CHARACTERISTICS OF THE DECAY OF Ba$sup 131$m

Journal Article · Fri Feb 15 04:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys.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.129.1712· OSTI ID:4712074

Horen, D J; Kelly, W H; Yaffe, L

Sources of Ba/sup 131m/ were produced by bombarding sodium iodide with Li/sup 7/ ions of about 38-Mev energy, and its half life was redetermined as 14.6 plus or minus 0.2 min. Its decay was studied by means of scintillation techniques. The decay of Ba/sup 131m/ proceeds by a (78 plus or minus 5)-kev E3 transition (/sup alpha / KAPPA = 12.3 plus or minus 1.5), followed by a (107 plus or minus 3)-kev M1 + E2 transition (/sup alpha / KAPPA = 0.90 plus or minus 0.15). Included is a discussion of possible spin and parity assignments for the levels involved in this decay. An auxiliary experiment showed that less than 1% of La/sup 131/ decays lead to Ba/sup 131m/. (auth)

• Research Organization: Univ. of California, Berkeley
• NSA Number: NSA-17-011713
• OSTI ID: 4712074
• Report Number(s): UCRL-10413; 0031-899X
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: United States
• Language: English

Related Subjects

BARIUM 131
DECAY
ENERGY LEVELS
HALF-LIFE
IONS
IRRADIATION
ISOMERS
LANTHANUM 131
LITHIUM 7
PARITY
PHYSICS
SCINTILLATIONS
SODIUM IODIDES
SPIN
TRANSITIONS