Measurement and analysis of muonic x rays of 176,177,178,179,180Hf

Journal Article · Sun Jul 01 04:00:00 EDT 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.30.350· OSTI ID:6234079

Tanaka, Y; Steffen, R M; Shera, E B; Reuter, W; Hoehn, M V; Zumbro, J D

Monopole and quadrupole charge distributions of /sup 176/Hf, /sup 177/Hf, /sup 178/Hf, /sup 179/Hf, and /sup 180/Hf were investigated by muonic atom K and L x-ray measurements. The model-independent Barrett charge radii R/sub k/ and the isotope shifts ..delta..R/sub k/ were measured, and values of and ..delta.. were deduced. A weak odd-even staggering of the nuclear charge radii was observed for the series /sup 176 -178/Hf and /sup 178 -180/Hf. A large negative isomer shift was observed in the 2/sup +/ state of the /sup 176/Hf nucleus, a fact that existing theories do not explain. The quadrupole moments of the first excited states of the hafnium nuclei were determined to be Q/sup 176/(2/sup +/) = -2.10(2) e b, Q/sup 177/((9/2)/sup -/) = 1.30(2) e b, Q/sup 178/(2/sup +/) = -2.02(2) e b, Q/sup 179/((11/2)/sup +/) = 1.88(3) e b, and Q/sup 180/(2/sup +/) = -2.00(2) e b. These quadrupole moments and the simultaneously determined B(E2) values for the respective nuclei are in satisfactory agreement with the predictions of the axially symmetric rotor model.

• Research Organization: Department of Physics, Purdue University, West Lafayette, Indiana 47907
• OSTI ID: 6234079
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 30:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

640303 -- Atomic
Molecular & Chemical Physics-- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules
651821* -- Nuclear Properties & Reactions
A=150-189
Experimental-- Mass
Abundance
& Binding Energy-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CHARGE DISTRIBUTION
DATA
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HAFNIUM
HAFNIUM 176
HAFNIUM 177
HAFNIUM 178
HAFNIUM 179
HAFNIUM 180
HAFNIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMER SHIFT
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
K SHELL
L SHELL
METALS
MONOPOLES
MUONIC ATOMS
NUCLEAR PROPERTIES
NUCLEAR RADII
NUCLEAR STRUCTURE
NUCLEI
NUMERICAL DATA
QUADRUPOLE MOMENTS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPECTRAL SHIFT
STABLE ISOTOPES
TRANSITION ELEMENTS
X-RAY SPECTRA