Seltzer, S. J. ; Michalak, D. J. ; Donaldson, M. H. ; Balabas, M. V. ; Barber, S. K. ; Bernasek, S. L. ; Bouchiat, M.-A. ; Hexemer, A. ; Hibberd, A. M. ; Kimball, D. F. Jackson ; Jaye, C. ; Karaulanov, T. ; Narducci, F. A. ; Rangwala, S. A. ; Robinson, H. G. ; Shmakov, A. K. ; Voronov, D. L. ; Yashchuk, V. V. ; Pines, A. ; Budker, D. (2010) Investigation of antirelaxation coatings for alkali-metal vapor cells using surface science techniques Journal of Chemical Physics, 133 (14). p. 144703. ISSN 0021-9606
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Official URL: http://doi.org/10.1063/1.3489922
Related URL: http://dx.doi.org/10.1063/1.3489922
Abstract
Many technologies based on cells containing alkali-metal atomic vapor benefit from the use of antirelaxation surface coatings in order to preserve atomic spin polarization. In particular, paraffin has been used for this purpose for several decades and has been demonstrated to allow an atom to experience up to 10 000 collisions with the walls of its container without depolarizing, but the details of its operation remain poorly understood. We apply modern surface and bulk techniques to the study of paraffin coatings in order to characterize the properties that enable the effective preservation of alkali spin polarization. These methods include Fourier transform infrared spectroscopy, differential scanning calorimetry, atomic force microscopy, near-edge x-ray absorption fine structure spectroscopy, and x-ray photoelectron spectroscopy. We also compare the light-induced atomic desorption yields of several different paraffin materials. Experimental results include the determination that crystallinity of the coating material is unnecessary, and the detection of CC double bonds present within a particular class of effective paraffin coatings. Further study should lead to the development of more robust paraffin antirelaxation coatings, as well as the design and synthesis of new classes of coating materials.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Institute of Physics. |
ID Code: | 121097 |
Deposited On: | 09 Jul 2021 07:41 |
Last Modified: | 09 Jul 2021 07:41 |
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