Reaction of metal-target vaporization to energy-flux modulation

An investigation is carried out on the influence of deep harmonic and pulsed modulation of a concentrated energy flux on the response of the surface temperature and pressure of delivery for intense surface vaporization of metals. For the case of harmonic modulation, it is shown that for a modulation depth of 0.1, the results of calculations using a nonlinear model agree sufficiently well with previous calculations using a linearized model. The resonant dependence of the response of the surface temperature and vaporizational pulse of the delivery on the modulation frequency is fully retained here. Attention is also given to the dependence of the frequency characteristics of the response on the modulation depth. The resonant effect is shown to be retained for the pressure of delivery over the whole range of modulation depths; for the surface temperature, it vanishes given sufficiently deep modulation.