Measuring the partial width of the $^{56}$Ni proton-capture resonance through (d,n) with VANDLE and MoNA-LISA

ORAL

Abstract

Due to the long half-life of $^{56}$Ni and the low proton threshold of $^{57}$Cu, the (p,$\gamma )$ reaction on $^{56}$Ni is the linchpin reaction for heavier elements in the \textit{rp} process of explosive nucleosynthesis. A new attempt to measure the proton partial width of the excited 1/2$^{-}$ state in $^{57}$Cu and to indirectly extract the proton-capture resonance strength was performed at the National Superconducting Cyclotron Laboratory using the Versatile Array of Neutron Detectors at Low Energy (VANDLE) along with the MoNA-LISA neutron array. The VANDLE setup of digitizing electronics was event-matched to the MoNA-LISA-Sweeper data acquisition system. After a test run with a stable $^{40}$Ca beam, a beam of $^{56}$Ni impinged onto a deuterated polyethylene target inducing (d,n) transfer reactions to predominantly single-proton states in $^{57}$Cu. These experiments were the commissioning experiments for VANDLE with a transfer reaction. Details of the unique experimental setup will be presented as well as current analysis of the data with both $^{40}$Ca and $^{56}$Ni beams.

Authors

  • William Peters

    • Joint Institute for Heavy Ion Research \& ORNL
  • R. Grzywacz

    • U. Tenn. Knoxville
  • M. Madurga

    • U. Tenn. Knoxville
  • S. Paulauskas

    • U. Tenn. Knoxville
  • S. Taylor

    • U. Tenn. Knoxville
  • J. Allen

    • U. Tenn. Knoxville
  • J.A. Cizewski

    • Rutgers
  • B. Manning

    • Rutgers
  • M.E. Howard

    • Rutgers
  • D.W. Bardayan

    • ORNL
  • S.D. Pain

    • ORNL
  • R.C.C. Clement

    • INL
  • S. Ilyushkin

    • Col. Sch. of Mines
  • P.D. O'Malley

    • Col. Sch. of Mines
  • R. Ikeyama

    • U. Wisconsin LaCrosse
  • R.L. Kozub

    • U. Tenn. Tech.
  • K.D. Long

    • U. Tenn. Tech.
  • Z.J. Bergstrom

    • U. Tenn. Tech.
  • P.A. DeYoung

    • Hope
  • W.F. Rogers

    • Westmont
  • J. Smith

    • MSU/NSCL
  • M. Jones

    • MSU/NSCL
  • T. Baumann

    • MSU/NSCL
  • M. Thoennessen

    • MSU/NSCL