270 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sofia University "St. Kliment Ohridski"BG16 papers
- Joint Institute for Nuclear ResearchRU8 papers
- Bulgarian Academy of SciencesBG7 papers
- A. Alikhanyan National LaboratoryAM5 papers
- Argonne National LaboratoryUS5 papers
- Bhabha Atomic Research CentreIN5 papers
- California State University Los AngelesUS5 papers
- Centre National de la Recherche ScientifiqueFR5 papers
- Christopher Newport UniversityUS5 papers
- Forschungszentrum JülichDE5 papers
- George Mason UniversityUS5 papers
- Hampton UniversityUS5 papers
31 papers
On the Influence of the Ionization-Recombination Processes on Hydrogen Plasma Polytropic Index
Todor M. Mishonov, Iglika M. Dimitrova, Albert M. Varonov
The polytropic (adiabatic) index for pure hydrogen plasma is analytically calculated as function of reciprocal temperature and degree of ionization. Additionally, the polytropic in…
Sound Absorption in Partially Ionized Hydrogen Plasma and Heating Mechanism of Solar Chromosphere
Todor M. Mishonov, Iglika M. Dimitrova, Albert M. Varonov
The temperature dependence of rates of electron impact ionization and two electrons recombination are calculated using Wannier cross section of electron impact ionization of neutra…
Master equation for operational amplifiers: stability of negative differential converters, crossover frequency and pass-bandwidth
T. M. Mishonov, V. I. Danchev, E. G. Petkov +5
The time dependent master equation from the seminal article by Ragazzini, Randall and Russell [J. R. Ragazzini, R. H. Randall and F. A. Russell, "Analysis of Problems in Dynamics b…
Callen-Welton fluctuation dissipation theorem and Nyquist theorem as a consequence of detailed balance principle applied to an oscillator
T. M. Mishonov, I. M. Dimitrova, A. M. Varonov
We re-derive the Nyquist theorem and Callen-Welton fluctuation-dissipation theorem (FDT) as a consequence of detailed balance principle applied to a harmonic oscillator. The usage…
Implicit Euler time discretization and FDM with Newton method in nonlinear heat transfer modeling
Stefan M Filipov, István Faragó
This paper considers one-dimensional heat transfer in a media with temperature-dependent thermal conductivity. To model the transient behavior of the system, we solve numerically t…
Simple do-it-yourself experimental set-up for electron charge measurement
T. M. Mishonov, E. G. Petkov, N. Zh. Mihailova +6
A simple experiment for the electron charge measurement is described. The experimental set-up contains standard electronic equipment only and can be built in every high-schoo…
Probability distribution function of crossover frequency of operational amplifiers
Todor M. Mishonov, Vladimir G. Marinov, Victor I. Danchev +7
For the first time the cumulative distribution function of the crossover frequency of a contemporary operational amplifier ADA4898-2 is experimentally studied. Using a USB Lock-In…
Measurement of the Boltzmann constant by Einstein. Problem of the 5-th Experimental Physics Olympiad. Sofia 9 December 2017
Todor M. Mishonov, Emil G. Petkov, Aleksander A. Stefanov +5
Several consecutive experiments with specifically built set-up are described. Performing of the consecutive experimental tasks enables possibility to determine Boltzmann's constant…
Polarization Transfer Observables in Elastic Electron Proton Scattering at 2.5, 5.2, 6.8, and 8.5 GeV
A. J. R. Puckett, E. J. Brash, M. K. Jones +104
The GEp-III and GEp-2 experiments were carried out in Jefferson Lab's (JLab's) Hall C from 2007-2008, to extend the knowledge of to the highest practically achieva…
Technical Supplement to "Polarization Transfer Observables in Elastic Electron-Proton Scattering at Q = 2.5, 5.2, 6.8, and 8.5 GeV"
A. J. R. Puckett, E. J. Brash, M. K. Jones +103
The GEp-III and GEp-2 experiments, carried out in Jefferson Lab's Hall C from 2007-2008, consisted of measurements of polarization transfer in elastic electron-proton scattering…
Determination of Boltzmann constant by equipartition theorem for capacitors
T. M. Mishonov, V. N. Gourev, I. M. Dimitrova +4
A new experimental set-up for Boltzmann constant measurement is described. Statistically averaged square of voltage is measured for different capacitances . B…
Measurement of the electron charge using Schottky noise. Problem of the 6-th Experimental Physics Olympiad. Sofia 8 December 2018
Todor M. Mishonov, Emil G. Petkov, Aleksander A. Stefanov +14
Several consecutive experiments are described with a printed circuit board PCB set-up, especially designed for these experiments. Doing the consecutive experimental tasks opens up…
b-Spline Curves and Surfaces as a Minimization of Quadratic Operators
Svetoslav I. Nenov
The goal of this short note is to prove that every b-spline curve or surface (generated by uniform knots, without multiplicity) may be defined as minimum of positive quadratic oper…
Meeting an absolute test information target with optimal number of test items via Grand Canonical Monte Carlo simulation
Stefan M. F|ilipov, Ivan D. Gospodinov
This work studies IRT-based Automated Test Assembly (ATA) of multiple test forms (tests) that meet an absolute target information function, i.e. selecting from an item bank only th…
Polarization components in photoproduction at photon energies up to 5.6 GeV
W. Luo, E. J. Brash, R. Gilman +107
We present new data for the polarization observables of the final state proton in the reaction. These data can be used to test predictions based on hadr…
Practical Data Correlation of Flashpoints of Binary Mixtures by a Reciprocal Function: The Concept and Numerical Examples
Mariana Hristova, Dimitar Damgaliev, Jordan Hristov
Simple data correlation of flashpoint data of binary mixture has been developed on a basic of rational reciprocal function. The new approximation requires has only two coefficients…
Integral-Balance Solution to the Stokes' First Problem of a Viscoelastic Generalized Second Grade Fluid
Jordan Hristov
Integral balance solution employing entire domain approximation and the penetration dept concept to the Stokes' first problem of a viscoelastic generalized second grade fluid has b…
Approximate Solutions to Fractional Subdiffusion Equations: The heat-balance integral method
Jordan Hristov
The work presents integral solutions of the fractional subdiffusion equation by an integral method, as an alternative approach to the solutions employing hypergeometric functions.…
An Inverse Stefan Problem Relevant to Boilover: Heat Balance Integral Solutions and Analysis
Jordan Hristov
Stefan problems relevant to burning oil-water systems are formulated. Two moving boundary sub-problems are defined: burning liquid surface and formation of a distillation ("hot zon…
Search for effects beyond the Born approximation in polarization transfer observables in elastic scattering
M. Meziane, E. J. Brash, R. Gilman +108
Intensive theoretical and experimental efforts over the past decade have aimed at explaining the discrepancy between data for the proton electric to magnetic form factor ratio, $G_…
Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to Q^2 = 8.5 GeV^2
A. J. R. Puckett, E. J. Brash, M. K. Jones +103
Among the most fundamental observables of nucleon structure, electromagnetic form factors are a crucial benchmark for modern calculations describing the strong interaction dynamics…
Search for -mesic nuclei in recoil-free transfer reaction
GEM Collaboration, A. Budzanowski
We have studied the reaction at recoil-free kinematics. An meson possibly produced in this reaction would be thus almost at rest in the labora…
Cross Section and Tensor Analysing Power of the Reaction Near Threshold
The GEM Collaboration, A. Budzanowski, A. Chatterjee +29
The angular distributions of the unpolarised differential cross section and tensor analysing power of the reaction have been measured at an excess energy o…
On the anatomy of multi-spin magnon and single spike string solutions
H. Dimov, R. C. Rashkov
We study rigid string solutions rotating in background. For particular values of the parameters of the solutions we find multispin solutions corresponding to gian…