Similar rotational band structures in doubly-odd /sup 136/Pm and /sup 134/Pr

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.36.1810· OSTI ID:5959729

Beausang, C W; Hildingsson, L; Paul, E S; Piel, Jr, W F; Xu, N; Fossan, D B

The level structures of the doubly-odd nuclei /sup 136/Pm and /sup 134/Pr have been studied to high spin following the reactions /sup 114/Cd(/sup 27/Al,5n)/sup 136/Pm, /sup 116/Sn(/sup 24/Mg,p3n)/sup 136/Pm, and /sup 114/Cd(/sup 27/Al,..cap alpha..3n)/sup 134/Pr. The two nuclei show very similar collective features. In both nuclei a rotational band built on the ..pi..h/sub 11/2/x..nu..h/sub 11/2/ configuration has been observed. This band shows a constant signature splitting of approx.50 keV with no backbend in both cases. In addition, a sideband built on the ..pi..(413)(5/2/sup +/x..nu..h/sub 11/2/ configuration has been observed in /sup 136/Pm. This band becomes yrast at high spins and shows a gain in alignment of approx.8h-dash-bar at a frequency of h-dash-bar..omega..approx.0.28 MeV due to the decoupling of a pair of h/sub 11/2/ protons. In /sup 134/Pr the sideband was only observed above the band crossing. Experimental ratios of reduced transition probabilities, B(M1)/B(E2), have been extracted from transitions within the bands and compared to theoretical values obtained from a semiclassical model.

• Research Organization: Physics Department, State University of New York at Stony Brook, Stony Brook, New York 11794
• OSTI ID: 5959729
• Journal Information: Phys. Rev. C; (United States), Vol. 36:5
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
PRASEODYMIUM 134
E2-TRANSITIONS
M1-TRANSITIONS
ROTATIONAL STATES
PROMETHIUM 136
ALPHA PARTICLES
ALUMINIUM 27 REACTIONS
ASYMMETRY
CADMIUM 114 TARGET
COINCIDENCE METHODS
HEAVY ION FUSION REACTIONS
HIGH SPIN STATES
MAGNESIUM 24 REACTIONS
MEV RANGE 100-1000
NEUTRONS
ODD-ODD NUCLEI
PROTONS
TIN 116 TARGET
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COUNTING TECHNIQUES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FERMIONS
HADRONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
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MEV RANGE
MINUTES LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PRASEODYMIUM ISOTOPES
PROMETHIUM ISOTOPES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
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651720* - Nuclear Properties & Reactions
A=90-149
Experimental