Octupole deformation in /sup 227/Ac by single-proton stripping reactions: /sup 226/Ra(. cap alpha. , t)/sup 227/Ac and /sup 226/Ra(/sup 3/He,d)/sup 227/Ac

Journal Article · Fri Apr 01 00:00:00 EST 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.37.1407· OSTI ID:5291203

Martz, H E; Sheline, R K; Lanier, R G; Hoff, R W; Struble, G L; Decman, D J; Burke, D G; Chasman, R R; Naumann, R A

A radioactive /sup 226/Ra (t/sub 1/2/ = 1600 yr) target was used to study the /sup 226/Ra(..cap alpha..,t)/sup 227/Ac and /sup 226/Ra(/sup 3/He,d)/sup 227/Ac reactions at an incident energy of 30 MeV for both the ..cap alpha.. and /sup 3/He particles. These measurements have confirmed most levels observed in earlier decay-scheme studies, and give evidence for 11 additional levels. Several of the new levels were used in the tentative assignment of two K/sup ..pi../ = (5/2/sup +- / bands. The experimental data are compared with results from the Nilsson model and a nonadiabatic, rigid, reflection-asymmetric rotor (octupole) model. Although the order and spacing of levels in this mass region can be explained better by models that include an octupole deformation, the spectroscopic strengths in /sup 227/Ac are in better agreement with those calculated for the reflection-symmetric potential.

• Research Organization: Nuclear Chemistry Division, Lawrence Livermore National Laboratory, Livermore, California 94550
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5291203
• Journal Information: Phys. Rev. C; (United States), Vol. 37:4
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIUM 227
ENERGY LEVELS
ALPHA REACTIONS
STRIPPING
HELIUM 3 REACTIONS
RADIUM 226 TARGET
COLLECTIVE MODEL
DEUTERONS
EXPERIMENTAL DATA
MEV RANGE 10-100
NILSSON-MOTTELSON MODEL
NUCLEAR DEFORMATION
NUCLEAR POTENTIAL
SHELL MODELS
SYMMETRY
TRITONS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIUM ISOTOPES
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DATA
DEFORMATION
DIRECT REACTIONS
ENERGY RANGE
HEAVY NUCLEI
INFORMATION
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
POTENTIALS
RADIOISOTOPES
TARGETS
TRANSFER REACTIONS
YEARS LIVING RADIOISOTOPES
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental