Analysis of Internal Stress in a Tape Subsrate Made of the AISI 310S Stainless Steel for the Second-Generation HTS Wires Using Neutron Stress Diffractometry

Technical Physics - Neutron stress diffractometry is used to study internal (residual) stress in a tape made of the AISI 310S stainless steel with a thickness of 100 μm and a width of 4 mm in...     

Vibrations of hydrogen atoms in amorphous PrNi2H3.6

The atomic dynamics of hydration-amorphized PrNi₂H_3.6 are investigated by the incoherent inelastic scattering of neutrons, and the spectrum of vibrations of hydrogen atoms is reconstructed. It is shown that the spectral distribution of thermal excitations can be conceived as consisting of two bands, whose average energies coincide with the vibrational energies of the hydrogen atoms in the binary hydrides NiH and PrH_x. The final results agree with a previously proposed structural model of hydrogen amorphization. Fiz. Tverd. Tela (St. Petersburg) 40, 735–737 (April 1998)     

Saturated hydrides in the HfV2-D system

Saturated solid solutions of hydrogen (deuterium) are synthesized up to the ratio D/HfV₂ = 5.1 for the HfV₂ compound with a structure of the cubic Laves phase (the C15 type) and the HfV₂-based alloys (Hf_0.7Zr_0.3)V₂ and Hf(V_0.92Ti_0.08)₂ with partial substitution. The structure of the solid solutions is studied using neutron diffraction at room temperature. The saturated solid solutions of hydrogen are disordered: hydrogen occupies tetrahedral interstices 2Hf + 2V and 1Hf + 3V. The concentration of hydrogen in the solid solutions increases as the occupancy of the 1Hf + 3V interstices increases to the maximum value p _{1Hf + 3V} ～ 0.46, whereas the occupancy of the 2Hf + 2V interstices remains constant and equal to p _{2Hf + 2V} ～ 0.28. The maximum hydrogen concentration depends linearly on the lattice parameter of the initial intermetallic compound.     

Dyadic Nikol’skii-Besov spaces and their relationship to classical spaces

Properties of dyadic spaces are considered and a relationship between dyadic and classical spaces is described. A property of classical spaces is proved by using the technique of dyadic spaces.