Yrast states of /sup 216/Rn and the extent of a region of possible static intrinsic reflection asymmetry

Journal Article · Fri May 01 00:00:00 EDT 1987 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.35.1939· OSTI ID:6138641

Cottle, P D; Gai, M; Ennis, J F; Shriner, Jr, J F; Sterbenz, S M; Bromley, D A; Beausang, C W; Hildingsson, L; Piel, Jr, W F; Fossan, D B; others, and

We report the results of a study of the yrast excitation spectrum for /sup 216/Rn via the /sup 208/Pb(/sup 14/C,..cap alpha..2n)/sup 216/Rn reaction. Measurements of ..gamma..-..gamma.. coincidences, ..gamma..-ray angular distributions, and ..gamma..-x-ray coincidences were made. We propose a level spectrum up to J/sup ..pi../ = (10/sup +/) which does not exhibit the alternating parity structure observed in several isotopes of radium and thorium. From an examination of information on /sup 216/Rn and the neighboring nuclei, we can tentatively determine that the radon isotopes of masses 216 to 222 and the N = 128 isotones /sup 216/Ra and /sup 218/Th define a lower mass boundary of a region beyond which static intrinsic reflection asymmetric shapes may exist in the nuclear ground states.

• Research Organization: A.W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06511
• OSTI ID: 6138641
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 35:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651920* -- Nuclear Properties & Reactions
A=190-219
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
ALPHA PARTICLES
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYONS
CARBON 14 REACTIONS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
DATA
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVAPORATION MODEL
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FERMIONS
GAMMA SPECTRA
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
IONIZING RADIATIONS
ISOTONIC NUCLEI
ISOTOPES
LEAD 208 TARGET
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MICROSEC LIVING RADIOISOTOPES
NANOSEC LIVING RADIOISOTOPES
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
PARITY
PARTICLE PROPERTIES
RADIATIONS
RADIOISOTOPES
RADIUM 216
RADIUM ISOTOPES
RADON 216
RADON ISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPIN
TARGETS
THORIUM 218
THORIUM ISOTOPES
X RADIATION
YRAST STATES