Angular Distributions of Products from Reactions of Copper Isotopes withHe4Ions
- 20 June 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 158 (4), 1027-1041
- https://doi.org/10.1103/physrev.158.1027
Abstract
Angular distributions of the recoil products of the reaction as well as of the (), (), (), and () reactions of have been measured over the energy range of 20-43 MeV. The results have been compared with a Monte Carlo evaporation calculation and good agreement has been obtained for a reasonable choice of the level-density parameter for all but the () and () reactions at the higher energies. The discrepancies observed for the latter are indicative of a direct-interaction mechanism. Average properties of the angular distributions have been used to obtain the average values of particle and photon energies for the various reactions. The information obtainable from transformations of the angular distributions between the laboratory and center-of-mass systems has been explored. It was found that, on the assumption that the distribution of evaporation recoil velocities is isotropic and Gaussian, the laboratory distributions could be characterized by two parameters, namely the most probable evaporation velocity and a Gaussian width parameter. The latter could in turn be used to obtain average nucleon and photon energies.
Keywords
This publication has 15 references indexed in Scilit:
- Energetics of Nucleon and Photon Emission from Compound Nuclei: Angular Distributions ofCu61Recoil ProductsPhysical Review B, 1967
- Recoil Ranges of Products from Reactions ofwith 11-33-MeVIonsPhysical Review B, 1966
- Recoil Ranges of Products from Reactions of Copper with 11—43-MeVIonsPhysical Review B, 1966
- Energetics of theAl27(B11, p3n)Cl34mReaction from Recoil StudiesPhysical Review B, 1966
- Angular-Momentum Effects on Neutron Emission by Dy and Tb Compound NucleiPhysical Review B, 1964
- Study of the Reactions and by Means of Recoil TechniquesPhysical Review B, 1962
- Application of Recoil Techniques to Study of the ReactionsRa226(α, 4n)Th226,Pb208(α, 2n)Po210, andPb207(α, n)Po210Physical Review B, 1962
- Recoil Studies of Heavy Element Nuclear Reactions. IPhysical Review B, 1960
- Reactions ofandwith Alpha ParticlesPhysical Review B, 1959
- Range of 6- to 18-Mev Protons in Be, Al, Cu, Ag, and AuPhysical Review B, 1957