A review of the matrix-exponential formalism in radiative transfer

DS Efremenko, VM García, SG García… - Journal of Quantitative …, 2017 - Elsevier
This paper outlines the matrix exponential description of radiative transfer. The
eigendecomposition method which serves as a basis for computing the matrix exponential …

Analytical and numerical methods for computing electron partial intensities in the case of multilayer systems

VP Afanas'ev, DS Efremenko, PS Kaplya - Journal of Electron Spectroscopy …, 2016 - Elsevier
We present two novel methods for computing energy spectra and angular distributions of
electrons emitted from multi-layer solids. They are based on the Ambartsumian …

Volcanic SO2 plume height retrieval from UV sensors using a full-physics inverse learning machine algorithm

DS Efremenko, DG Loyola R, P Hedelt… - International Journal of …, 2017 - Taylor & Francis
Precise knowledge of the location and height of the volcanic sulphur dioxide (SO2) plume is
essential for accurate determination of SO2 emitted by volcanic eruptions. Current SO2 …

Differential inverse inelastic mean free path and differential surface excitation probability retrieval from electron energy loss spectra

VP Afanas' ev, AS Gryazev, DS Efremenko, PS Kaplya - Vacuum, 2017 - Elsevier
Quantitative interpretation of the electron spectroscopy data requires the information on
differential inverse inelastic mean free paths (DIIMFP) and differential surface excitation …

Photoelectron spectra of finite-thickness layers

VP Afanas' ev, OY Golovina, AS Gryazev… - Journal of Vacuum …, 2015 - pubs.aip.org
A method of computing x-ray photoemission spectra in the wide range of energy losses and
different sighting angles is presented. Photoemission spectra for layers of finite thickness are …

Comparative analysis of radiative transfer approaches for calculation of plane transmittance and diffuse attenuation coefficient of plane-parallel light scattering layers

LG Sokoletsky, VP Budak, F Shen, AA Kokhanovsky - Applied Optics, 2014 - opg.optica.org
We present an analysis of a number of different approximations for the plane transmittance
T_p and diffuse attenuation coefficient K_d of a semi-infinite, unbounded, plane-parallel …

Determination of atomic hydrogen in hydrocarbons by means of the reflected electron energy loss spectroscopy and the X-ray photoelectron spectroscopy

VP Afanas' Ev, AS Gryazev… - Journal of Physics …, 2016 - iopscience.iop.org
Elastic peaks electron spectroscopy (EPES) is a perspective tool for measuring the
hydrogen atomic density in hydrocarbons. It is known that hydrogen elastic peaks overlap …

Cluster Low-Streams Regression Method for Hyperspectral Radiative Transfer Computations: Cases of O2 A- and CO2 Bands

A del Águila, DS Efremenko, V Molina García… - Remote Sensing, 2020 - mdpi.com
Current atmospheric composition sensors provide a large amount of high spectral resolution
data. The accurate processing of this data employs time-consuming line-by-line (LBL) …

Modern methods of transfer theory used for solution of signal identification problems of XPS

VP Afanas' Ev, PS Kaplya, AV Lubenchenko… - Vacuum, 2014 - Elsevier
Within the framework of the classical radiative transfer theory [1],[2],[3], signal shaping of the
most recently needed method of electron spectroscopy–X-ray Photoemission Spectroscopy …

Solution of the radiative transfer equation for vertically inhomogeneous media by numerical integration solvers: comparative analysis

IA Chuprov, DN Konstantinov, D Efremenko… - Light and …, 2022 - elib.dlr.de
An efficiency of the singular value decomposition (SVD) method and ordinary differential
equation (ODE) solvers in finding the reflection matrix are compared. A reflection matrix can …