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Neutron-upscattering enhancement of the triple-alpha process.
Bishop, J; Parker, C E; Rogachev, G V; Ahn, S; Koshchiy, E; Brandenburg, K; Brune, C R; Charity, R J; Derkin, J; Dronchi, N; Hamad, G; Jones-Alberty, Y; Kokalova, Tz; Massey, T N; Meisel, Z; Ohstrom, E V; Paneru, S N; Pollacco, E C; Saxena, M; Singh, N; Smith, R; Sobotka, L G; Soltesz, D; Subedi, S K; Voinov, A V; Warren, J; Wheldon, C.
Afiliación
  • Bishop J; Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA. jackbishop@tamu.edu.
  • Parker CE; Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA.
  • Rogachev GV; Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA.
  • Ahn S; Department of Physics & Astronomy, Texas A&M University, College Station, TX, 77843, USA.
  • Koshchiy E; Nuclear Solutions Institute, Texas A&M University, College Station, TX, 77843, USA.
  • Brandenburg K; Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA.
  • Brune CR; Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon, 34126, Republic of Korea.
  • Charity RJ; Cyclotron Institute, Texas A&M University, College Station, TX, 77843, USA.
  • Derkin J; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Dronchi N; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Hamad G; Department of Chemistry, Washington University, St. Louis, MO, 63130, USA.
  • Jones-Alberty Y; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Kokalova T; Department of Physics, Washington University, St. Louis, MO, 63130, USA.
  • Massey TN; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Meisel Z; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Ohstrom EV; School of Physics and Astronomy, University of Birmingham, Birmingham, UK.
  • Paneru SN; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Pollacco EC; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Saxena M; Department of Physics, Washington University, St. Louis, MO, 63130, USA.
  • Singh N; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Smith R; IRFU, CEA, Université Paris-Saclay, Gif-Sur-Yvette, France.
  • Sobotka LG; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Soltesz D; Edwards Accelerator Laboratory, Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA.
  • Subedi SK; Department of Engineering and Mathematics, Sheffield Hallam University, Sheffield, S1 1WB, UK.
  • Voinov AV; Department of Chemistry, Washington University, St. Louis, MO, 63130, USA.
  • Warren J; Department of Physics, Washington University, St. Louis, MO, 63130, USA.
  • Wheldon C; McDonnell Center for the Space Sciences, Washington University, St. Louis, MO, 63130, USA.
Nat Commun ; 13(1): 2151, 2022 Apr 20.
Article en En | MEDLINE | ID: mdl-35444209
ABSTRACT
The neutron inelastic scattering of carbon-12, populating the Hoyle state, is a reaction of interest for the triple-alpha process. The inverse process (neutron upscattering) can enhance the Hoyle state's decay rate to the bound states of 12C, effectively increasing the overall triple-alpha reaction rate. The cross section of this reaction is impossible to measure experimentally but has been determined here at astrophysically-relevant energies using detailed balance. Using a highly-collimated monoenergetic beam, here we measure neutrons incident on the Texas Active Target Time Projection Chamber (TexAT TPC) filled with CO2 gas, we measure the 3α-particles (arising from the decay of the Hoyle state following inelastic scattering) and a cross section is extracted. Here we show the neutron-upscattering enhancement is observed to be much smaller than previously expected. The importance of the neutron-upscattering enhancement may therefore not be significant aside from in very particular astrophysical sites (e.g. neutron star mergers).
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos