scholarly journals Radiative power and electron cooling rates for oxygen in steady-state and transient plasmas at densities beyond the coronal limit

1986 ◽  
Author(s):  
C. Keane ◽  
C.H. Skinner
Keyword(s):  
Steady State ◽  
Electron Cooling ◽  
Cooling Rates ◽  
Radiative Power

scholarly journals Steady-state radiative cooling rates for low-density, high-temperature plasmas

1977 ◽  
Vol 20 (5) ◽  
pp. 397-439 ◽  
Author(s):  
D.E. Post ◽  
R.V. Jensen ◽  
C.B. Tarter ◽  
W.H. Grasberger ◽  
W.A. Lokke
Keyword(s):  
Steady State ◽  
High Temperature ◽  
Radiative Cooling ◽  
Low Density ◽  
Cooling Rates

Measurement of Momentum Cooling Rates with Electron Cooling at NAP-M

1979 ◽  
Vol 26 (3) ◽  
pp. 3487-3489
Author(s):  
V. V. Parchomchuk ◽  
D. V. Pestrikov ◽  
A. G. Ruggiero
Keyword(s):  
Electron Cooling ◽  
Cooling Rates

scholarly journals Steady state radiative cooling rates for low-density high-temperature plasmas

1977 ◽  
Author(s):  
D.E. Post ◽  
R.V. Jensen ◽  
C.B. Tarter ◽  
W.H. Grasberger ◽  
W.A. Lokke
Keyword(s):  
Steady State ◽  
High Temperature ◽  
Radiative Cooling ◽  
Low Density ◽  
Cooling Rates

scholarly journals New electron energy transfer and cooling rates by excitation of O2

1998 ◽  
Vol 16 (8) ◽  
pp. 1007-1013 ◽  
Author(s):  
A. V. Pavlov
Keyword(s):  
Energy Transfer ◽  
Electron Energy ◽  
Cross Sections ◽  
Vibrational Excitation ◽  
Electron Cooling ◽  
Vibrationally Excited ◽  
Cooling Rates ◽  
Production Frequency ◽  
Electron Energy Loss ◽  
Analytical Expressions

Abstract. In this work I present the results of a study of the electron cooling rate, the production rates of vibrationally excited O2, and the production frequency of the O2 vibrational quanta arising from the collisions of electrons with O2 molecules as functions of the electron temperature. The electron energy transfer and cooling rates by vibrational excitation of O2 have been calculated and fitted to analytical expressions by use of the revised vibrationally excited O2 cross sections. These new analytical expressions are available to the researcher for quick reference and accurate computer modeling with a minimum of calculations. It is also shown that the currently accepted rate of electron energy loss associated with rotational transitions in O2 must be decreased by a factor of 13.

Parametrization of Mean Radiative Properties of Optically Thin Steady-State Plasmas and Applications

2014 ◽  
Vol 16 (3) ◽  
pp. 612-631 ◽  
Author(s):  
R. Rodriguez ◽  
G. Espinosa ◽  
J. M. Gil ◽  
J. G. Rubiano ◽  
M. A. Mendoza ◽  
...  
Keyword(s):  
Steady State ◽  
High Energy ◽  
Radiative Properties ◽  
Laboratory Astrophysics ◽  
High Energy Density ◽  
Rate Equations ◽  
Huge Number ◽  
Radiative Power ◽  
Analytical Expressions

AbstractPlasma radiative properties play a pivotal role both in nuclear fusion and astrophysics. They are essential to analyze and explain experiments or observations and also in radiative-hydrodynamics simulations. Their computation requires the generation of large atomic databases and the calculation, by solving a set of rate equations, of a huge number of atomic level populations in wide ranges of plasma conditions. These facts make that, for example, radiative-hydrodynamics in-line simulations be almost infeasible. This has lead to develop analytical expressions based on the parametrization of radiative properties. However, most of them are accurate only for coronal or local thermodynamic equilibrium. In this work we present a code for the parametrization of plasma radiative properties of mono-component plasmas, in terms of plasma density and temperature, such as radiative power loss, the Planck and Rosseland mean opacities and the average ionization, which is valid for steady-state optically thin plasmas in wide ranges of plasma densities and temperatures. Furthermore, we also present some applications of this parametrization such as the analysis of the optical depth and radiative character of plasmas, the use to perform diagnostics of the electron temperature, the determination of mean radiative properties for multicomponent plasmas and the analysis of radiative cooling instabilities in some kind of experiments on high-energy density laboratory astrophysics. Finally, to ease the use of the code for the parametrization, this one has been integrated in a user interface and brief comments about it are presented.

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