Potassium spin polarization lifetime for a 30-carbon chain siloxane film
Author(s): Hibberd, Amber M.; Bergman, Susanna L.; Zhong, Yu Lin; Bernasek, Steven L.
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Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Hibberd, Amber M. | - |
dc.contributor.author | Bergman, Susanna L. | - |
dc.contributor.author | Zhong, Yu Lin | - |
dc.contributor.author | Bernasek, Steven L. | - |
dc.date.accessioned | 2020-10-30T18:42:50Z | - |
dc.date.available | 2020-10-30T18:42:50Z | - |
dc.date.issued | 2012-11-07 | en_US |
dc.identifier.citation | Hibberd, Amber M., Bergman, Susanna L., Zhong, Yu Lin, Bernasek, Steven L. (2012). Potassium spin polarization lifetime for a 30-carbon chain siloxane film. The Journal of Chemical Physics, 137 (17), 174703 - 174703. doi:10.1063/1.4761934 | en_US |
dc.identifier.issn | 0021-9606 | - |
dc.identifier.uri | http://arks.princeton.edu/ark:/88435/pr1s51z | - |
dc.description.abstract | The siloxane film derived from the 30-carbon chain triacontyltrichlorosilane (TCTS) is studied as an anti-relaxation coating for atomic vapor cells. The longitudinal spin relaxation lifetime of optically pumped potassium atoms in the presence of TCTS is measured and the average number of non-relaxing atom-wall collisions, or bounces, enabled by the coated surface is determined. X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) of TCTS were performed to investigate changes in chemical states and surface morphology of TCTS arising from K atom deposition on the film surface. TCTS was found to give approximately 530 bounces. Following lifetime measurements, K2p signals were clearly observed in XPS spectra. AFM images display non-preferential K deposition on the TCTS surface, however additional AFM studies with a TCTS surface exposed to Rb atoms show deposition occurs along surface defects. In agreement, Rb is found to preferentially deposit along the step edges of an 18-carbon chain monolayer film derived from 1-Octadecene. Finally, AFM indicates a much smoother surface for a tetracontane coating relative to TCTS. The importance of siloxane surface morphology versus film thickness with respect to coating performance is discussed. | en_US |
dc.format.extent | 174703-1 - 174703-9 | en_US |
dc.language.iso | en_US | en_US |
dc.relation.ispartof | The Journal of Chemical Physics | en_US |
dc.rights | Final published version. Article is made available in OAR by the publisher's permission or policy. | en_US |
dc.title | Potassium spin polarization lifetime for a 30-carbon chain siloxane film | en_US |
dc.type | Journal Article | en_US |
dc.identifier.doi | doi:10.1063/1.4761934 | - |
dc.date.eissued | 2012-11-02 | en_US |
dc.identifier.eissn | 1089-7690 | - |
pu.type.symplectic | http://www.symplectic.co.uk/publications/atom-terms/1.0/journal-article | en_US |
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