RESEARCH FROM H.B. NERSISYAN AND CO-RESEARCHERS PROVIDES NEW DATA ON PLASMA PHYSICS

Physics Week
May 11, 2010

PLASMA PHYSICS

According to recent research from Armenia, "The spectral line
shapes for hydrogen like heavy ion emitters embedded in strongly
correlated two component electron ion plasmas are investigated with
numerical simulations. For that purpose the microfield fluctuations
are calculated by molecular dynamics simulations where short range
quantum effects are taken into account by using a regularized Coulomb
potential for the electron ion interaction."

"The microfield fluctuations are used as input in a numerical
solution of the time dependent Schrodinger equation for the radiating
electron. In distinction to the standard impact and quasistatic
approximations the method presented here allows to account for the
correlations between plasma ions and electrons. The shapes of the
Ly alpha-line in Al are investigated in the intermediate regime,"
wrote H.B. Nersisyan and colleagues.

The researchers concluded: "The calculations are in good agreement
with experiments on the Ly alpha-line in laser generated plasmas."

Nersisyan and colleagues published their study in Contributions to
Plasma Physics (Microfield Fluctuations and Spectral Line Shapes
in Strongly Coupled Two Component Plasmas. Contributions to Plasma
Physics, 2010;50(2):193-203).

For additional information, contact H.B. Nersisyan, Institute
Radiophys & Electrical, Division Theoret Physics, Alikhanian Bros
St. 1, Ashtarak 378410, Armenia.

Publisher contact information for the journal Contributions to Plasma
Physics is: Wiley-V C H Verlag GmbH, PO Box 10 11 61, D-69451 Weinheim,
Germany.