In the present paper a general model of plasma instabilities in high-power e-beam sustained CO2 laser amplifiers is illustrated. This model improves the Nighan-Hass one by allowing explicitly for the various degrees of vibrational freedom, and by taking into account the stabilizing effect of the laser field intensity. Two numerical codes, which have been used to calculate the steady-state plasma properties needed to carry out the stability analysis, are also presented. The model has been used to test the degree of thermal and ionic instability of an EDCL device using four-component gas mixtures (CO2-N2-He-CO).
Plasma instability in high-power CO2 laser amplifiers / Bruzzese, Riccardo; Solimeno, Salvatore; G. L., Braglia; S., Martellucci; J., Quartieri. - In: JOURNAL DE PHYSIQUE IV. - ISSN 1155-4339. - STAMPA. - 11:41(1980), pp. C9-363-C9-369.
Plasma instability in high-power CO2 laser amplifiers
BRUZZESE, RICCARDO;SOLIMENO, SALVATORE;
1980
Abstract
In the present paper a general model of plasma instabilities in high-power e-beam sustained CO2 laser amplifiers is illustrated. This model improves the Nighan-Hass one by allowing explicitly for the various degrees of vibrational freedom, and by taking into account the stabilizing effect of the laser field intensity. Two numerical codes, which have been used to calculate the steady-state plasma properties needed to carry out the stability analysis, are also presented. The model has been used to test the degree of thermal and ionic instability of an EDCL device using four-component gas mixtures (CO2-N2-He-CO).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
