Film protection in the radiographic experiments studying the liner compressed by magnetic field from disk EMG with HE mass of /spl sim/100 kg

Summary form only given. One of the most effective ways to get the high energy densities state of a substance (pressure and temperature) is a fast compression of cylindrical Al-liners by an ultra-high magnetic field, used for compression of the materials being studied. VNIIEF has developed a disk explosive magnetic generator (DEMG) with a fast electrical way of energy delivery to the load with an imploding liner, that permits to shape in this load the pulses of current with the amplitude from 30 to 35 MA and with a regulated rise time from 1.5 to 4 microsec. The axial and radial radiography of the compressed liner is the most informative technique, studying the dynamic characteristics of the liner (velocity, symmetry, instabilities amplitude, etc). The difficulty in using the radiography in the DEMG experiments is connected with a big amount (/spl sim/100 kg) of HE in the generator and with, a high magnetic field in a transmission line from DEMG to the load. This magnetic field accelerates the fragments of a reverse conductor above the liner up to high velocities. The protection system is described, that permits to protect the X-ray film cassettes both from the shock waves effect and from the transmission line conductors fragments. The film protection is ensured by means of fast-operation explosive shutters, the elements of passive protection, and also it is ensured by the use of a capsule of a special shape with the X-ray film placed inside of it. This allows providing a free flight of the capsule out of the explosion zone without any damage to the film.