Physics Letters B (Oct 2022)
Single neutron transfer on 23Ne and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts
- G. Lotay,
- J. Henderson,
- W.N. Catford,
- F.A. Ali,
- J. Berean,
- N. Bernier,
- S.S. Bhattacharjee,
- M. Bowry,
- R. Caballero-Folch,
- B. Davids,
- T.E. Drake,
- A.B. Garnsworthy,
- F. Ghazi Moradi,
- S.A. Gillespie,
- B. Greaves,
- G. Hackman,
- S. Hallam,
- D. Hymers,
- E. Kasanda,
- D. Levy,
- B.K. Luna,
- A. Mathews,
- Z. Meisel,
- M. Moukaddam,
- D. Muecher,
- B. Olaizola,
- N.A. Orr,
- H.P. Patel,
- M.M. Rajabali,
- Y. Saito,
- J. Smallcombe,
- M. Spencer,
- C.E. Svensson,
- K. Whitmore,
- M. Williams
Affiliations
- G. Lotay
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom; Corresponding author.
- J. Henderson
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom; TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- W.N. Catford
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- F.A. Ali
- Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada; Department of Physics, College of Education, University of Sulaimani, P.O. Box 334, Sulaimani, Kurdistan Region, Iraq
- J. Berean
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- N. Bernier
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada; Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
- S.S. Bhattacharjee
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- M. Bowry
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- R. Caballero-Folch
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- B. Davids
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada; Department of Physics, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
- T.E. Drake
- Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada
- A.B. Garnsworthy
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- F. Ghazi Moradi
- Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- S.A. Gillespie
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- B. Greaves
- Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- G. Hackman
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- S. Hallam
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- D. Hymers
- Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- E. Kasanda
- Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- D. Levy
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- B.K. Luna
- Department of Physics, Tennessee Technological University, Cookeville, TN 38505, USA
- A. Mathews
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- Z. Meisel
- Department of Physics & Astronomy, Ohio University, Athens, OH 45701, USA
- M. Moukaddam
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom
- D. Muecher
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada; Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- B. Olaizola
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- N.A. Orr
- LPC-Caen, IN2P3/CNRS, UniCaen, ENSICAEN, Normandie Université, 14000 Caen, France
- H.P. Patel
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- M.M. Rajabali
- Department of Physics, Tennessee Technological University, Cookeville, TN 38505, USA
- Y. Saito
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada; Department of Physics and Astronomy, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
- J. Smallcombe
- TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- M. Spencer
- Department of Physics, University of Surrey, Guildford, GU2 7XH, United Kingdom; TRIUMF, Vancouver, British Columbia, V6T 2A3, Canada
- C.E. Svensson
- Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- K. Whitmore
- Department of Physics, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
- M. Williams
- TRIUMF, 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. 833
p. 137361
Abstract
We present new experimental measurements of resonance strengths in the astrophysical 23Al(p,γ)24Si reaction, constraining the pathway of nucleosynthesis beyond 22Mg in X-ray burster scenarios. Specifically, we have performed the first measurement of the (d,p) reaction using a radioactive beam of 23Ne to explore levels in 24Ne, the mirror analog of 24Si. Four strong single-particle states were observed and corresponding neutron spectroscopic factors were extracted with a precision of ∼20%. Using these spectroscopic factors, together with mirror state identifications, we have reduced uncertainties in the strength of the key ℓ = 0 resonance at Er = 157 keV, in the astrophysical 23Al(p,γ) reaction, by a factor of 4. Our results show that the 22Mg(p,γ)23Al(p,γ) pathway dominates over the competing 22Mg(α,p) reaction in all but the most energetic X-ray burster events (T>0.85 GK), significantly affecting energy production and the preservation of hydrogen fuel.
