Positive-parity states in /sup 43/Ti

Journal Article · Fri Sep 01 04:00:00 EDT 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.18.1148· OSTI ID:6730669

Meyer-Schuetzmeister, L; Elwyn, A J; Gronemeyer, S A; Hardie, G; Holland, R E; Rehm, K E

Positive-parity states of /sup 43/Ti were studied in the /sup 40/Ca(..cap alpha..,n) /sup 43/Ti reaction with alpha particles of 20-MeV energy. Using a pulsed beam the mean lifetime of the 3/2/sup +/ state at 313.0 keV was measured to be tau = 18.2 +- 0.8 ..mu..sec. This leads to a B (M2) value of 0.0334 Weisskopf units, very close to that of the corresponding 3/2/sup +/ ..-->.. 7/2/sup -/ (g.s.) transition in /sup 43/Sc. ..gamma.. decay of the levels in the mirror nucleus /sup 43/Sc suggests that positive-parity states in /sup 43/Ti, and only these, decay to the ground state predominantly via the isomeric 3/2/sup +/ state. Hence the ..gamma.. rays emitted from positive-parity states are selected by measuring a ..gamma..-ray spectrum in coincidence with the delayed 313.0-keV ..gamma.. rays. Three ..gamma.. rays of 709.4, 1040.0, and 1170.5 keV were observed which lead to /sup 43/Ti states 5/2/sup +/ (1022.4 keV), 7/2/sup +/ (1483.5 keV), and 9/2/sup +/ (2062.4 keV). As with thee corresponding states in /sup 43/Sc, these states form a quasirotational band based on the 3/2/sup +/ state. The Coulomb displacement energies E/sub C/(Ti) -E/sub C/(Sc) between these /sup 43/Ti-/sup 43/Sc states are large: about 150 keV: and rather spin independent.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 6730669
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR MOMENTUM
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-ODD NUCLEI
FERMIONS
GAMMA SPECTRA
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIFETIME
MEV RANGE
MEV RANGE 10-100
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPIN
TARGETS
TITANIUM 43
TITANIUM ISOTOPES