Modeling of XeCl-laser excitation systems on storage capacitors
With the purpose of reception of energy of generation 0,2-1 J, two types of electrodischarge XeCl-laser excitation system with was created. The modeling procedure of XeCl-laser excitation systems is developed, allowing to calculate the form of a voltage pulse on laser electrodes and energy input in the active medium. The dependence of discharge gap resistance on time is usually simulated by exponential empirical dependence. In this case the breakdown voltage of inter-electrode gap must be taken from experimental data also. For each gas mixture, parameters of time dependence of discharge gap resistance and value of inter-electrode breakdown voltage have different values. Consequently, the results, which are obtained in this manner, have practical significance for definite gas ratio of mixture, We have developed the simple model, which takes into account the dependence of discharge gap parameters from gas pressure and composition. The solution of Boltzmann equation for electrons in electrical field (E/N) and calculation of kinetic processes may be carried out. In this case the effective rate of electrons formation may be approximated as function of gas composition and (E/N). Results of one model are compared to results of other model and experimental data
Simulation of systems of XeCl-laser excitation of different types
The design procedure of systems of XeCl-laser excitation is developed as for the LC-contour and the LC-inverter, allowing to expect the form of a pulse of a voltage on laser electrodes and energy input in the active medium depending on parameters of a circuit of excitation.
Dissociative attachment from vibrationally and rotationally excited HCl and HF
An electron impact mass spectrometer is used to study dissociative attachment in HCl, DCl, and HF at incident energies 0–4 eV. Target molecules in different excited nuclear states are prepared with an iridium oven source. The cross sections for Cl−/HCl, Cl−/DCl, and F−/HF all show an order of magnitude increase with each increase of vibrational quantum (v=0, 1, and 2). In Cl−/HCl the threshold cross section for the v=2 level at 0.1 eV reaches (7.8±4.7)×10−15 cm2. Together, this large cross section and the recent potential‐energy‐curve calculations of HCl and HCl− show that the conventional theory of dissociative attachment may not be applicable here. A new mechanism for dissociative attachment is suggested.