High-spin studies of [sup 219]Ac

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.663· OSTI ID:5319900

Cristancho, F; Saladin, J X; Metlay, M P ^[1]; Nazarewicz, W ^[2]; Baktash, C; Halbert, M; Lee, I; Winchell, D F ^[3]; Fischer, S M ^[4]; Kabadiyski, M K ^[5]

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1. University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
2. Joint Institute for Heavy Ion Research, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831 (United States) Department of Physics, University of Tennessee, Knoxville, Tennessee 37996 (United States)
3. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
4. University of Notre Dame, Notre Dame, Indiana 46556 (United States)
5. II. Physikalisches Institut, Universitaet Goettingen, Bunsenstr. 7-9, 3400 Goettingen (Germany)

High-spin states up to a probable spin [ital I]=45/2 have been investigated in [sup 219]Ac using the reaction [sup 209]Bi ([sup 13]C,3[ital n]). The alternating parity sequences already observed up to [ital I]=31/2 do not seem to develop further at higher spins. A new side band was observed as well as several [ital E]2/[ital M]1 transitions linking the states of positive parity. Multipolarities and mixing ratios were deduced from an analysis of DCO ratios. In addition mixing ratios were obtained independently from the branching ratios. This allows for determination of [ital B]([ital M]1)/[ital B]([ital E]2) ratios up to [ital I][sup [pi]]=29/2[sup +]. The data are discussed in terms of a transition from the weak coupling scheme at low and medium spins to the particle-hole regime for [ital I][approx gt]31/2.

• DOE Contract Number: AC05-84OR21400; FG05-87ER40361; FG05-93ER40770
• OSTI ID: 5319900
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIUM 219
ACTINIUM ISOTOPES
ALPHA DECAY RADIOISOTOPES
BARYONS
BISMUTH 209 TARGET
BRANCHING RATIO
CARBON 13 REACTIONS
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
E2-TRANSITIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
FERMIONS
GAMMA SPECTRA
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
HIGH SPIN STATES
ISOTOPES
M1-TRANSITIONS
MICROSEC LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
RADIOISOTOPES
SPECTRA
TARGETS