Implications of the Trapping-Desorption and Direct Inelastic Scattering Channels on Dicke-Narrowed Lineshapes.
Abstract
The Dicke-narrowed lineshape of an atom in a wall-coated, bufferless, atomic storage cell is composed of two parts, a sharp central spike and a broad underlying pedestal. To understand the pedestal shape, we find that it is necessary to account for various atom-surface scattering channels. Conversely, analysis of the pedestal shape yields information concerning these scattering channels. In particular, nearly Doppler-broadened pedestals, observed for alkali hyperfine transitions in cells with paraffin coatings, indicate that both a trapping-desorption channel and a direct inelastic/quasi-elastic channel are accessible in the atom-surface scattering process. Alternatively, the appearance of much narrower pedestals, observed in cells with dichlordimethylsilane coatings, indicates that the trapping desorption channel dominated the atom-surface scattering process. Keywords: Atomic storage cells, Microwave spectroscopy, Atomic physics, Hydrogen adsorption.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 12, 1988
- Accession Number
- ADA191410
Entities
People
- James C. Camparo
- Robert P. Frueholz
Organizations
- The Aerospace Corporation