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Degree

Master of Science, Miami University, Physics, 2010.

Abstract

Measurements of collisional depolarization cross sections play an important role in gaining valuable information about the interaction between inert and rare-gas atoms. A key element in understanding collisional dynamics is the detailed analysis of the polarization of the emit- ted photons. In order to investigate the collisional cross section of the excited J =1/2 cesium atoms, by collisions with the ground level argon atoms, experimental measurements were made studying circular polarization spectra. Orientation in the J =1/2 level was optically induced by circularly polarized light with a positive helicity. A two-photon double-resonance (6s²S_1/2 → 6p² P_1/2 → 10s²S_1/2) condition was achieved using nanosecond pulsed dye lasers, and the intensity of the cascade fluorescence was monitored in the presence of argon atoms ranging from 10^-4 torr to 100 torr.

Subject Headings

Atoms and Subatomic Particles; Optics; Physical Chemistry; Physics; Quantum Physics; Radiation

Keywords

Polarization Spectroscopy; Atomic Physics; Pump-probe; Cesium; collisional cross-section; buffer gas

Committee / Advisors

Burcin Bayram, PhD (Advisor)
Samir Bali, PhD (Committee Member)
Perry Rice, PhD (Committee Member)

Pages

73p.

Document number: miami1292444234
Permalink: http://rave.ohiolink.edu/etdc/view?acc_num=miami1292444234

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