Accession Number:

AD0647244

Title:

THE MOSSBAUER EFFECT IN SURFACE STUDIES FE57 ON W AND ON AG,

Descriptive Note:

Corporate Author:

ILLINOIS UNIV URBANA DEPT OF PHYSICS

Personal Author(s):

• Burton,J. W.
• Godwin,R. P.

Report Date:

1966-01-01

Pagination or Media Count:

29.0

Abstract:

The Mossbauer effect at crystal surfaces is discussed. Fe57 on the surface of W and Ag has been measured under ultra-high vacuum. The W experiment yielded Debye temperatures of 406 plus or minus 12, 354 plus or minus 30, and 255 plus or minus 30K in the bulk, along the surface normal, and parallel to the surface, respectively. In Ag the bulk Debye temperature was 253 plus or minus 12K while the surface value was 380 plus or minus 30K and showed no angular dependence. Quadrupole splitting in both experiments indicated surface field gradients of about -3 x 10 to the 16th power Voltscm2. Author

Descriptors:

• (*MOSSBAUER EFFECT
• *SURFACE PROPERTIES)
• VACUUM
• IRON
• DOPPLER EFFECT
• SILVER
• ALGEBRA
• GAMMA RAYS
• RECOIL ATOMS

Subject Categories:

• Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE