Experimental study of optical properties of nonideal plasma within the electron concentration range 1017 cm−3 &lt; N e &lt; 1022 cm−3

Fedorovich, O.A.

doi:10.1134/s0018151x14040099

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…Certainly, the effect of "level non-realization", which experimentally manifests itself at electron concentrations corresponding to dense plasma, was not taken into account at that. At a concentration of 3 × 10 19 cm −3 , even the line H completely disappears from the emission (absorption) spectra [2]. Accordingly, the ionization from this and higher levels, as well as the recombination onto them, does not take place anymore.…”

Section: Lifetime Of Electrons In Dense Plasmamentioning

confidence: 96%

“…All absorption (emission) lines of hydrogen within the optical spectral interval disappear, including the most intensive line of Balmer series H (656.3 nm). Oxygen lines are also absent, because they have high excitation potentials, close to the ionization one, in this spectral range [2]. They appear only at the late stage of a plasma decay.…”

Section: Introductionmentioning

confidence: 93%

“…In dense plasma, the concentration of charges has a more considerable influence on the properties of atoms and ions than the temperature. This statement is valid for both the dependence of the decay factor on the electron concentration in dense plasma [10] and the dependence of the "optical gap" magnitude on the concentration of charges in low-temperature dense plasma [1,2].…”

Section: Lifetime Of Electrons In Dense Plasmamentioning

confidence: 99%

“…In our opinion, the growth of the lifetime of charged particles in dense plasma by several (up to six) orders of magnitude is associated with the "non-realization" of atomic levels and their large broadening in strong microfields taking place in dense plasma [2,13], as well as with the substantial ionization of atoms that occurs again under the conditions of production of nonideal plasma at pulsed discharges in water. The obtained experimental data will enable theorists to orient themselves, when developing theoretical models of recombination processes and calculating the lifetimes of charged particles in dense plasma.…”

Section: Lifetime Of Electrons In Dense Plasmamentioning

confidence: 99%

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Lifetime of electrons in Dense Plasma

Fedorovich¹,

Voitenko²

2017

Ukr. J. Phys.

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The experimentally determined average lifetimes of electrons and ions in the dense plasma of pulsed discharges in water are reported. The lifetimes of charged particles in dense plasma are shown to be practically independent of the time. The specific lifetime values are found to lie in a vicinity of 10 −5 s and vary from 5 × 10 −6 to 3 × 10 −5 s at various discharge stages, when the parameters of discharge plasma are changed. In particular, the concentration of electrons in plasma is changed from 10 15 to 10 22 cm −3 , and the temperature from 7 × 10 3 to 64 × 10 3 K. We explain this phenomenon by the "non-realization of levels" in the radiation spectra and by the strong broadening of observed spectral lines in high microfields of dense plasma, when the latter achieve values close to intraatomic ones. Experimental data obtained for the lifetimes of charged particles are compared with the results of theoretical calculations made by various authors. K e y w o r d s: nonideal plasma, pulsed discharges in water, electric microfields, lifetime of charged particles, recombination of charged particles.

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Section: Lifetime Of Electrons In Dense Plasmamentioning

confidence: 96%

Section: Introductionmentioning

confidence: 93%

Section: Lifetime Of Electrons In Dense Plasmamentioning

confidence: 99%

Section: Lifetime Of Electrons In Dense Plasmamentioning

confidence: 99%

See 2 more Smart Citations