On the Applications of a New Technique to Solve Linear Differential Equations, with and without Source

A general method for solving linear differential equations of arbitrary order, is used to arrive at new representations for the solutions of the known differential equations, both without and with a source term. A new quasi-solvable potential has also been constructed taking recourse to the above method.Comment: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA

Dvostruka ionizacija bakra udarom elektrona

Electron-impact double ionization of copper has been investigated in the modified double-binary-encounter model. For the first time, Hartree-Fock velocity distribution has been used while considering ejection of both electrons from the target in binary-encounter calculations. Contribution of Auger emission, which is considered to be dominant at high impact energies, is also included in the calculations. The present results have been compared with the recent experimental measurement of Bolorizadeh et al. and semi-empirical calculations of Belenger et al. The semi-empirical calculations are found to overestimate the cross-sections. The present results are in satisfactory agreement with the experimental observations.Istražili smo dvostruku ionizaciju bakra udarom elektrona u izmijenjenom modelu dvojnih binarnih sudara. Prvi se puta u razmatranjima izbacivanja dvaju elektrona iz mete u binarnim sudarima primjenjuje Hartree-Fockova raspodjela brzina. Doprinos Augerove emisije, koji dominira na višim udarnim energijama, također smo uključili u račun. Dobiveni se ishodi računa uspoređuju s nedavnim mjerenjima Bolorizadeha i sur. i poluempirijskim računima Belengera i sur. Nalazimo da poluempirijski računi precjenjuju udarne presjeke. Naši su ishodi računa u dobrom skladu s eksperimentalnim vrijednostima

Dvostruka ionizacija bakra udarom elektrona

Electron-impact double ionization of copper has been investigated in the modified double-binary-encounter model. For the first time, Hartree-Fock velocity distribution has been used while considering ejection of both electrons from the target in binary-encounter calculations. Contribution of Auger emission, which is considered to be dominant at high impact energies, is also included in the calculations. The present results have been compared with the recent experimental measurement of Bolorizadeh et al. and semi-empirical calculations of Belenger et al. The semi-empirical calculations are found to overestimate the cross-sections. The present results are in satisfactory agreement with the experimental observations.Istražili smo dvostruku ionizaciju bakra udarom elektrona u izmijenjenom modelu dvojnih binarnih sudara. Prvi se puta u razmatranjima izbacivanja dvaju elektrona iz mete u binarnim sudarima primjenjuje Hartree-Fockova raspodjela brzina. Doprinos Augerove emisije, koji dominira na višim udarnim energijama, također smo uključili u račun. Dobiveni se ishodi računa uspoređuju s nedavnim mjerenjima Bolorizadeha i sur. i poluempirijskim računima Belengera i sur. Nalazimo da poluempirijski računi precjenjuju udarne presjeke. Naši su ishodi računa u dobrom skladu s eksperimentalnim vrijednostima

Constraints on nuclear matter parameters of an Effective Chiral Model

Within an effective non-linear chiral model, we evaluate nuclear matter parameters exploiting the uncertainties in the nuclear saturation properties. The model is sternly constrained with minimal free parameters, which display the interlink between nuclear incompressibility ($K$), the nucleon effective mass ($m^{\star}$), the pion decay constant ($f_{\pi}$) and the $\sigma-$meson mass ($m_{\sigma}$). The best fit among the various parameter set is then extracted and employed to study the resulting Equation of state (EOS). Further, we also discuss the consequences of imposing constraints on nuclear EOS from Heavy-Ion collision and other phenomenological model predictions.Comment: 10 pages, 8 figure

Influence of Methyl, Ethyl, Propyl & n-Butyl Alcohols on the Stability of Oil-Water Emulsions

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Uzbuda vodika s metastabilnog 2s–stanja udarom elektrona

Excitation of hydrogen atom from its metastable 2s-state to ns (n = 3,4,5,6) and np (n = 3) states by electron impact has been investigated by employing a distorted-wave method, in the framework of the two-potential formulation. Contribution of exchange has been included by antisymmetrising the total wave function of the system. The differential cross-sections are reported at intermediate energies. Theoretical findings for 2s-5s and 2s-6s transitions have not been reported earlier.Istražuje se uzbuda vodikovog atoma iz 2s–stanja u ns (n = 3, 4, 5, 6) i np (n = 3) stanje upotrebom distordiranih valova i na osnovi dvopotencijalne funkcije. Daju se diferencijalni udarni presjeci za srednje energije elektrona