Absorption and scattering of resonance laser radiation in ultracold optical dense plasma

Abstract

The problem of absorption and scattering of resonance laser radiation in ultracold optical dense plasma has been studied numerically. The frequency asymmetry of scattering and nonlinear absorption of light is predicted.

Scattering of resonant radiation in an expanding sphere

“…The second reason is due to the fact that in the area from the sphere center up to the shadow border the scattered "forward" radiation is more strongly absorbed in the "blue" spectral wing because of the Doppler escape. This effect has been mentioned for the first time for a slab in article [11] and in article [8] for a sphere. As a whole, the scattered "forward" radiation is shifted by frequency to the "red" spectral wing.…”

“…Its solution for the atomic populations of levels in the set of spatial mesh points was performed under the circuit of implicit linear multistep methods with the use of the Adams and Gere algorithm [2,8], which realizes the variable order and a step of integration. The constructed numerical algorithm enabled calculation of the population kinetics of the two level atom, the frequency-and-angular characteristics of the radiation scattered by the artificial sodium cloud for a set of spatial nodes at any given point in time.…”

“…We have the problem (1)- (8), which represents the system of integrodifferential equations. It is determined by the fact that there is the coefficient t) J(r, on the right -hand side of the rate balance equations (2), (3).…”

Influence of the Doppler effect on radiative transfer in a spherical plasma under macroscopic motion of substance

“…at times including a sufficiently large number of pulsation phases of the spherical plasma, or at linear ion velocities 0 V reaching ten of thermal velocities. The results of modeling of absorption of broadband and laser radiation at expansion of gas and plasma are presented in articles [9][10][11][12][13][14]. Next, we present results that take into account both the radial pulsation and the rotation of the spherical plasma.…”

Resonance scattering of solar radiation by a freely expandind atomic cloud

“…Ïîçaeå áûëè âûïîëíåíû ýêñïåðèìåíòû [12] ñ öåëüþ ïîëó÷åíèÿ óëüòðàõîëîäíîé ïëàçìû (ÓÏ) è èññëåäîâàíèÿ åå ïàðàìåòðîâ. ×èñëåííîå ìîäåëèðîâàíèå ñïåêòðàëüíûõ õàðàêòåðèñòèê ÓÏ áûëî ïðîâåäåíî â ðàáîòàõ [13][14][15]. ____________ * Íèêîëàé Èâàíîâè÷ Êîñàðåâ (kosarev_nikolai@mail.ru).…”