High-spin states in the odd-odd nucleus /sup 212/At

Journal Article · Sat Sep 01 00:00:00 EDT 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.20.960· OSTI ID:6089680

Sjoreen, T P; Garg, U; Fossan, D B; Beene, J R; Alexander, T K; Earle, E D; Haeusser, O; McDonald, A B

The properties of high-spin states in /sup 212/At, including three isomers, have been studied with the /sup 208/Pb(/sup 7/Li,3n)/sup 212/At reaction. In-beam measurements with Ge(Li) and intrinsic Ge detectors of ..gamma..-ray excitation functions, ..gamma..-..gamma.. coincidences, ..gamma..-ray angular distributions, pulsed-beam-..gamma.. timing, and perturbed angular distributions with an applied magnetic field were made to establish a decay scheme, level energies, ..gamma..-ray multipolarities, spin-parity assignments, isomeric lifetimes, and g factors. High-spin states up to 15h were identified as predominantly three proton ((..pi..h/sub 9/2/)/sup 3/ or (..pi..h/sub 9/2/)/sup 2/(..pi..i/sub 13/2/)) states of the (N=126) /sup 211/At nucleus coupled to a neutron in either the g/sub 9/2/, i/sub 11/2/, or j/sub 15/2/ orbitals. The experimental energy levels, g factors, and B (M2) value are compared with shell model calculations.

• Research Organization: Department of Physics, State University of New York, Stony Brook, New York 11794
• OSTI ID: 6089680
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 20:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
ASTATINE 212
ASTATINE ISOTOPES
BARYONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVAPORATION MODEL
EXCITATION FUNCTIONS
FERMIONS
FUSION REACTIONS
GAMMA SPECTRA
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
HIGH SPIN STATES
ISOMERIC TRANSITIONS
ISOTOPES
LANDE FACTOR
LEAD 208 TARGET
LIFETIME
LITHIUM 7 REACTIONS
MATHEMATICAL MODELS
MULTIPOLARITY
NEUTRON SPECTRA
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SPECTRA
SPIN
TARGETS