LOW-ENERGY NUCLEAR LEVEL SCHEME OF Rh$sup 10$$sup 4$

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.129.345· OSTI ID:4758980

Greenwood, R C

Investigations of the low-energy level properties (level energies, spins, and parities) of Rh/sup 104/ have been undertaken from studies of the coincidence relationships existing between the low-energy capture gamma rays produced by thermal neutron capture in Rh/sup 103/ using a NaI(Tl) scintillation crystals as detectors. It is known from the decay scheme of the 4.4-min Rh/sup 104m/ isomer that Rh/sup 104/ has energy levels at 52, 98, and 129 kev with spins and parities of 2-, 2+, and 5+, respectively. The data obtained in these investigations have been combined with the isomeric level data in order to determine the properties of several additional levels. Additional levels in Rh/ sup 104/ have been determined at the following energies, with the level spin and parity in parenthesis after the energy; 184 kev (1 plus or minus ), 192 kev (3+), 269 kev (3 plus or minus ), 450 kev, and either 229 kev (3+) or 325 kev (4+). These spin and parity assignments were made on the basis of a K internal conversion coefficient analysis of the coincidence data together with consideration of the relative cascade intensities, On the basis of the possible odd-proton and odd-neutron configurations open to the 184- and 269kev levels, and considering the transition intensities to the lower levels, it was determined that the negative-parity assignment is most probable for both of these levels, with the levels having configuration assignments of (p/sub 3/2/) (d/sub 5/2/). The 192-kev level together with the 229- or 325-kev level most probably have either STA(g/sub 9/2/)/sub 5/!/sub 7/2/ (d/sub 5/2/)/sup n or ( g/sub 9/2/)/sup 5/ (d/sub 5/2)/sup n/ configurations. In fact, if it is the 229-kev level whicn does exist, as the available evidence might seem to indicate, then, since they both have spins and parities of 3+, the 192kev level would have one of these configurations while the 229-kev level would have the other. (auth)

• Research Organization: Illinois Inst. of Tech., Chicago
• NSA Number: NSA-17-007227
• OSTI ID: 4758980
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 129; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BOLTZMANN EQUATION
CALCINATION
CAPTURE
COINCIDENCE METHODS
CRYSTALS
DIFFERENTIAL EQUATIONS
ECONOMICS
ELECTRIC DISCHARGES
ENERGY LEVELS
EQUATIONS
GAMMA RADIATION
GASES
HEATING
INTERNAL CONVERSION
IONIZATION
LEACHING
MOTION
ORE PROCESSING
PARITY
PHOSPHATES
PHYSICS
PRODUCTION
RECOVERY
RHODIUM 104
SCINTILLATION COUNTERS
SODIUM IODIDES
SPIN
SULFURIC ACID
THERMAL NEUTRONS
URANIUM
USES