Neutron single particle strengths from the (d,p) reaction on F18

R. L. Kozub, Tennessee Technological University
D. W. Bardayan, ORNL Physics Division
J. C. Batchelder, Oak Ridge Associated Universities
J. C. Blackmon, ORNL Physics Division
C. R. Brune, Ohio University
A. E. Champagne, The University of North Carolina at Chapel Hill
J. A. Cizewski, Rutgers University–New Brunswick
U. Greife, Colorado School of Mines
C. J. Gross, ORNL Physics Division
C. C. Jewett, Colorado School of Mines
R. J. Livesay, Colorado School of Mines
Z. Ma, The University of Tennessee, Knoxville
B. H. Moazen, Tennessee Technological University
C. D. Nesaraja, Tennessee Technological University
L. Sahin, The University of North Carolina at Chapel Hill
J. P. Scott, Tennessee Technological University
D. Shapira, ORNL Physics Division
M. S. Smith, ORNL Physics Division
J. S. Thomas, Rutgers University–New Brunswick


The F19 nucleus has been studied extensively. However, there have been no comprehensive experimental studies of F18+n single-particle components in F19, and no measure of neutron vacancies in the F18 ground state, as such experiments require a (radioactive) F18 target or beam. We have used the H2(F18,p)F19 reaction to selectively populate states in F19 that are of F18+n character. The 108.5-MeV radioactive F18+9 beam was provided by the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. Proton-recoil coincidence data were taken for both α-decaying and particle-stable final states. Angular distributions and spectroscopic factors were measured for nine proton groups, corresponding to 13 states in F19. The results are compared to shell model calculations. © 2006 The American Physical Society.