Axial Compression of Hollow and Nonhollow Cylindrical Billet

Russian Engineering Research - Methods of producing hollow and nonhollow cylindrical billet by shaping heterogeneous and ceramic materials under axial pressure, with and without a mandrel, are...     

Measurement of slowing down of neutrons by water in the energy interval from 1.46 to 0.025 ev

With the aid of an indium detector the spatial distribution of resonance (E_r = 1.46 ev) and thermal neutrons that arise as a result of the slowing down in water of the photoneutrons emitted by an Sb + Be source is measured. The age of the neutrons _{1.46 ev}, the thermal neutron diffusion length in water, and the square of the slowing-down length from neutron energies of 1.46 ev to thermal energies (0.025 ev) are determined.In conclusion the authors express their sincere appreciation to Professor I. I. Gurevich for valuable discussions of the results of the work to A. P. Venediktov and B. V. Sokolov, who took part in the preparation of the apparatus and in the measurements, and to A. V. Teinov, who helped in preparing the apparatus.