We report a new version of fermion coupled coherent states method (FCCS-II) to simulate two-electron systems based on a self-symmetrized six-dimensional (6D) coherent states grid. Unlike the older fermion coupled coherent states method (FCCS-I), FCCS-II does not need any new equations in comparison with the coupled coherent states method. FCCS-II uses a simpler and more efficient approach for symmetrizing the spatial wave function in the simulation of fermionic systems. This method, has significantly increased the speed of computations and give us the capability to simulate the quantum systems with the larger CS grids. We apply FCCS-II to simulate the Helium atom and the Hydrogen molecule based on grids with a large numbers of coherent states. FCCS-II with a relatively low number of CS gives a potential energy curve for H2 that is very close to the exact potential curve. Moreover, we have re-derived all the important equations of the FCCS-I method.

In this paper, we have presented the experimental and modeling results of the effect of voltage parameters on the characteristics of the low-pressure Ar dielectric barrier discharge. The frequency and amplitude range was set at 5–19 kHz and 255–370 V, respectively. Our investigations showed that the voltage parameters such as amplitude and frequency have large impact on the discharge behavior. Increase in applied voltage amplitude leads to an increase in discharge current. It is also shown that with increasing applied voltage amplitude, the plasma radiations are increased and move to the middle of discharge gap. Also, it causes that surface charge density is increased and discharge is distributed on the dielectric surface. With increasing voltage frequency, discharge current and plasma radiations are increased, but discharge is not distributed on the dielectrics surface. It is also shown that with increasing voltage frequency and amplitude, the discharge kinetic is changed.

The results of an experimental investigation of neutron emission characteristics in the Filippov-type plasma focus facility "Dena" (90 kJ, 25 kV, 288 µF) with D2 + %1 Kr as working gas are presented. From the experimental results, one can conclude that both thermonuclear and nonthermonuclear mechanisms are always present in neutron production, but their contributions to the total neutron yield are strongly dependent on the initial pressure and discharge voltage. It has been found that at constant discharge voltages and low pressures the beam-target interaction mechanism plays an important role in the neutron production and with increasing the pressure, its role decreases and the importance of thermonuclear mechanism increases. Also at constant pressures, the contribution of beam-target interaction mechanism in neutron production decreases with increasing the discharge energy. The value of the α index in the empirical neutron yield scaling law Yn ∝ I α ∝ E α/2 was found to be about 3.82.

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