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), Vol. 35:5
• Country of Publication: United States
• Language: English

Related Subjects

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