Physics Letters B (Apr 2023)
First application of Markov chain Monte Carlo-based Bayesian data analysis to the Doppler-shift attenuation method
- L.J. Sun,
- C. Fry,
- B. Davids,
- N. Esker,
- C. Wrede,
- M. Alcorta,
- S. Bhattacharjee,
- M. Bowry,
- B.A. Brown,
- T. Budner,
- R. Caballero-Folch,
- L. Evitts,
- M. Friedman,
- A.B. Garnsworthy,
- B.E. Glassman,
- G. Hackman,
- J. Henderson,
- O.S. Kirsebom,
- J. Lighthall,
- P. Machule,
- J. Measures,
- M. Moukaddam,
- J. Park,
- C. Pearson,
- D. Pérez-Loureiro,
- C. Ruiz,
- P. Ruotsalainen,
- J. Smallcombe,
- J.K. Smith,
- D. Southall,
- J. Surbrook,
- L.E. Weghorn,
- M. Williams
Affiliations
- L.J. Sun
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding authors at: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA.
- C. Fry
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA; Los Alamos National Laboratory, Los Alamos, NM 87545, USA; Corresponding authors at: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA.
- B. Davids
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada; Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada; Corresponding author at: TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
- N. Esker
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada; Department of Chemistry, San José State University, San Jose, CA 95192, USA
- C. Wrede
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Corresponding author at: Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA.
- M. Alcorta
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- S. Bhattacharjee
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- M. Bowry
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- B.A. Brown
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
- T. Budner
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
- R. Caballero-Folch
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- L. Evitts
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- M. Friedman
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Racah Institute of Physics, Hebrew University, Jerusalem 91904, Israel
- A.B. Garnsworthy
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- B.E. Glassman
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
- G. Hackman
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- J. Henderson
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- O.S. Kirsebom
- Institute for Big Data Analytics, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
- J. Lighthall
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- P. Machule
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- J. Measures
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- M. Moukaddam
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- J. Park
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada; Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
- C. Pearson
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- D. Pérez-Loureiro
- Canadian Nuclear Laboratories, Chalk River, Ontario K0J 1J0, Canada; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA
- C. Ruiz
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- P. Ruotsalainen
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- J. Smallcombe
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- J.K. Smith
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- D. Southall
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- J. Surbrook
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
- L.E. Weghorn
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA; Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
- M. Williams
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada; Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
- Journal volume & issue
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Vol. 839
p. 137801
Abstract
Motivated primarily by the large uncertainties in the thermonuclear rate of the 30P(p,γ)31S reaction that limit our understanding of classical novae, we carried out lifetime measurements of 31S excited states using the Doppler Shift Lifetimes (DSL2) facility at the TRIUMF Isotope Separator and Accelerator (ISAC-II) facility. The 31S excited states were populated by the 3He(32S,α)31S reaction. The deexcitation γ rays were detected by a clover-type high-purity germanium detector in coincidence with the α particles detected by a silicon detector telescope. We have applied modern Markov chain Monte Carlo-based Bayesian statistical techniques to perform lineshape analyses of Doppler-shift attenuation method γ-ray data for the first time. We have determined the lifetimes of the two lowest-lying 31S excited states. First experimental upper limits on the lifetimes of four higher-lying states have been obtained. The experimental results were compared to shell-model calculations using five universal sd-shell Hamiltonians. Evidence for γ rays originating from the astrophysically important Jπ=3/2+, 260-keV 30P(p,γ)31S resonance with an excitation energy of Ex=6390.2(7) keV in 31S has also been observed, although strong constraints on the lifetime will require better statistics.
