Spectroscopy of Electronically Excited Xenon Dimers

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Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date

2012

Author dc:creator

• Wagner, Clark Jason

• Spectroscopy; xenon; gating; photomultiplier; fluorescence; crobar; linearity; e-beam; pmt; dynodes

Statement dc:rights

• 2004 Wagner ©

Language dc:language

en

Identifier

Rydberg energy levels of the xenon diatomic excimer (Xe2) are probed in the afterglow of a xenon discharge by photoexciting Rydberg ! Rydberg transitions of the molecule and monitoring the suppression of the second continuum emission (See document for equation). Energy levels lying »18210 cm−1 (549 nm) and 12500-14800 cm−1 (675-800 nm) above the minimum (Te) of the metastable a3§+u (1u) state correlated, in the separated atom limit with Xe(6s3P2 + Xe(5p6 1S0)), are studied in detail. Spectra obtained in the 675-800 nm range have been analyzed and the following spectroscopic constants associated with the Xe2 (5)1g electronic state have been determined: (See document for equation). The spectra have tentatively been assigned to transitions between the (1)1u and (5)1g states of the molecule. Cross sections were measured and determined to be 10−17 cm2 for molecular features in the 675-800 nm range, and 8·10−17 cm2 for an atomic feature at 823.2 nm.

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/35204