High-resolution study of isomer shifts of the 6.2-keV $gamma$ rays of tantalum-181
Journal Article
·
· Phys. Rev., B, v. 8, no. 5, pp. 1912-1923
OSTI ID:4383029
Isomer shifts of the 6.2-keV gamma rays of /sup 181/Ta are reported for dilute impurities of tantalum in transition-metal hosts and for several tantalum compounds. Thc experimental line-shift-to-linewidth ratios represent an improvement of the resolution by more than an order of magnitude relative to other Mossbauer resonances. For /sup 181/Ta impurities in transition-metal hoats a systematic variation of the electron density at the nucleus is found. From a comparison of the isomer shifts of /sup 181/Ta impurities in transition-metal host with those observed for impurities of , a value of DELTA = - 5 x l0/sup 2 / fm/ sup 2/ can be derived for the change of the mean-squared nuclear- charge radius. The ncgative sign of DELTA is in agreement with the observed variation of the isomer shifts of LiTaO/sub 3, NaTaO/sub 3/, and KTaO/ sub 3, as well as wi th the isomer shift found for TaC. (auth)
- Research Organization:
- Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
- NSA Number:
- NSA-29-013191
- OSTI ID:
- 4383029
- Journal Information:
- Phys. Rev., B, v. 8, no. 5, pp. 1912-1923, Journal Name: Phys. Rev., B, v. 8, no. 5, pp. 1912-1923; ISSN PLRBA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Moessbauer spectroscopy of the 6.2 keV γ ray transition of 181Ta
Mössbauer Isomer Shifts of the 6.2-keV Gamma Rays of Tantalum-181
Isomer shifts of the 6. 2 keV nuclear transition of Ta-181 in sulvanite type ternary phases Cu/sub 3/TaX/sub 4/ (X=S,Se,Te) /sup +/
Thesis/Dissertation
·
Fri Sep 01 00:00:00 EDT 1972
·
OSTI ID:4596021
Mössbauer Isomer Shifts of the 6.2-keV Gamma Rays of Tantalum-181
Conference
·
Sat Jan 27 23:00:00 EST 1973
·
OSTI ID:4481912
Isomer shifts of the 6. 2 keV nuclear transition of Ta-181 in sulvanite type ternary phases Cu/sub 3/TaX/sub 4/ (X=S,Se,Te) /sup +/
Journal Article
·
Fri Jun 01 00:00:00 EDT 1984
· Mater. Res. Bull.; (United States)
·
OSTI ID:6466132
Related Subjects
*TANTALUM 181-- NUCLEAR RADII
*TANTALUM ADDITIONS
*TANTALUM COMPOUNDS-- ELECTRONIC STRUCTURE
*TRANSITION ELEMENTS-- ELECTRONIC STRUCTURE
ELECTRIC CHARGES
GAMMA RADIATION
ISOMER SHIFT
KEV RANGE 01-10
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
*TANTALUM ADDITIONS
*TANTALUM COMPOUNDS-- ELECTRONIC STRUCTURE
*TRANSITION ELEMENTS-- ELECTRONIC STRUCTURE
ELECTRIC CHARGES
GAMMA RADIATION
ISOMER SHIFT
KEV RANGE 01-10
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies