High spin shell model states in the isotope [sub 43][sup 90]Tc[sub 47]

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.2574· OSTI ID:6771078

Rudolph, D; Gross, C J; Kabadiyski, M K; Lieb, K P; Weiszflog, M ^[1]; Grawe, H; Heese, J; Maier, K ^[2]; Eberth, J ^[3]

---

1. II. Physikalisches Institut, Universitaet Goettingen, D-3400 Goettingen (Germany)
2. Hahn-Meitner-Institut GmbH, D-1000 Berlin 39 (Germany)
3. Institut fuer Kernphysik der Universitaet zu Koeln, D-5000 Koeln 41 (Germany)

High spin states in the nucleus [sup 90]Tc have been identified for the first time via the fusion evaporation reaction [sup 58]Ni([sup 36]Ar,3[ital pn])[sup 90]Tc, at 149 MeV beam energy. The OSIRIS spectrometer with an additional high purity Ge detector at 162[degree] and several particle detectors were used to measure [gamma][gamma] and particle-[gamma][gamma] coincidences, directional correlations of oriented states (DCO's), and line shapes due to Doppler-shift attenuation (DSA). Furthermore, an angular distribution experiment was performed with the reaction [sup 58]Ni([sup 35]Cl,2[ital pn])[sup 90]Tc, at 120 MeV beam energy. Some 90 transitions were placed into a level scheme comprising 45 levels reaching up to a possible spin [ital I]=26[h bar] at 11.2 MeV excitation energy. Definite spin assignments for more than half of the levels were made via angular distribution coefficients and DCO ratios. Shell model calculations were performed in a restricted configuration space consisting of only the [ital p][sub 1/2] and [ital g][sub 9/2] orbitals. The level scheme can be reproduced very well up to spin [ital I]=21[h bar]. The predicted structure of the states is discussed and compared to those of neighboring isotopes.

• OSTI ID: 6771078
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663450 -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663540 -- Nuclear Mass Ranges-- A=39-58-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
ARGON 36 REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
CHLORINE 35 REACTIONS
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
FERMIONS
GAMMA CASCADES
HADRONS
HEAVY ION REACTIONS
HIGH SPIN STATES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NEUTRONS
NICKEL 58 TARGET
NUCLEAR CASCADES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PARTICLE PROPERTIES
PROTONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SPIN
TARGETS
TECHNETIUM 90
TECHNETIUM ISOTOPES