NAM2019
  • NAM2021
    • Contacts
  • Science
    • Science Programme
    • Plenary Talks
    • Parallel Sessions
    • Special Lunches/Discussion Sessions
    • Poster Session
    • NAM Community Session
  • Social
    • Presidential Address
    • Herschel Concert
    • RAS Awards Ceremony
    • Virtual Stonehenge Tour
  • Media
  • Public Engagement
    • Public engagement opportunities
    • Public talk
    • Writing Skyscapes
  • Venue
    • Code of Conduct
    • Accessing the conference
    • Gather.town
    • NAM2021 Slack
    • About Bath
  • NAM2021
    • Contacts
  • Science
    • Science Programme
    • Plenary Talks
    • Parallel Sessions
    • Special Lunches/Discussion Sessions
    • Poster Session
    • NAM Community Session
  • Social
    • Presidential Address
    • Herschel Concert
    • RAS Awards Ceremony
    • Virtual Stonehenge Tour
  • Media
  • Public Engagement
    • Public engagement opportunities
    • Public talk
    • Writing Skyscapes
  • Venue
    • Code of Conduct
    • Accessing the conference
    • Gather.town
    • NAM2021 Slack
    • About Bath

Poster

id
Triggering rp-process nucleosynthesis on neutron stars in binary systems through alpha capture on oxygen-15
Cosmic Chemical Evolution
Jennifer
Sanchez Rojo
Date Submitted
2021-04-30 09:01:00
University of York
J. S. Rojo, C.Aa. Diget, A. M. Laird (University of York), N. De Séréville, M. Assié, F. Galtarossa, D. Beaumel, F. Hammache, S. Franchoo (IPN Orsay), D. Ramos, A. Lemasson, E. Clément, B. Bastin, C. Fougeres, V. Girard-Alcindor,S. Leblond, F. de Oliveira-Santos (GANIL), L. Achouri, F. Delaunay, F. Flavigny, J. Gibelin, C. Lenain, A. Matta (LPC Caen), K. Rezynkina, F. Didierjean, G. Duchêne (CNRS-IPHC Strasbourg), P. Adsley (iThemba LABS), W Catford (U. of Surrey) A. Gadea (IFIC), ...
The astrophysical oxygen-15 alpha capture reaction [1] is a key breakout route from the Hot CNO cycle leading to explosive nucleosynthesis via the rp-process on the surface of neutron stars in binary systems. Determining an accurate cross section for the relevant states is critical for a better understanding of the X-ray burst energy production and light-curves [2], as well as other novel binary stellar systems involving neutron stars and their potential impact on nucleosynthesis [3].

An indirect alpha transfer reaction in inverse kinematics has been performed, populating the relevant states at temperatures up to 1GK. In this, we take advantage of the 15O Radioactive Ion Beam provided at GANIL and the state-of-the art detection system VAMOS + AGATA + MUGAST coupled together for the first time [4], allowing us an unrivalled selectivity for detecting triple coincidences in this reaction. We will present the experimental set-up and analysis, as well as preliminary results for the strongest populated resonances in 19Ne.

[1] M. R. Hall et al. Phys. Rev. C 99, 035805 (2019)
[2] R. H. Cyburt et al. Astrophys. J. 830, 55 (2016)
[3] J. Keegans et al. MNRAS, V. 485, Issue 1, Pages 620–639 (2019)
[4] M. Assié et al. Accepted for publication in NIMA (2021)

NAM 2020 Logo AWRAS Logo

 

Bath University LogoUKRI STFC new

All attendees are expected to show respect and courtesy to other attendees and staff, and to adhere to the NAM Code of Conduct.

© 2022 Royal Astronomical Society

Login