Levels of [sup 232]U fed in [sup 236]Pu [alpha] decay

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.2963· OSTI ID:7308239

Ardisson, G ^[1]; Hussonnois, M; LeDu, J F; Trubert, D ^[2]; Lederer, C M ^[3]

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1. Laboratoire de Radiochimie, Universite de Nice Sophia-Antipolis, F06108 Nice Cedex (France)
2. Institut de Physique Nucleaire, B.P. 1, F 91406 Orsay Cedex (France)
3. University of California Energy Institute, Berkeley, California 94720 (United States)

The [gamma] spectrum following the [alpha] decay of [sup 236]Pu has been reinvestigated with a high-resolution HPGe detector. Accurate energies and intensities are reported for 26 [gamma] transitions, of which 20 were observed for the first time. A decay scheme is constructed using the Ritz combination principle, [gamma][gamma] coincidence data, and previously known data from nuclear reactions and from[sup 232]Pa [beta][sup [minus]] decay. We observe feeding of the ground-state rotational band up to spin 8, the [beta] vibrational band to spin 4, the [ital K]=0 octupole vibrational band to spin 5, and the bandhead of the [gamma] vibrational band. New states of [sup 232]U at 927.3 and 967.7 keV, populated with low [alpha]-decay hindrance factors, are assigned as members of a second-excited [ital K][sup [pi]]=0[sup +] band. The ratio of [ital E]1/[ital E]2 transitions in the decay of these states suggests that the [ital E]1 transitions to members of the [ital K]=0 octupole band may be rather fast ([approx]10[sup [minus]3] Weisskopf units). Systematics of hindrance factors for [alpha] decay to vibrational states are presented.

• OSTI ID: 7308239
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663210 -- Ground-State Radioactivity-- (1992-)
663220 -- Electromagnetic Transitions-- (1992-)
663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
DECAY
E1-TRANSITIONS
E2-TRANSITIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITED STATES
GAMMA SPECTROSCOPY
HEAVY ION DECAY RADIOISOTOPES
HEAVY NUCLEI
ISOTOPES
MULTIPOLE TRANSITIONS
NEON 24 DECAY RADIOISOTOPES
NUCLEAR DECAY
NUCLEI
PARITY
PARTICLE PROPERTIES
PLUTONIUM 236
PLUTONIUM ISOTOPES
RADIOISOTOPES
ROTATIONAL STATES
SPECTROSCOPY
SPIN
SPONTANEOUS FISSION RADIOISOTOPES
URANIUM 232
URANIUM ISOTOPES
VIBRATIONAL STATES
YEARS LIVING RADIOISOTOPES