TY - JOUR
T1 - Characterization of violet emission from Rb optical pumping cells used in laser-polarized xenon NMR experiments
AU - Saha, Indrajit
AU - Nikolaou, Panayiotis
AU - Whiting, Nicholas
AU - Goodson, Boyd M.
N1 - Funding Information:
We thank Matthew Rosen (HSCfA) for providing design assistance regarding the optical pumping cell, and Ken Owens (UMSL) for his expert glassblowing and advice. We also thank Nick Kuzma (Princeton), Mike Barlow (Nottingham), Mark Conradi and Jason Leawoods (WUSTL), and the Bill Hersman group (New Hampshire) for helpful discussions, and Xiaoxia Li, Matt McCarroll, Kaushik Balakrishnan, and Zeyad Al-Talla (SIUC) for instrument assistance. B.M.G. is a Cottrell Scholar of Research Corporation. Work at SIUC is supported by NSF (CHE-03492550), the ACS PRF, Research Corp., and SIU MTC.
PY - 2006/9/20
Y1 - 2006/9/20
N2 - Visible emission from Rb optical pumping cells was characterized under a range of conditions relevant to the production of laser-polarized xenon (including temperature, partial pressures, and D1-resonant 795 nm laser power). Bright 421 nm (6P → 5S) emission was consistent with energy-pooling processes of the type: Rb*(5P1/2) + Rb*(5P1/2,3/2) → Rb*(6P1/2,3/2) + Rb(5S1/2), with processes transiting through 5D states likely contributing at higher temperatures/lower N2 partial pressures. Under such conditions a number of Rb lines may be observed, indicating population of Rb states to ≥9D (∼31 822 cm-1). Such energies exceed those required for efficient production of laser-induced plasma.
AB - Visible emission from Rb optical pumping cells was characterized under a range of conditions relevant to the production of laser-polarized xenon (including temperature, partial pressures, and D1-resonant 795 nm laser power). Bright 421 nm (6P → 5S) emission was consistent with energy-pooling processes of the type: Rb*(5P1/2) + Rb*(5P1/2,3/2) → Rb*(6P1/2,3/2) + Rb(5S1/2), with processes transiting through 5D states likely contributing at higher temperatures/lower N2 partial pressures. Under such conditions a number of Rb lines may be observed, indicating population of Rb states to ≥9D (∼31 822 cm-1). Such energies exceed those required for efficient production of laser-induced plasma.
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U2 - 10.1016/j.cplett.2006.07.074
DO - 10.1016/j.cplett.2006.07.074
M3 - Article
AN - SCOPUS:33748150029
SN - 0009-2614
VL - 428
SP - 268
EP - 276
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -