dorsal/arxiv
View SchemaUltracold Neutral Plasmas
| Authors | Thomas C. Killian, Y. C. Chen, P. Gupta, S. Laha, Y. N. Martinez, P. G. Mickelson, S. B. Nagel, A. D. Saenz, C. E. Simien |
|---|---|
| Categories | |
| ArXiv ID | physics/0410019 |
| URL | https://arxiv.org/abs/physics/0410019 |
| DOI | 10.1088/0741-3335/47/5A/021 |
Abstract
Ultracold neutral plasmas are formed by photoionizing laser-cooled atoms near the ionization threshold. Through the application of atomic physics techniques and diagnostics, these experiments stretch the boundaries of traditional neutral plasma physics. The electron temperature in these plasmas ranges from 1-1000 K and the ion temperature is around 1 K. The density can approach $10^{11}$ cm$^{-3}$. Fundamental interest stems from the possibility of creating strongly-coupled plasmas, but recombination, collective modes, and thermalization in these systems have also been studied. Optical absorption images of a strontium plasma, using the Sr$^+$ ${^2S\_{1/2}} -> {^2P\_{1/2}}$ transition at 422 nm, depict the density profile of the plasma, and probe kinetics on a 50 ns time-scale. The Doppler-broadened ion absorption spectrum measures the ion velocity distribution, which gives an accurate measure of the ion dynamics in the first microsecond after photoionization.
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"abstract": "Ultracold neutral plasmas are formed by photoionizing laser-cooled atoms near\nthe ionization threshold. Through the application of atomic physics techniques\nand diagnostics, these experiments stretch the boundaries of traditional\nneutral plasma physics. The electron temperature in these plasmas ranges from\n1-1000 K and the ion temperature is around 1 K. The density can approach\n$10^{11}$ cm$^{-3}$. Fundamental interest stems from the possibility of\ncreating strongly-coupled plasmas, but recombination, collective modes, and\nthermalization in these systems have also been studied. Optical absorption\nimages of a strontium plasma, using the Sr$^+$ ${^2S\\_{1/2}} -\u003e {^2P\\_{1/2}}$\ntransition at 422 nm, depict the density profile of the plasma, and probe\nkinetics on a 50 ns time-scale. The Doppler-broadened ion absorption spectrum\nmeasures the ion velocity distribution, which gives an accurate measure of the\nion dynamics in the first microsecond after photoionization.",
"arxiv_id": "physics/0410019",
"authors": [
"Thomas C. Killian",
"Y. C. Chen",
"P. Gupta",
"S. Laha",
"Y. N. Martinez",
"P. G. Mickelson",
"S. B. Nagel",
"A. D. Saenz",
"C. E. Simien"
],
"categories": [
"physics.plasm-ph"
],
"doi": "10.1088/0741-3335/47/5A/021",
"title": "Ultracold Neutral Plasmas",
"url": "https://arxiv.org/abs/physics/0410019"
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