Effective collinear optical pumping for nuclear spin polarization
| Autor: | Gi Dong Kim, Sung Jong Park, Ju Hahn Lee, Yong Kyun Kim, Taeksu Shin |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics education.field_of_study Zeeman effect Population Statistical and Nonlinear Physics Polarization (waves) Atomic and Molecular Physics and Optics Atomic coherence Magnetic field Optical pumping symbols.namesake Beamline symbols Physics::Accelerator Physics Physics::Atomic Physics Atomic physics education Hyperfine structure |
| Zdroj: | Journal of the Optical Society of America B. 31:2278 |
| ISSN: | 1520-8540 0740-3224 |
| Popis: | By numerically solving the density matrix equations, we show that the laser frequency ramping method by means of position-dependent Zeeman splitting can efficiently polarize nuclear spin of atoms/ions in an accelerator beamline. This minimizes a quantum phenomenon, coherent population trapping, which limits the optical pumping efficiency in the polarized beamline for radioactive nuclear spin polarization. We consider the Li8 atomic system interacting with two circularly polarized laser beams in the presence of time-dependent magnetic field. From numerical results, we find that optimum frequency ramping allows efficient optical pumping for a short interaction time, e.g., 2 μs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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