/sup 37/Cl(/sup 3/He,p)/sup 39/Ar reaction. [17 and 19 MeV; spectra, angular distribution, DWBA]

Journal Article · Tue Feb 01 04:00:00 EST 1977 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.15.505· OSTI ID:7316534

Corwin, W C; Segel, R E

Proton spectra from the /sup 37/Cl(/sup 3/He,p)/sup 39/Ar reaction were taken at bombarding energies of 17 MeV and 19 MeV at angles between 5/sup 0/ and 40/sup 0/. A total of 28 states were observed below 5 MeV, most of which can be identified with states reported in other reactions. Between 5 and 7 MeV, 19 more peaks were seen, and it is probable that many of these do not correspond to a single level. Dominating the spectrum is the transition to the 9.078 MeV level, which is the analog of the /sup 39/Cl ground state. The antianalog of the 9.078 MeV level is predicted to lie at about 2.4 MeV and, in the simplest shell model picture, should be strongly fed. However, no such transition was found. Evidence is presented that suggests that the 3.383 MeV state, which is fed much more weakly than the analog, contains much of the antianalog configuration with some fragmentation to higher energies indicated. This state appears to belong to the class of multiparticle, multihole states of unstretched isospin that lie at a higher than expected energy, but the reason for the existence of this class remains unclear. The analog and several other states, including the suspected antianalog, exhibit an L = 0 angular distribution. Distorted-wave Born approximation calculations give a fair fit to both the ground- and the first excited state transitions when wave functions from a shell model calculation are used.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 7316534
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 15:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ARGON 39
ARGON ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BORN APPROXIMATION
CHARGED-PARTICLE REACTIONS
CHLORINE 37 TARGET
DIRECT REACTIONS
DISTRIBUTION
DWBA
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVEN-ODD NUCLEI
EXCITED STATES
FERMIONS
HADRONS
HELIUM 3 REACTIONS
ISOBARIC ANALOGS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MULTI-NUCLEON TRANSFER REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PROTON SPECTRA
PROTONS
RADIOISOTOPES
SHELL MODELS
SPECTRA
STRIPPING
TARGETS
TRANSFER REACTIONS
TWO-NUCLEON TRANSFER REACTIONS
YEARS LIVING RADIOISOTOPES