A dual-isotope rubidium comagnetometer to search for anomalous long-range spin-mass (spin-gravity) couplings of the proton
| Autor: | D. F. Jackson Kimball, Julian Valdez, Caitlin Montcrieffe, Jackie Kremer, Ian Lacey, Rodrigo Peregrinaramirez, Claudio Sanchez, Cesar Rios, Jerlyn L. Swiatlowski, Jordan Dudley |
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| Rok vydání: | 2013 |
| Předmět: |
Physics
Spins Proton 010308 nuclear & particles physics General Physics and Astronomy chemistry.chemical_element 01 natural sciences 7. Clean energy Rubidium Magnetic field Optical pumping chemistry 0103 physical sciences Precession Physics::Atomic Physics Atomic physics Optical rotation 010306 general physics Spin (physics) |
| Zdroj: | Annalen der Physik. 525:514-528 |
| ISSN: | 0003-3804 |
| Popis: | The experimental concept of a search for a long-range coupling between rubidium (Rb) nuclear spins and the mass of the Earth is described. The experiment is based on simultaneous measurement of the spin precession frequencies for overlapping ensembles of Rb-85 and Rb-87 atoms contained within an evacuated, antirelaxation-coated vapor cell. Rubidium atoms are spin-polarized in the presence of an applied magnetic field by synchronous optical pumping with circularly polarized laser light. Spin precession is probed by measuring optical rotation of far-off-resonant, linearly polarized laser light. Simultaneous measurement of Rb-85 and Rb-87 spin precession frequencies enables suppression of magnetic-field-related systematic effects. The nuclear structure of the Rb isotopes makes the experiment particularly sensitive to anomalous spin-dependent interactions of the proton. Experimental sensitivity and a variety of systematic effects are discussed, and initial data are presented. |
| Databáze: | OpenAIRE |
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