52-Teslas, long-life coil for plasma research

A single turn coil was built, which permit to obtain repeatedly a magnetic field of induction T, with no noticeable damages to the inner surface. It was possible thanks to the fact that the authors had previously worked out the method of change of radial distribution of conductor temperature. The coil body is of beryllium bronze, and its central hole is explosively cladded with a layer of the St 55 steel 0,6 mm thick. This coil has the three radial holes, which enable to introduce a laser beam and a target as well as to make ion measurements. Its useful diameter amounts to 5 mm. By means of the presented coil there were made many experiments with laser plasma in an external magnetic field, and some 70 times at the amplitude T.