Energy Acceptance of the St. George Recoil Separator - Centre d'Etudes Nucléaires de Bordeaux Gradignan Accéder directement au contenu
Article Dans Une Revue Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Année : 2017

Energy Acceptance of the St. George Recoil Separator

Zach Meisel
  • Fonction : Auteur
M.T. Moran
  • Fonction : Auteur
J. Schmitt
C. Seymour
  • Fonction : Auteur
M. Couder
  • Fonction : Auteur

Résumé

Radiative alpha-capture, (α,γ) , reactions play a critical role in nucleosynthesis and nuclear energy generation in a variety of astrophysical environments. The St. George recoil separator at the University of Notre Dame's Nuclear Science Laboratory was developed to measure (α,γ) reactions in inverse kinematics via recoil detection in order to obtain nuclear reaction cross sections at the low energies of astrophysical interest, while avoiding the γ -background that plagues traditional measurement techniques. Due to the γ ray produced by the nuclear reaction at the target location, recoil nuclei are produced with a variety of energies and angles, all of which must be accepted by St. George in order to accurately determine the reaction cross section. We demonstrate the energy acceptance of the St. George recoil separator using primary beams of helium, hydrogen, neon, and oxygen, spanning the magnetic and electric rigidity phase space populated by recoils of anticipated (α,γ) reaction measurements. We find the performance of St. George meets the design specifications, demonstrating its suitability for (α,γ) reaction measurements of astrophysical interest.

Dates et versions

hal-01554506 , version 1 (03-07-2017)

Identifiants

Citer

Zach Meisel, M.T. Moran, G. Gilardy, J. Schmitt, C. Seymour, et al.. Energy Acceptance of the St. George Recoil Separator. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2017, 850, pp.48-53. ⟨10.1016/j.nima.2017.01.035⟩. ⟨hal-01554506⟩

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