THE DECAY SCHEME OF 10.1-h Am$sup 24$$sup 4$

Journal Article · Thu Feb 01 04:00:00 EST 1962 · Nuclear Phys.

DOI:https://doi.org/10.1016/0029-5582(62)90042-1· OSTI ID:4799189

Vandenbosch, S E; Day, P

A 10.1-hr beta-emitter produced by neutron irradiation of enriched (99.97%) Am/sup 243/ was chemically identified as an isotope of Am and is assigned to an isomer of Am/sup 244/. The decay scheme was studied using a beta spectrometer in addition to gamma - gamma and gamma - beta coicnicidence scintillation counting techniques. A single beta group with an end point energy of 387 plus or minus 1 kev (log ft = 5.7) populates a 1042-kev level in Cm/sup 244/. This 1042-kev level decays to the 4+, 6+, and 8+ members of the ground state rotational band by highly retarded E2 transitions suggesting that it is a (6,6+) particle level. Rotational levels were observed at 0(0,0+), 42.9(0,2+), 142.3(0,4+), decays by beta emission principally to the ground state of Cm/sup 244/ with an energy of 1498 plus or minus 10 kev (log ft = 6.3). Spin assignments of 6- to the 10.1-hr ground state and 1- to the 26-min isomer were obtained by couplings of the odd neutron and odd proton Nilsson orbitals. These assignments are consistent with the data. (auth)

• Research Organization: Argonne National Lab., Ill.
• NSA Number: NSA-16-013987
• OSTI ID: 4799189
• Journal Information: Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 30
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMERICIUM 243
AMERICIUM 244
BETA DECAY
BETA PARTICLES
BETA SPECTROMETERS
COINCIDENCE METHODS
CURIUM 244
DECAY
ENERGY LEVELS
GAMMA RADIATION
IRRADIATION
ISOMERS
NEUTRONS
NILSSON MODEL
NUCLEAR MODELS
PARITY
PHYSICS
PRODUCTION
ROTATION
SCINTILLATION COUNTERS
SPIN
TRANSIENTS