DECAY OF K$sup 4$$sup 3$

Journal Article · Wed Jul 01 04:00:00 EDT 1959 · Physical Review (U.S.) Superseded in part by Phys.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.115.108· OSTI ID:4227439

Benczer-Koller, N; Schwarzschild, A; Wu, C S

The decay of K/sup 43/ was reinvestigated in an attempt to clarify the discrepancies existing in the ordering of the energy levels of Ca/sup 43/. The external conversion spectrum showed lines corresponding to the following gamma- ray energies: 0.220 plus or minus 0.002, 0.37l plus or minus 0.002, 0.388 plus or minus 0.002, 0.394 plus or minus 0.002, 0.591 plus or minus 0.003, and 0.6l4 plus or minus 0.004 Mev. In addition a gamma ray of l.005 Mev was observed in the scintillation spectrum. BETA - gamma coincindence measurements establish that the gamma transitions to the ground state are the 0.371-Mev and the 0.59l-Mev gamma rays and not the 0.614-Mev gamma as believed previously. These results and the nu - gamma coincidence measurements indicate only one possible level scheme in Ca/sup 43/: 0, 0.371, 0.591, 0.985, and l.373 Mev. These energy levels as well as their proposed spin and parity assignments are in gound agreement with the results from the Massachusetts institute of Technology nuclear reaction data. A twocycle baffle for the solenoid BETA spectrometer is described. This baffle reduces significantly the background due to scattered gamma radiation from very strong external conversion sources. (auth)

• Research Organization: Columbia Univ., New York
• NSA Number: NSA-13-022920
• OSTI ID: 4227439
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 115; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BACKGROUND
BETA DECAY
BETA PARTICLES
BETA SPECTROMETERS
CALCIUM 43
COINCIDENCE METHODS
DECAY
ELECTRONS
ENERGY LEVELS
GAMMA RADIATION
MEASURED VALUES
PARITY
PHYSICS AND MATHEMATICS
POTASSIUM 43
SCATTERING
SCINTILLATION COUNTERS
SPECTRA
SPIN
TRANSIENTS