dorsal/arxiv
View SchemaSelective Reflection Spectroscopy on the UV Third Resonance Line of Cs : Simultaneous Probing of a van der Waals Atom-Surface Interaction Sensitive to Far IR Couplings and of Interatomic Collisions
| Authors | Pedro Chaves De Souza Segundo, Ismahène Hamdi, Michèle Fichet, Daniel Bloch, Martial Ducloy |
|---|---|
| Categories | |
| ArXiv ID | physics/0701303 |
| URL | https://arxiv.org/abs/physics/0701303 |
| DOI | 10.1134/S1054660X07070134 |
Abstract
We report on the analysis of FM selective reflection experiments on the 6S1/2->8P3/2 transition of Cs at 388 nm, and on the measurement of the surface van der Waals interaction exerted by a sapphire interface on Cs(8P3/2). Various improvements in the systematic fitting of the experiments have permitted to supersede the major difficulty of a severe overlap of the hyperfine components, originating on the one hand in a relatively small natural structure, and on the other hand on a large pressure broadening imposed by the high atomic density needed for the observation of selective reflection on a weak transition. The strength of the van der Waals surface interaction is evaluated to be 73$\pm$10 kHz.$\mu$m3. An evaluation of the pressure shift of the transition is also provided as a by-product of the measurement. We finally discuss the significance of an apparent disagreement between the experimental measurement of the surface interaction, and the theoretical value calculated for an electromagnetic vacuum at a null temperature. The possible influence of the thermal excitation of the surface is evoked, because, the dominant contributions to the vW interaction for Cs(8P3/2) lie in the far infrared range.
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"abstract": "We report on the analysis of FM selective reflection experiments on the\n6S1/2-\u003e8P3/2 transition of Cs at 388 nm, and on the measurement of the surface\nvan der Waals interaction exerted by a sapphire interface on Cs(8P3/2). Various\nimprovements in the systematic fitting of the experiments have permitted to\nsupersede the major difficulty of a severe overlap of the hyperfine components,\noriginating on the one hand in a relatively small natural structure, and on the\nother hand on a large pressure broadening imposed by the high atomic density\nneeded for the observation of selective reflection on a weak transition. The\nstrength of the van der Waals surface interaction is evaluated to be 73$\\pm$10\nkHz.$\\mu$m3. An evaluation of the pressure shift of the transition is also\nprovided as a by-product of the measurement. We finally discuss the\nsignificance of an apparent disagreement between the experimental measurement\nof the surface interaction, and the theoretical value calculated for an\nelectromagnetic vacuum at a null temperature. The possible influence of the\nthermal excitation of the surface is evoked, because, the dominant\ncontributions to the vW interaction for Cs(8P3/2) lie in the far infrared\nrange.",
"arxiv_id": "physics/0701303",
"authors": [
"Pedro Chaves De Souza Segundo",
"Ismah\u00e8ne Hamdi",
"Mich\u00e8le Fichet",
"Daniel Bloch",
"Martial Ducloy"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1134/S1054660X07070134",
"title": "Selective Reflection Spectroscopy on the UV Third Resonance Line of Cs : Simultaneous Probing of a van der Waals Atom-Surface Interaction Sensitive to Far IR Couplings and of Interatomic Collisions",
"url": "https://arxiv.org/abs/physics/0701303"
},
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