The logic of tests and a minimal set of gasdynamic devices for a research of strength of flight vehicle constructions taking into account the mechanical action of radiations are considered. It is offered to carry out tests in two steps. The wave processes and destructions caused by action of pulse loadings are investigated on the first step. Researchers are admissible to be done on fragments of construction. The finishing tests of all construction in flight conditions and at action of the dynamic loadings are carried out on the second step. This step corresponds to a deformation stage as a shell.The contact sector charge and contact charge detonating from irradiation are applied for modeling of pulse loadings. Dynamic loadings are generated by means of the charges which are volume distributed or located on an equidistant surface. It is convenient to use a multibarrelled shock pipe of explosive action for strength tests to the set of dynamic loadings. This gasdynamic device allows to realize the resonant regimes of loadings.Results of tests are briefly described. It is shown that now an efficient set of devices for modeling of mechanical action of radiations on flight vehicles together with flight conditions is available.

The results of experimental testing of shock wave generators, based on irregular Mach reflection of shock waves in a conical geometry, along with the results of numerical simulation is presented. The shock in a layered cylindrical central body was produced by an impact of a converging conical flyer plate. Conical flyer plate was originating from initially cylindrical cavity liner in a cylindrical HE charge that was launched by a sliding detonation. This approach led to device simplification, since manufacturing of conical parts from metal and explosive is not required. The sequential detonation of HE charge by a multi- point distributor was employed to vary the geometry of formed conical flyer. The dependence of parameters of shock wave in cylindrical Polymethylmethacrylate (PMMA) core on launch angle was investigated. It was found that launch angles below 10° lead to failure of the Mach reflection mode, while larger angles produced flat Mach disks that can be utilized in various shock experiments.

At the GSI Helmholtzzentrum fur Schwerionenforschung GmbH (Darmstadt, Germany) intense focused beams of energetic heavy ions are used to generate high-energy-density states in matter [1]. In recent experiments, initially solid tantalum and tungsten samples (50-90 mu m thick foils) were uniformly heated in a quasi-isobaric way by a microsecond ion-beam pulses. The temperature of a sample has been observed by a fast multi-channel optical pyrometer during and after the heating. The isobaric heat capacity of the melted metals as well as the enthalpy of fusion have been obtained from the temperature - enthalpy dependence, calculated from measured temperature-time data. A good measurement statistics has been achieved by carrying out a large number of the same experiments with identical targets. The obtained experimental results for liquid tantalum and tungsten heated up to 5000 K are presented and discussed.

In order to compare the results of HEDP/WDM experiments with simulations, it is important to know beam parameters at the target. As high level of energy deposition would destroy any material1 in a single shot, nonintercepting methods have to be used for beam diagnostics. The longitudinal paramters – total number of particles and beam intensity profile – are recorded in every short with current transformers. At HHT, measurement of transverse beam profile at the focal plane is usually done by recording beam induced fluorescence of argon gas with two perpendicular, fast gated and intensified CCD-cameras. Due to hydrodynamic expansion of the heated gas during the irradiation, the observed beam profile may be blurred out. As an alternative non-intercepting beam diagnostic method, a capacitive pickup probe has been developed and successfully tested at the HHT experimental area. The probe has four equal knob capacitor plates in a cylindrical geometry, as shown in Figure 1. With this probe, the position of the beam position and its transverse aspect ratio at the focal plane can be precisely determined by calculating the dipole and quadrupole moments of the charge distribution induced by the ion beam on the probe plates. The signal difference from two opposite plates is proportional to the beam displacement ∆x (Eq. (1)), whereas the so-called ”quadrupole moment”2 q is given by Eq.(2):

The conductivity of cooled gaseous hydrogen with initial density 0,022g/cc was measured inside the single-crystal sapphire cell. The transition of hydrogen to a high electroconducting state during the fourth circulation of the shock wave (40–50 GPa) was registered. It has been concluded that the behaviour of brittle substances, (e.g. sapphire) used as isolators, should be taken into account to interpret the dielectric-metal transition in low initial density substances.