Exploring the crossover between high-energy-density plasma and ultracold neutral plasma physics
نویسندگان
چکیده
منابع مشابه
Plasma oscillations and expansion of an ultracold neutral plasma
We report the observation of plasma oscillations in an ultracold neutral plasma. With this collective mode we probe the electron density distribution and study the expansion of the plasma as a function of time. For classical plasma conditions, i.e., weak Coulomb coupling, the expansion is dominated by the pressure of the electron gas and is described by a hydrodynamic model. Discrepancies betwe...
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We report the creation of an ultracold neutral plasma by photoionization of laser-cooled xenon atoms. The charge carrier density is as high as 2 3 109 cm23, and the temperatures of electrons and ions are as low as 100 mK and 10 mK, respectively. Plasma behavior is evident in the trapping of electrons by the positive ion cloud when the Debye screening length becomes smaller than the size of the ...
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We report the results of simulations that explain many properties of ultracold neutral plasmas. We find that three-body recombination is important at very low temperatures since it is a heating mechanism for the electron gas and it preferentially removes the slow ions from the plasma. We also find that collisions between cold electrons and Rydberg atoms are an important source of electron heati...
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The heating of dense matter to extreme temperatures motivates the development of powerful lasers1–4. However, the barrier the critical electron density imposes to light penetration into ionized materials results in the deposition of most of the laser energy into a thin surface layer at typically only 0.1% of solid density. Here, we demonstrate that trapping of femtosecond laser pulses of relati...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2019
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.5119144