Accession Number : ADA193052

Title :   Alkali I*S Wall Relaxation in Dichlorodimethylsilane Coated Resonance Cells.

Descriptive Note : Technical rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA CHEMISTRY AND PHYSICS LAB

Personal Author(s) : Camparo, James C

PDF Url : ADA193052

Report Date : 01 Jan 1988

Pagination or Media Count : 31

Abstract : Alkali I.S wall relaxation rates for Pyrex resonance cells coated with dichlorodimethylsilane have been studied. In particular, by considering the ratio of the Rb85 wall relaxation rate to the Rb87 wall relaxation rate, evidence is presented showing that dimethylsiloxane surfaces and alkane (paraffin) surfaces relax alkali polarization with similar interaction strengths and correlation times. This conclusion indicates that the outermost functional group of an organic surface molecule has the primary influence on the alkali polarization's surface relaxation. Keywords: Atomic clocks, Polarization relaxation, Rubidium frequency standard, Optical pumping.

Descriptors :   *ATOMIC CLOCKS, *CELLS, *COATINGS, *RESONANCE, *SILANES, *METHYL RADICALS, ALKALI METAL COMPOUNDS, CORRELATION, FREQUENCY STANDARDS, HEAT RESISTANT GLASS, INTERACTIONS, METHYL RADICALS, MOLECULES, OPTICAL PUMPING, POLARIZATION, RATIOS, RELAXATION, RUBIDIUM, SILOXANES, STRENGTH(GENERAL), SURFACES, WALLS

Subject Categories : Organic Chemistry
      Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE