Non-selective (n,. gamma. ) reaction and the search for multi-j supersymmetries

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5975697

Casten, R F

The IBA model leads to predictions for symmetries in even nuclei and supersymmetries encompassing both even and odd mass nuclei. Recently, there has been active interest in determining if there is evidence for the latter in actual nuclei. The most promising supersymmetry evolves from the group U(6/12), and involves the coupling of an 0(6) core to a fermion that can occupy j = 1/2, 3/2 or 5/2 orbits. It might be expected in the Pt isotopes near /sup 196/Pt. Since it incorporates all low lying single particle orbits, the supersymmetry scheme in odd mass nuclei should account for all low lying, low spin, negative parity states. Thus the experimental probe of choice is the non-selective (n,..gamma..) reaction which can, in appropriate cases, disclose all such states. The essentials of the (n,..gamma..) reaction are outlined leading to a discussion of its potential for complete spectroscopy. This is followed by discussion of the empirical results for /sup 195/, /sup 197/, /sup 199/Pt, of the nature and characteristics of the multi-j supersymmetry scheme, of the emerging evidence and systematics for it, and of the implications for alternate supersymmetry schemes.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5975697
• Report Number(s): BNL-32996; CONF-830138-3; ON: DE83013066
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CAPTURE
DAYS LIVING RADIOISOTOPES
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
GAMMA RADIATION
HADRON REACTIONS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INTERACTING BOSON MODEL
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
NEUTRON REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
PLATINUM 194 TARGET
PLATINUM 195
PLATINUM 196 TARGET
PLATINUM 197
PLATINUM 198 TARGET
PLATINUM 199
PLATINUM ISOTOPES
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SPIN
STABLE ISOTOPES
SUPERSYMMETRY
SYMMETRY
TARGETS