Accession Number:

AD0711064

Title:

INTERFEROMETRIC MEASUREMENTS OF THE FAR-INFRARED REFRACTIVE INDEX OF SODIUM FLUORIDE AT LOW TEMPERATURES

Descriptive Note:

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS

Personal Author(s):

• Randall, Charles M.

Report Date:

1970-07-15

Pagination or Media Count:

25.0

Abstract:

The refractive index of sodium fluoride at cryogenic temperatures has been determined between 30 and 180cm from channel spectra obtained by Fourier spectroscopy. Fitting the measured refractive index to a Lorentz oscillator model we find a low frequency dielectric constant of 4.70 and a damping parameter varying from 3.3cm at 80K to less than 0.025cm at 10K.

Descriptors:

• *REFRACTIVE INDEX
• *FLUORIDES
• CRYOGENICS
• INTERFEROMETERS
• SODIUM COMPOUNDS

Subject Categories:

• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE