No abstract available

[en] A description is given of a device for: a) neutron scattering studies of condensed matter, in a wide temperature range and in an extremal magnetic field; b) neutron diffraction experiments with polycrystal and monocrystal samples, and with samples of spin glasses; c) determination of the magnetic structure of materials; d) studying the evolution of atom magnetic moments ordering and establishing magnetic phase transmissions. It incorporates a dismountable cryostat with a bearing flange, an insulation space and a container with a secondary refrigerant; a regulator of the sample temperature; a regulator of the refrigerant flow; a holder with the sample being measured and a regulated electric heater. Characteristic of the device is a heat-exchange chamber mounted at the bottom of the comtainer, with walls made of a low-conductivity material. The metal bottom of the chamber is profiled, with a butt on which the regulated electric heater is cooled. The insulation space of the heat-exchange chamber and the sample, defined by the coating, is vacuum separated from the insulation space of the cryostat and is connected to a vacuum pump. The coating is fixed to the bearing flange of the cryostat by means of a connecting unit. The flange is fixed to a mechanism for spatial orientation

[en] The processes of high-energy ions etching in polyimide (PI) were studied. Comparison between characteristics of etchant with various compositions was made. A new etchant (concentrated hydrogen peroxide) with high selectivity and high etching rate was suggested. The etchant is accessible and ecologically clean. PI track membranes for ultra- and micro-filtration were created. (author). 12 refs, 1 fig., 2 tabs