Simulations of $^{12}$C Break Up In A Twin Ionization Chamber

POSTER

Abstract

In stellar explosions the triple $\alpha$ decay process is key to forming the life-giving $^{12}$C . This experiment is to further investigate the energy region in $^{12}$C around 10 MeV where a theoretically predicted 2$^{+}$ state has yet to be observed. The motivation for studying this is to better understand the $^{12}$C nucleosynthesis process that occurs in red giant stars where the short lived $^{8}$Be interacts with alphas at extreme temperature and pressure scenarios which then in turn creates $^{12}$C. We study the particle-unbound states by implanting $^{12}$B into a twin Frisch grid ionization chamber and following the decay into $^{12}$C and subsequently into three $\alpha$ particles. The response of this ionization chamber to the detection of multiple $\alpha$ particles was studied using various simulation programs. Results of these simulations and limits for the predicted 2$^{+}$ state will be presented.

*This work is supported by the U.S. DOE, ONP, under contract DE-AC02-06CH11357 (ANL) and DE-FG02-04ER41320 (WMU). Authors from the Notre Dame acknowledge support from the NSF under grant PHY01-40324, and the JINA, NSF-PFC under grant PHY02-16783.

Authors

  • C.B. Segal

    • Florida State University
  • N.R. Patel

    • Colorado School of Mines
  • U. Greife

    • Colorado School of Mines
  • K.E. Rehm

    • Argonne National Laboratory
  • C.M. Deibel

    • Argonne National Laboratory
  • J. Greene

    • Argonne National Laboratory
  • D. Henderson

    • Argonne National Laboratory
  • C.L. Jiang

    • Argonne National Laboratory
  • B.P. Kay

    • Argonne National Laboratory
  • H.Y. Lee

    • Argonne National Laboratory
  • R. Pardo

    • Argonne National Laboratory
  • M. Notani

    • Argonne National Laboratory
  • S.T. Marley

    • Western Michigan University
  • X.D. Tang

    • University of Notre Dame