DECAY OF Pm$sup 143$ AND Pm$sup 14$$sup 4$

Journal Article · Sun Feb 01 04:00:00 EST 1959 · Physical Review (U.S.) Superseded in part by Phys.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.113.895· OSTI ID:4271813

Ofer, S

Radioactive Pm/sup 143/ and Pm/sup 144/ were produced by the bombardment of Pr/sup 141/ with alpha particles. Gamma rays at 475 kev, 610 kev, and 695 kev are found to be associated with the decay of Pm/sup 144/ by K-capture to Nd/ sup 144/. A 740 kev gamma transition is associated with the decay of Pm/sup 143/ by K-capture to Nd/sup 143/ Levels of Nd/sup 144/ are placed at 695 kev (2+), 1305 kev (4 sintering time ), and 1780 kev (6+) above the ground level. Assignments of spins of levels and multipolarities of gamma-ray transitions are based on the results of measurements of conversion coefficients and gamma-gamma angular correlations. A value of (13 sintering time 4) x 10/sup -11/ sec was found for the mean life of the 1305-kev level of Nd/sup 144/. An upper limit of 3 x 10/sup -11/ sec was found for the mean life of the 695-kev level of Nd/sup 144/ (auth)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• NSA Number: NSA-13-012127
• OSTI ID: 4271813
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 113; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALPHA BEAMS
ANGULAR DISTRIBUTION
DECAY
ENERGY
ENERGY LEVELS
GAMMA RADIATION
HALF-LIFE
INTERNAL CONVERSION
MEASURED VALUES
NEODYMIUM 143
NEODYMIUM 144
NUCLEAR MODELS
PARITY
PHYSICS AND MATHEMATICS
PROMETHIUM 141
PROMETHIUM 143
PROMETHIUM 144
SPIN