Understanding Na22 Cosmic Abundances

POSTER

Abstract

22Na is an elusive cosmic gamma ray emitter that should be abundant as a product of novae, but this isotope is as of yet unobserved except in the central galactic bulge. The discrepancy could be resolved through a recent measurement of 23Mg structure, which discovered a level that may have significant implications on the rate for 22Na destruction via the 22Na(p,gamma)23Mg reaction. One of the main goals of this project is to perform a direct (p,gamma) measurement of the new resonance using a beam of protons that will be accelerated to impinge on a 22Na radioactive target. The target will be produced at TRIUMF-ISAC in Canada. We are currently in the beginning stages of setting up this experiment at CENPA. I will explain the motivations for the experiment, describe the set up, and present calculations that allow optimization of our beam-line design.

Authors

  • S. Stattel

    • Columbia University
  • J.A. Caggiano

  • L. Buchmann

    • TRIUMF
  • J.M. D'Auria

    • Simon Fraser Univ.
  • D.A. Hutcheon

  • M. Trinczek

  • C. Vockenhuber

  • J. Pearson

  • C. Ruiz

    • TRIUMF
  • K. Snover

    • U. Washington
  • J.J. Ressler

    • Simon Fraser Univ.
  • J. Jose

    • Barcelona
  • A. Sallaska

  • D. Storm

  • A. Garcia

    • U. Washington