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Academic Journal

Analytical electric potentials for simulation of the multipole radiofrequency ion funnels with nonlinear profiles

Subjects: laplace equation; periodic electrodes; analytical electric field

  • Source: St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 17, Iss 2 (2024)

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Academic Journal

The testing of some extra accuracy schemes on the problem of the shock wave – vortex interaction

Subjects: shock wave interaction; isoentropic vortex; numerical simulation

  • Source: St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 17, Iss 2 (2024)

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Academic Journal

Derivation of the Klein – Gordon – Fock equation from first principles

Subjects: klein – gordon – fock equation; schrödinger equation; sturm – liouville problem

  • Source: St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 17, Iss 2 (2024)

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Academic Journal

The formation of single-domain gallium phosphide buffer layers on a silicon substrate without the use of migration enhanced epitaxy technique

Subjects: heterostructure; molecular beam epitaxy; buffer layer

  • Source: St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 17, Iss 2 (2024)

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Academic Journal

Transformation of the structure of thin metal films upon activation of their ability to low-voltage electron emission

Subjects: thin films; low-field electron emission; film dewetting

  • Source: St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 17, Iss 2 (2024)

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Academic Journal

Formulation of the Lorentz transformation equations in the three dimensions of space

Subjects: frame of reference; lorentz transformation; space contraction

  • Source: St. Petersburg Polytechnical University Journal: Physics and Mathematics, Vol 17, Iss 2 (2024)

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Academic Journal

Researching the phase portrait for a differential equations system modelling competitive interaction

Subjects: ordinary differential equations; аutonomous 3 -dimensional system; dynamic modelling of competition

  • Source: Известия высших учебных заведений. Поволжский регион: Физико-математические науки, Iss 1 (2024)

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Academic Journal

Studying the nonlinear mathematical model of the mechanical system 'pipeline – pressure sensor'

Subjects: pressure sensor; pipeline; sensitive element

  • Source: Известия высших учебных заведений. Поволжский регион: Физико-математические науки, Iss 1 (2024)

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Academic Journal

On infinitesimal transformations of Weil bundles as solutions of differential equation for Lie derivative of complete lift connection

Subjects: alternative representation; infinitesimal affine transformation; weil bundle

  • Source: Известия высших учебных заведений. Поволжский регион: Физико-математические науки, Iss 1 (2024)

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Academic Journal

On nonlocal bifurcations in two-parameter families of vector fields on the plane with involutive symmetry

Subjects: planar vector field; dynamical system; saddle

  • Source: Известия высших учебных заведений. Поволжский регион: Физико-математические науки, Iss 1 (2024)

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