Recoil of products from reactions of20,22Ne withNb<

Abstract

The recoil properties of thirty-five nuclides produced in reactions of 100 and 142 MeV Ne and Ne with Nb have been measured. A thick-target/thick-catcher technique was used, with the foils mounted at 45' to the beam axis so as to provide information on the transverse as well as the longitudinal momentum transfer. Relationships have been derived to extract values, from the resulting data, for the average longitudinal component of recoil velocity and the average recoil angle. The experimental results show, in almost all cases, mean recoil velocities less than the compound nuclear velocity. For products with near-target mass, transverse momentum transfers greater than those along the axis were observed. For heavier products, the momentum transfer increases with the product mass. The results from the Ne-induced reactions are significantly different from those of Ne. The results are interpreted mainly in terms of two competing mechanisms: complete fusion/evaporation and a class of process involving varying degrees of mass transfer between projectile and target.

Li7 -induced reaction on Monat : A study of complete versus incomplete fusion

“…In the eighties and nineties, a number of light heavy-ions (such as 12 C, 16 O, 20 Ne etc.) induced reactions on heavy nuclei was performed to investigate CF-ICF using particle-gamma coincidence techniques and recoil range distribution techniques [11][12][13][14][15][20][21][22][23]. It is observed that the articles [18][19][20][21] are consistent with the sum rule model [24] and [13][14][15]23] with the breakup fusion model [25] [18,19,[26][27][28].…”

Level structure of the odd–odd nucleus54Mn

“…The authors suggested that apart from the complete fusion various other processes might contribute significantly to the production of 54 Mn. The mechanism of incomplete fusion (ICF) [11] has been the subject of considerable interest to populate such nuclei at relatively high spins with proper channel selection, where a part of the projectile fuses with the target [12]. Most of the early studies on ICF carried out with projectiles, such as 12 C, 16 O and 20 Ne, have suggested ICF of alpha cluster.…”

“…The mechanism of incomplete fusion (ICF) [11] has been the subject of considerable interest to populate such nuclei at relatively high spins with proper channel selection, where a part of the projectile fuses with the target [12]. Most of the early studies on ICF carried out with projectiles, such as 12 C, 16 O and 20 Ne, have suggested ICF of alpha cluster. An attempt has been made to study the nucleus 54 Mn to explore the possibility of any shape changes due to the break-up of alpha cluster from the 20 Ne beam.…”