Polarization and intensity spectra for Mg-Ne and Mg-Ar fractional collisions

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.1987· OSTI ID:6023571

Olsgaard, D A; Lasell, R A; Havey, M D; Sieradzan, A ^[1]

---

1. Physics Department, Old Dominion University, Norfolk, Virginia 23529 (United States)

Extensive experimental studies of Mg-Ne and Mg-Ar fractional collisions are reported. In the fractional-collision process, two-color, two-photon absorption takes place during a single binary collision. Polarization and relative intensity spectra were measured in an approximately [plus minus]50-cm[sup [minus]1] range around the atomic Mg 3[ital s] [sup 1][ital S][sub 0][r arrow]3[ital p] [sup 1][ital P][sub 1][r arrow]5[ital s] [sup 1][ital S][sub 0] two-photon resonance. The generally-weak-field spectra show a remarkable phenomenology associated with the relative linear-polarization directions of the two exciting laser beams and with their separate detunings from atomic one-photon resonance. The polarization and relative absorption spectra display effects due to relative detuning, multiple Condon points, and laser intensity. Details of our experimental approach, and spectra for the process in Mg-Ar and Mg-Ne are presented and discussed. The data are seen to contain information on the short-range collision dynamics of the Mg--rare-gas pairs, and on the development of the alignment over the course of the collision.

• OSTI ID: 6023571
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:3; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664200 -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ABSORPTION SPECTRA
ALKALINE EARTH METALS
AMPLITUDES
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BINARY ENCOUNTER METHOD
CALCULATION METHODS
COLLISIONS
COLOR
ELEMENTS
ENERGY ABSORPTION
FLUIDS
GASES
LASERS
MAGNESIUM
METALS
MULTI-PHOTON PROCESSES
NEON
NONMETALS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
POLARIZATION
PROBES
RARE GASES
RESONANCE
SORPTION
SPECTRA