First direct measurement of $^{23}$Mg(p,$\gamma$)$^{24}$Al with DRAGON

ORAL

Abstract

During explosive nucleosynthesis, the $^{23}$Mg(p,$\gamma$)$^{24}$Al capture reaction may function as a breakout from the NeNa to the MgAl cycles. Depending on the resonance strength and energy, such a breakout could substantially affect the production of $^{26}$Al and $^{22}$Na which have been detected by orbital satellite. This important reaction was directly studied at astrophysically relevant energies ($E_{lab} \simeq$ 490 keV/u) by the DRAGON collaboration during the summer and fall of 2008. However, due to limitations of the ISAC facility, the experiment was complicated by a $^{23}$Na contamination ranging from 2 to 5000 times more intense than the $^{23}$Mg component. To compensate, a new local time-of-flight system and a multi-segmented ion chamber were used for particle identification. This talk will present and discuss some details of the experiment as well as initial results.

Authors

  • L. Erikson

    • Department of Physics, Colorado School of Mines, Golden, CO, USA
  • C. Vockenhuber

    • TRIUMF, Vancouver, BC, Canada \& Laboratory for Ion Beam Physics, Zurich, Switzerland
  • L. Buchmann

  • A.A. Chen

  • B. Davids

  • S. Foubister

  • U. Greife

  • U. Hager

  • A. Hussein

  • D.A. Hutcheon

  • P. Machule

  • D. Ottewell

  • C. Ruiz

  • G. Ruprecht

  • A. Shotter

  • C. Wrede

  • A. Wallner