)
Craig Reingold
(University of Notre Dame)
Emily A Churchman
(Texas Lutheran Univ)
Sean Kelly
(University of Notre Dame)
Adam M Clark
(Univ of Notre Dame)
Caley Harris
(Michigan State Univ)
Samuel L Henderson
(Univ of Notre Dame)
Artemis Spyrou
(Michigan State Univ)
Alicia Palmisano
(Michigan State Univ)
The p-process is a nucleosynthesis scenario that occurs during an explosion of a supernova that produces proton-rich isotopes of elements between Se and Hg. The p-process involves series of ($\gamma$,n), ($\gamma$,p) and ($\gamma$,$\alpha$) reactions on pre-existing s-process seed nuclei. The reactions relevant for the p-process can be studied in the laboratory via the inverse ones: the capture of protons or $\alpha$-particles. For these measurements, the High EffiCiency TOtal Absorption SpectrometeR (HECTOR) was developed at the University of Notre Dame.
HECTOR is a NaI(Tl) summing detector comprised of 16 separate NaI(Tl) crystals, each read by 2 photomultipliers. The array is designed for precision cross section measurements for (p,$\gamma$) and ($\alpha$,$\gamma$). The first measurements of the (p,$\gamma$) and ($\alpha$,$\gamma$) reactions on $^{102}$Pd and $^{90}$Zr isotopes will be presented in this talk. The results will be compared to the cross sections obtained with other techniques, when available, and to the Hauser-Feshbach model calculations using the Talys code.
*This work is supported by the NSF under grants number: PHY-1614442, PHY- 1713857(NSL), PHY-1430152 (JINA-CEE).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.LD.5
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