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First Direct Measurement of an Astrophysical p-Process Reaction Cross Section Using a Radioactive Ion Beam.
Lotay, G; Gillespie, S A; Williams, M; Rauscher, T; Alcorta, M; Amthor, A M; Andreoiu, C A; Baal, D; Ball, G C; Bhattacharjee, S S; Behnamian, H; Bildstein, V; Burbadge, C; Catford, W N; Doherty, D T; Esker, N E; Garcia, F H; Garnsworthy, A B; Hackman, G; Hallam, S; Hudson, K A; Jazrawi, S; Kasanda, E; Kennington, A R L; Kim, Y H; Lennarz, A; Lubna, R S; Natzke, C R; Nishimura, N; Olaizola, B; Paxman, C; Psaltis, A; Svensson, C E; Williams, J; Wallis, B; Yates, D; Walter, D; Davids, B.
Afiliación
  • Lotay G; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
  • Gillespie SA; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Williams M; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Rauscher T; Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom.
  • Alcorta M; Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland.
  • Amthor AM; Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB, United Kingdom.
  • Andreoiu CA; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Baal D; Department of Physics and Astronomy, Bucknell University, Lewisburg, Pennsylvania 17837, USA.
  • Ball GC; Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
  • Bhattacharjee SS; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Behnamian H; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Bildstein V; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Burbadge C; Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
  • Catford WN; Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
  • Doherty DT; Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
  • Esker NE; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
  • Garcia FH; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
  • Garnsworthy AB; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Hackman G; Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
  • Hallam S; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Hudson KA; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Jazrawi S; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
  • Kasanda E; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Kennington ARL; Department of Physics, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada.
  • Kim YH; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
  • Lennarz A; Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
  • Lubna RS; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
  • Natzke CR; Department of Nuclear Engineering, Hanyang University, Seoul 04763, Republic of Korea.
  • Nishimura N; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Olaizola B; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Paxman C; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Psaltis A; Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA.
  • Svensson CE; Astrophysical Big Bang Laboratory, CPR, RIKEN, Wako, Saitama 351-0198, Japan.
  • Williams J; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Wallis B; Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom.
  • Yates D; TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
  • Walter D; Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4L8, Canada.
  • Davids B; Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
Phys Rev Lett ; 127(11): 112701, 2021 Sep 10.
Article en En | MEDLINE | ID: mdl-34558922
We have performed the first direct measurement of the ^{83}Rb(p,γ) radiative capture reaction cross section in inverse kinematics using a radioactive beam of ^{83}Rb at incident energies of 2.4 and 2.7A MeV. The measured cross section at an effective relative kinetic energy of E_{cm}=2.393 MeV, which lies within the relevant energy window for core collapse supernovae, is smaller than the prediction of statistical model calculations. This leads to the abundance of ^{84}Sr produced in the astrophysical p process being higher than previously calculated. Moreover, the discrepancy of the present data with theoretical predictions indicates that further experimental investigation of p-process reactions involving unstable projectiles is clearly warranted.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2021 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2021 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos