The influence of the acetate group in the polyvinyl alcohol structure on the direct blackening photostimulated processes in the polymer–zinc oxide–salt of metal photosensitive composition

In this presented paper, we will investigate the photographic characteristics of photosensitive compositions which consist of a polymer, zinc oxide and salt of metal using the examples of PVA–ZnO–BiCl₃ and PVA–ZnO–Pb(CH₃COO)₂ compositions. An experimental result of the dependence between the photographic characteristics of a similar system and the content of the acetate groups in the polymer structure, and its explanation are presented here.     

The features of electron dose distributions in circular objects: Comparison of Monte Carlo calculation predictions with dosimetry

The features of electron dose field formation in the multi-layer circular objects are related with its surface irregularity such as convexity, concavity and roundness of inner and outer layers. The simulation of dose distributions in multi-layer tubes irradiated with a scanned electron beam (EB) was carried out by Monte Carlo (MC) method with utilization of the software ModeCEB. The effects of mutual influence on dose field formation in contacting multi-layers tubes irradiated with EB were MC simulated and measured with a film dosimetry. An experimental validation of the obtained simulation predictions for dose distributions in multi-layer tubes irradiated with 10 MeV electrons was performed on radiation facility with linear electron accelerator LAE 13/9, INCT, Warsaw. Comparison of MC simulation results with a film dosimetry is discussed in the report.     

IR spectra of certain methyl -d-glucopyranoside nitrates

Conclusions A study has been made of the IR spectra of methyl--D-glucopyranoside 2-and 3-nitrates, methyl--D-glucopyranoside 6-nitrate, and methyl-4-O-methyl--D-glucopyranoside 2,3-and 3,6-dinitrates and 2,3,6-trinitrate.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1763–1765, August, 1987.     

A study of 192Ir production conditions at an electron accelerator

This communication deals with the conditions of ¹⁹²Ir isotope production under a nonreactor technology via the ¹⁹³Ir(γ, n)¹⁹²Ir reaction. It can be carried out by irradiation of a target from natural iridium with the high-energy X-ray of an electron accelerator. The possibility of increasing the photonuclear yield of the target isotope by addition of the ¹⁹¹Ir(n, γ)¹⁹²Ir reaction induced by moderated photoneutrons has been shown. For this, an X-ray converter and a target were placed inside a neutron moderator. Data on the ¹⁹²Ir and admixture yields for the techniques using the moderator and without it have been obtained by computer simulation and experimentally.     

Determination of diffusion and activity coefficients in the gallium-indium system by the contact-melting method

The concentration profile in the liquid layer and the rate of contact melting are derived. These characteristics are found as functions of the self-diffusion coefficients D_A and D_B of the components and of the activity coefficients in the regular-solution approximation. Comparison of these equations with the experimental concentration profile and with the experimental contact-melting rate allows calculation of D_A, D_B, and the factork in the expression for Inf in the Ga-In system.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 53–57, April, 1971.     

Calculation of the erosion profile of a cathode for magnetron ion-sputtering systems

A method is proposed for calculating the cathode erosion profile in planar magnetron ion-sputtering systems. The method uses integral characteristics of the magnetic and electric fields and does not require detailed information on the spatial characteristics of the discharge plasma. The calculated results are compared with experimental cathode profiles for rectangular and circular planar ion-sputtering systems.