Model for alpha particle induced nuclear reactions: /sup 93/Nb(. cap alpha. ,x. cap alpha. ypzn) from 40--140 MeV
A comprehensive model is introduced for alpha particle induced nuclear reactions. Five different mechanisms are examined and discussed. These include inelastic scattering of the incident alpha particle, nucleon pickup, binary fragmentation, dissolution of the alpha in the nuclear field, and preequilibrium processes initiated by alpha-nucleon collisions. A series of experiments was performed to measure the excitation functions of many nuclides produced from the irradiation of /sup 93/Nb by 40--140 MeV alpha particles. Together with alpha particle and proton spectra measured by other authors, these data form the basis of a test of the model introduced. A detailed analysis of the comparison between the calculated and experimental results, with particular emphasis on the interpretation of breakup processes, leads to the conclusion that breakup to four nucleons is preferred to the more commonly assumed binary fragmentation in that a much broader range of experimental data may be reproduced.
- Research Organization:
- Dipartimento di Fisica dell'Universita di Milano, Sezione di Milano, Italia and Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Italia
- OSTI ID:
- 5169646
- Journal Information:
- Phys. Rev. C; (United States), Vol. 29:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALPHA REACTIONS
COMPOUND-NUCLEUS REACTIONS
FRAGMENTATION
INELASTIC SCATTERING
NIOBIUM 93 TARGET
ALPHA SPECTRA
CROSS SECTIONS
DIRECT REACTIONS
EXCITATION FUNCTIONS
MEV RANGE 10-100
MEV RANGE 100-1000
NEUTRONS
PROTON SPECTRA
ZIRCONIUM 90
BARYONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
FUNCTIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEV RANGE
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RADIOISOTOPES
SCATTERING
SPECTRA
STABLE ISOTOPES
TARGETS
ZIRCONIUM ISOTOPES
651725* - Nuclear Properties & Reactions
A=90-149
Experimental- Nuclear Reactions & Scattering- (-1987)