Steady-State Ultracold Plasma
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2022
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| _version_ | 1866912053520760832 |
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| author | Zelener, B. B. Vilshanskaya, E. V. Morozov, N. V. Saakyan, S. A. Bobrov, A. A. Zelener, B. V. |
| author_facet | Zelener, B. B. Vilshanskaya, E. V. Morozov, N. V. Saakyan, S. A. Bobrov, A. A. Zelener, B. V. |
| contents | A strongly coupled ultracold plasma can be used as an excellent test platform for studying many-body interactions associated with various plasma phenomena. In this paper we discuss an approach that makes possible creation of the steady-state ultracold plasma having various densities and temperatures by means of continuous two-step optical excitation of calcium atoms in the MOT. The parameters of the plasma are studied using laser-induced fluorescence of calcium ions. The experimental results are well described by a simple theoretical model involving equilibration of the continuous source of charged particles by the hydrodynamical ion outflux and three-body recombination. The strongly coupled plasma with the peak ion density of $6\cdot10^5$ cm$^{-3}$ and the minimum electron temperature near 2 K has been prepared. Our steady-state approach in combination with the strong magnetic confinement of the plasma will make it possible to reach extremely strong coupling in such system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_04389 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Steady-State Ultracold Plasma Zelener, B. B. Vilshanskaya, E. V. Morozov, N. V. Saakyan, S. A. Bobrov, A. A. Zelener, B. V. Plasma Physics Optics A strongly coupled ultracold plasma can be used as an excellent test platform for studying many-body interactions associated with various plasma phenomena. In this paper we discuss an approach that makes possible creation of the steady-state ultracold plasma having various densities and temperatures by means of continuous two-step optical excitation of calcium atoms in the MOT. The parameters of the plasma are studied using laser-induced fluorescence of calcium ions. The experimental results are well described by a simple theoretical model involving equilibration of the continuous source of charged particles by the hydrodynamical ion outflux and three-body recombination. The strongly coupled plasma with the peak ion density of $6\cdot10^5$ cm$^{-3}$ and the minimum electron temperature near 2 K has been prepared. Our steady-state approach in combination with the strong magnetic confinement of the plasma will make it possible to reach extremely strong coupling in such system. |
| title | Steady-State Ultracold Plasma |
| topic | Plasma Physics Optics |
| url | https://arxiv.org/abs/2212.04389 |