Excited-State Magnesium-Rare Gas Optical Collisions

<p>Polarization and intensity spectra have been obtained for excited-state magnesium (3s3p ¹P₁) - rare gas optical collisions. The magnesium was excited by a linearly polarized laser tuned to the 3s²1s₀ → 3s3p ¹P₁ atomic transition at 285 nm. A second linearly polarized laser was tuned near the 3s3p ¹P₁ → 3s5s ¹S₀ transition at 571 nm (experiment A) and near the 3s3p ¹P₁ → 3s4d ¹D₂ transition at 553 nm (experiment B). The polarization vector of the second laser was oriented either parallel or perpendicular to the polarization direction of the first laser. The absorption of nonresonant light from the second laser, possible only during a collision, was monitored by cascade fluorescence from the 3s²¹S₀ ← 3s4p ¹P₁ transition at 203 nm. For each detuning of the second laser from resonance, the degree of linear polarization and the intensity were measured. For experiment A, argon and neon were used as rare gases. For experiment B, argon was the rare gas used. For experiment B, fluorescence from the 3s3p ¹P₁ ← 3s5s ¹S₀ transition, and the 3s3p³P_j ← 3s5s ³S₁ transition at 333 nm were also measured in an attempt to observe the region of inelastic transitions in the molecular states. No inelastic branching was observed in this experiment.</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date.available

1995

Author dc:creator

• Lasell, Rosemary A.

Contributors dc:contributor

• Mark D. Havey
• Leposava Vuskovic
• Charles Hyde-Wright
• Rocco Schiavilla
• A. Dharamsi

• Magnesium
• Rare gas
• Atomic, Molecular and Optical Physics

Statement dc:rights

• <p>In Copyright. URI: <a href="http://rightsstatements.org/vocab/InC/1.0/">http://rightsstatements.org/vocab/InC/1.0/</a> This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).</p>

Repository record dc:identifier

https://digitalcommons.odu.edu/physics_etds/53

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:physics_etds-1061