Abstract:
The model of nonstationary non-equilibrium radiative plasma with accounting for level kinetics and radiative transport in spectral lines is constructed. The modeling of spherical target explosion and emmision as a result of laser pulse is carried out. Numerical calculation of two-temperature 1D Lagrangian equations of gasdynamics is realized. Radiation field and level kinetics are accounted self-consistently by using two different approaches: using interpolation between precalculated tables of spectral parameters and with account of detailed level kinetics included in-line into gasdynamic calculations. The efficiency of extreme ultraviolet source based on lithium and tin laser plasma is estimated. The results have a significant value for EUV-lithography, wich is used in microchip production. Obtained efficiency of EUV-source at optimal parameters of laser pulse is ∼1% for lithium and ∼5% for tin, that is close to experimental data.
Citation:
D. A. Kim, V. G. Novikov, G. V. Dolgoleva, K. N. Koshelev, A. D. Solomyannaya, “EUV-source modeling with account of detailed level kinetics included in-line into gasdynamic calculations”, Mat. Model., 25:7 (2013), 89–102; Math. Models Comput. Simul., 6:1 (2014), 46–55
This publication is cited in the following 3 articles:
A. D. Solomyannaya, I. Yu. Vichev, D. A. Kim, “The ion broadening calculating method for a nonequilibrium plasma”, Keldysh Institute preprints, 2017, 121–20
A. V. Shilkov, “Metod spektralnykh momentov v modelirovanii izluchayuschei stolknovitelnoi plazmy”, Preprinty IPM im. M. V. Keldysha, 2016, 036, 48 pp.
A. D. Solomyannaya, I. Yu. Vichev, “Comparison and analysis of the iron plasma spectra (based on the NLTE9 workshop)”, Keldysh Institute preprints, 2016, 123–27