DECAY OF $sub 66$DY$sup 16$$sup 6$

Journal Article · Fri Jul 15 00:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys.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.119.788· OSTI ID:4170200

Helmer, R G; Burson, S B

Samples of Dy/sup 166/ were produced by successive neutron capture in stable Dy/sup 164/. This isotope decays by beta-ray emission with an 80.2-hr half-life to states in Ho/sup 166/. This isotopic assignment of previous authors is confirmed. Separations of the parent and daughter activities were carried out by use of an ion-exchange column. Scintillation studies were made with a 256-channel scintillation coincidence spectrometer. Internal-conversion electrons were measured in magnetic spectrographs with permanent magnets and the continuous beta spectra were observed with a 180 deg magnetic spectrometer with a variable field. The seven gamma-ray transitions observed had energies of branches of 481 and 402 kev were observed with the magnetic spectrometer; two others of 114 and 56 kev are postulated for the decay scheme. The decay scheme presented indicates the existence of five levels in Ho/sup 166/ at 0(0/sup -/), 54(2/sup -/), 82(1/sup -/), 370, and 428(1/sup +/) kev. The ground state and first two excited states are interpreted as members of a rotational band with K = 0. This interpretation implies that in odd-odd nuclei the level sequence can be inverted for the first two excited states of such a band. (auth)

• Research Organization: Argonne National Lab., Ill.
• NSA Number: NSA-14-022413
• OSTI ID: 4170200
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 119; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BETA DECAY
CAPTURE
COINCIDENCE METHODS
DYSPROSIUM 164
DYSPROSIUM 166
ELECTRONS
ENERGY LEVELS
GAMMA RADIATION
HALF-LIFE
HOLMIUM 166
INTERNAL CONVERSION
ION EXCHANGE
MAGNETS
MEASURED VALUES
NEUTRONS
PARITY
PHYSICS
PRODUCTION
ROTATION
ROTATIONAL STATE
SCINTILLATION COUNTERS
SEPARATION PROCESSES
SPECTROMETERS
SPIN