Abstract
The amount of angular momentum dissipated during the particle emission and photon emission stages of the deexcitation of the compound nuclei formed in the reactions of 107, 155, and 197 MeV ¹²C ions with ²⁷A1 and with (superscript nat)Ni, and of 120 MeV²⁰Ne ions with ²⁷A1 has been determined from measurements of the multiplicities and average energies of y-rays emitted in coincidence with the recoiling residual nuclei. The angular momentum dissipated in y emission does not show a strong dependence upon projectile energy but increases with the atomic number of the evaporation residue. For the neon induced reactions, y multiplicities as a function of product energy for products with Z (less than or equal to) 13 indicate that a deep inelastic mechanism contributes to the formation of products with Z close to 11. Statistical model calculations of the average multiplicities and y-ray energies are in good agreement with the experimental results for the carbon induced reactions; poorer agreement was obtained for the neon induced reactions.
Geoffroy, Katherine Ann (1977). The dissipation of angular momentum in nuclei formed in the reactions of carbon ions with aluminum and nickel and of neon ions with aluminum. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -369983.