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Original Article Pages 48-52
Abstract: The spectrum-averaged neutron fluence-to-ambient dose conversion coefficient for 252Cf, 252Cf/D2O, 241AmB, 241AmBe and 239PuBe neutron sources were calculated using the neutron fluence-to-dose conversion coefficients for the personal dose and the ambient dose which are the new dosimetric quantities, defined in the ICRP/ICRU joint report. One of the goals of defining these new dosimetric quantities is to harmonize the operational quantities with the protection quantities. By using Monte Carlo methods the spectra of the neutron sources and the total fluences were estimated, with the spectra and the neutron fluence-to- dose conversion coefficients the ambient and the personal dose were estimated.
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Original Article Pages 79-97
Abstract: Numerous experimental data on the heat capacity of solid phases make it possible to carry out a generalized thermodynamic analysis of diamond-like isostructural phases of the fourth group elements and their structural analogs of A III B V and A II B VI fluorite phases. The IV-th group of pure elements, in addition to diamond, silicon, germanium and alpha-tin, includes diamond-like lead.
Original Article Pages 74-78
Abstract: We report here cross sections for excitations of 1S-2 1 S, and 1S-nP states ( n = 2,3,4,5,6) of hydrogen atom by positron impact using the scaled Born positron (SBP) method [J.L.S.Lino, Inter. J. At. Nucl. Phys.7 028 (2023)]. Particular attention is paid to the positronium formation channel which for the first time, integral cross sections are investigated using the SBP method. The present results for excitation to the higher levels are believed to the only data available (using SBP method) and illustrate the good convergence characteristics of the procedure.
Original Article Pages 63-73
Abstract: N=4 superconformal n-particle quantum mechanics on the real line is governed by two prepotentials, U and F , which obey a system of partial nonlinear differential equations generalizing the Witten-Dijkgraaf-Verlinde-Verlinde (WDVV) equation for F .
Original Article Pages 60-62
Abstract: A hydrogen atomic model of one-unit diameter enclosing reduced diameter orbits was suggested. Investigations of the hydrogen line and minimum quanta of Max Planck were carried. A formula relating the proposed model and Bohr model was derived. A corresponding diameter correlating the lower and upper energy states was determined and used to compute the spectral lines of hydrogen spectrum series. All the series are found to be confined between orbit 1 and orbit 12 of the proposed model.
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