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Single color photoassociation spectroscopy of ⁶Li₂ and ⁸⁵Rb₂

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Title: Single color photoassociation spectroscopy of ⁶Li₂ and ⁸⁵Rb₂
Author: Haw, Magnus
Issue Date: 2012-09
Publicly Available in cIRcle 2012-10-09
Citation: Haw, Magnus. 2012. Single color photoassociation spectroscopy of ⁶Li₂ and ⁸⁵Rb₂. Undergraduate Honours Thesis. Department of Physics and Astronomy. University of British Columbia.
Series/Report no. University of British Columbia. Physics & Astronomy Undergraduate Honours Theses, PHYS 449, 2012
Abstract: Single color photoassociation (PA) of ⁸⁵Rb₂ and ⁶Li₂ was achieved in an optical dipole trap with the goal of measuring new vibrational levels of the 1³∑g state of ⁶Li₂. Initial benchmark tests using Rb were performed to determine the optimum conditions for observing photoassociation on the apparatus: >.5 kW/cm² PA laser intensity, high density, low temperature (∼ 10ɲK), and long hold times (>1s). These tests with Rb also revealed discrepancies between dipole trap PA data and spectra taken in a magneto-optic trap on another experiment (MAT). Initial calculations for the locations of the ⁶Li₂ lines were carried out using fitted potentials provided to us by Nikesh Dattani [5]. We observed seven ⁶Li₂ PA lines that were within 1 cm⁻¹ of the predicted values. Because of this good agreement between theory and measurement for all seven lines, we are confident that these lines are indeed vibrational levels of the 1³∑g state of Li₂. Additional studies of two of these peaks revealed five or six-fold splitting due to the magnetic field.
Affiliation: Physics and Astronomy, Dept of
URI: http://hdl.handle.net/2429/43353
Peer Review Status: Unreviewed
Scholarly Level: Undergraduate

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