Study of muonic atoms in the A = 40 to 70 and A = 100 to 130 mass regions (nuclear charge radii, isotope and isotone shifts) and in the Sm-Gd and W-Os-Pt transition regions (electric monopole and quadrupole moments). Progress report No. 5, December 1, 1979-October 15, 1980. [Dept. of Physics, Purdue Univ. , 12/1/79-10/15/80]
The muonic x-ray spectra of the stable Ru and Pd isotope have been measured, and the data have been analyzed in terms of the effective Barrett radii and in terms of isotope shifts. The effects of the neutron subshell closure on the ..delta..N = 2 isotopes shifts at N = 56 is much smaller in the Ru (Z = 44) isotopes as compared to the recently observed effect in the Mo (Z = 42) isotope shifts. This is the first time a pronounced difference in ..delta..N = 2 isotope shifts has been observed for different values of Z. The muonic x-ray measurements on 24 stable isotopes of Cd, Sn, Te, and Ba have been completed and the analysis of the 74 spectra (including calibration spectra) is progressing. The work on the quadrupole parameters of the even-A Os nuclei has been completed. The analysis of the muonic x-ray spectra of the even-A Gd isotopes is near completion. Monopole and quadrupole charge parameters of the 0/sub g//sup +/ and 2/sub g//sup +/ states (and in the case of /sup 160/Gd, of the 3/sup -/ state) have been determined. The model dependence of extracting point-quadrupole matrix elements from muonic x-ray measurements has been carefully investigated. It was found that neither the ..beta..-vibration nor the ..gamma..-vibration modes influence the value of the extracted point moments by more than 2 percent. The problem of nuclear polarization corrections was examined.
- Research Organization:
- Purdue Univ., Lafayette, IN (USA). Dept. of Physics
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AS02-76ER02875
- OSTI ID:
- 6658621
- Report Number(s):
- COO-2875-15; TRN: 81-003420
- Country of Publication:
- United States
- Language:
- English
Similar Records
Study of muonic atoms in the A = 40 - 70 and A = 100 - 130 mass regions (nuclear charge radii, isotope and isotone shifts) and in the Sm-Gd and W-Os-Pt transition regions (electric monopole and quadrupole moments). Progress report, November 15, 1978-December 1, 1979
Measurement of the charge moments of the even-even gadolinium nuclei by muonic atoms
Related Subjects
MUONIC ATOMS
RESEARCH PROGRAMS
X-RAY SPECTRA
OSMIUM
PALLADIUM
RUTHENIUM
TRANSITION ELEMENTS
SPECTRAL SHIFT
ATOMS
ELEMENTS
METALS
PLATINUM METALS
REFRACTORY METALS
SPECTRA
640303* - Atomic
Molecular & Chemical Physics- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules