INTERNAL CONVERSION COEFFICIENTS OF $gamma$ RAYS IN Pu$sup 23$$sup 9$

Journal Article · Sat Nov 30 23:00:00 EST 1957 · Physical Review (U.S.) Superseded in part by Phys.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.108.1308· OSTI ID:4338257

Ewan, G T; Knowles, J W; MacKenzie, D R

The K-conversion coefficients of the predomimantly M1 gamma rays of 209.7, 22B.2, and 277.9 kev following the beta decay of Np/sup 239/ were measured using a curved crystal gamma -ray spectrometer and a lens type beta - ray spectrometer. The measured K-conversion coefficients are 1.76 plus or minus 0.30, 1.60 plus or minus 0.16, and 1.16 plus or minus 0.12, respectively. A limit of less than 1O% has been placed on the admixture of E2 in these radiations from a study of the K/L and L/sub I/: L/sub II/: L/sub III/ conversion ratios. It is found, for Z = 94, that the measured conversion coefficients show better agreement with the M1 predictions of Sliv who allowed for finite nuclear size than with Rose et al. who assured a point charge nucleus. In addition, the K- conversion coefficients of the 254.7-, 285.5-, 316.2-, and 334.4-kev gamma rays of Pu/sup 23/, have been measured to be 0.88 plus or minus 0.32, O.11 plus or minus 0.02, 0.027 plus or minus 0.005, and 0.025 plus or minus 0.005, and the L/sub I/ and L/sub II/ conversion coefficients of the 106.4-kev gamma ray to be 0.062 plus or minus 0.007 and O.071 plus or minus 0.007, respectively. (auth)

• Research Organization: Atomic Energy of Canada, Ltd., Chalk River, Ontario
• NSA Number: NSA-12-004409
• OSTI ID: 4338257
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 108; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATOMIC MODELS
BETA DECAY
BETA SPECTROMETERS
BRAGG REFLECTION
CRYSTALS
ELECTRIC CHARGES
ENERGY LEVELS
GAMMA RADIATION
GAMMA SPECTROMETERS
INTERNAL CONVERSION
LATTICES
LENSES
MEASURED VALUES
MULTIPOLES
NEPTUNIUM 239
NUCLEAR MODELS
NUCLEAR STRUCTURE
ORBITS
PHYSICS
PLUTONIUM 239
REFLECTION
SPECTROMETERS
SPIN