Accession Number:

AD0744597

Title:

Rayleigh Scattering Studies of NH4Cl at High Pressures,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF PHYSICS

Personal Author(s):

• Fritz, I. J.
• Cummins, H. Z.

Report Date:

1971-11-01

Pagination or Media Count:

5.0

Abstract:

The integrated Rayleigh intensity of NH4Cl in the region of the order-disorder transition line has been studied as a function of pressure and temperature. Increased scattering is observed near the tricritical point recently detected by Garland. Although the presence of domain scattering makes unambiguous interpretation of the data difficult, these data are consistent with the Landau-Ginzburg theory of critical opalescence.

Descriptors:

• *PHASE STUDIES
• *RAYLEIGH SCATTERING
• *AMMONIUM COMPOUNDS
• TEMPERATURE
• CHLORIDES
• LIGHT TRANSMISSION
• HIGH PRESSURE

Subject Categories:

• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE