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bremsstrahlung</title> <meta name="description" content="Search results for: bremsstrahlung"> <meta name="keywords" content="bremsstrahlung"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="bremsstrahlung"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 9</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: bremsstrahlung</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> Investigation of Bremsstrahlung, Braking Radiation from Beta-Emitting Radioactive Sources</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Metin%20K%C3%B6ms%C3%B6ken">Metin Kömsöken</a>, <a href="https://publications.waset.org/abstracts/search?q=Ay%C5%9Fe%20G%C3%BCne%C5%9F%20Tan%C4%B1r"> Ayşe Güneş Tanır</a>, <a href="https://publications.waset.org/abstracts/search?q=Onur%20Karaman"> Onur Karaman </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Usage of high energy charged particles for diagnosis and treatment has been widespread in medicine. The main purpose is to investigate that Bremsstrahlung which occurs by tissue interactions with charged particles should not be neglected. Nuclear stopping power (Bremsstrahlung) was calculated for lung, brain, skin, muscle, bone (cortical) and water targets for the energies of electrons obtained from LINAC used in radiotherapy and of β+ sources used in positron emission tomography (PET). These calculations were done by using the four different analytical functions including classical Bethe-Bloch, Tsoulfanidis, modified Bethe-Bloch and modified Tsoulfanidis equations. It was concluded that obtained results were compatible with that of National Institute of Standards and Technology (NIST-ESTAR). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%CE%B2-%20emitting%20source" title="β- emitting source">β- emitting source</a>, <a href="https://publications.waset.org/abstracts/search?q=bremsstrahlung" title=" bremsstrahlung"> bremsstrahlung</a>, <a href="https://publications.waset.org/abstracts/search?q=therapeutic%20radionuclides" title=" therapeutic radionuclides"> therapeutic radionuclides</a>, <a href="https://publications.waset.org/abstracts/search?q=LINAC" title=" LINAC"> LINAC</a> </p> <a href="https://publications.waset.org/abstracts/70365/investigation-of-bremsstrahlung-braking-radiation-from-beta-emitting-radioactive-sources" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70365.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">333</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8</span> Cross Section Measurement for Formation of Metastable State of ¹¹¹ᵐCd through ¹¹¹Cd (γ, γ`) ¹¹¹ᵐCd Reaction Induced by Bremsstrahlung Generated through 6 MeV Electrons</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vishal%20D.%20Bharud">Vishal D. Bharud</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20J.%20Patil"> B. J. Patil</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20S.%20Dahiwale"> S. S. Dahiwale</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20N.%20Bhoraskar"> V. N. Bhoraskar</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20D.%20Dhole"> S. D. Dhole</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photon induced average reaction cross section of ¹¹¹Cd (γ, γ`) ¹¹¹ᵐCd reaction was experimentally determined for the bremsstrahlung energy spectrum of 6 MeV by utilizing the activation and offline γ-ray spectrometric techniques. The 6 MeV electron accelerator Racetrack Microtron of Savitribai Phule Pune University, Pune was used for the experimental work. The bremsstrahlung spectrum generated by bombarding 6 MeV electrons on lead target was theoretically estimated by FLUKA code. Bremsstrahlung radiation can have energies exceeding the threshold of the particle emission, which is normally above 6 MeV. Photons of energies below the particle emission threshold undergo absorption into discrete energy levels, with possibility of exciting nuclei to excited state including metastable state. The ¹¹¹Cd (γ, γ`) ¹¹¹ᵐCd reaction cross sections were calculated at different energies of bombarding Photon by using the TALYS 1.8 computer code with a default parameter. The focus of the present work was to study the (γ,γ’) reaction for exciting ¹¹¹Cd nuclei to metastable states which have threshold energy below 3 MeV. The flux weighted average cross section was obtained from the theoretical values of TALYS 1.8 and TENDL 2017 and is found to be in good agreement with the present experimental cross section. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bremsstrahlung" title="bremsstrahlung">bremsstrahlung</a>, <a href="https://publications.waset.org/abstracts/search?q=cross%20section" title=" cross section"> cross section</a>, <a href="https://publications.waset.org/abstracts/search?q=FLUKA" title=" FLUKA"> FLUKA</a>, <a href="https://publications.waset.org/abstracts/search?q=TALYS-1.8" title=" TALYS-1.8"> TALYS-1.8</a> </p> <a href="https://publications.waset.org/abstracts/97710/cross-section-measurement-for-formation-of-metastable-state-of-111cd-through-111cd-gh-gh-111cd-reaction-induced-by-bremsstrahlung-generated-through-6-mev-electrons" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/97710.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">173</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Theoretical Investigation of Proton-Bore Fusion in Hot Spots </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Morteza%20Habibi">Morteza Habibi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As an alternative to D–T fuel, one can consider advanced fuels like D3-He and p-11B fuels, which have potential advantages concerning availability and/or environmental impact. Hot spots are micron-sized magnetically self-contained sources observed in pinched plasma devices. In hot spots, fusion power for 120 keV < Ti < 800 keV and 32 keV < Te < 129 keV exceeds bremsstrahlung loss and fraction of fusion power to bremsstrahlung loss reaches to 1.9. In this case, gain factor for a 150 kJ typical pulsed generator as a hot spot source will be 7.8 which is considerable for a commercial pinched plasma device. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=P-B%20fuel" title="P-B fuel">P-B fuel</a>, <a href="https://publications.waset.org/abstracts/search?q=hot%20spot" title=" hot spot"> hot spot</a>, <a href="https://publications.waset.org/abstracts/search?q=bremmsstrahlung%20loss" title=" bremmsstrahlung loss"> bremmsstrahlung loss</a>, <a href="https://publications.waset.org/abstracts/search?q=ion%20temperature" title=" ion temperature "> ion temperature </a> </p> <a href="https://publications.waset.org/abstracts/30369/theoretical-investigation-of-proton-bore-fusion-in-hot-spots" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30369.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">528</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> Quantom Magnetic Effects of P-B Fusion in Plasma Focus Devices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Habibi">M. Habibi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The feasibility of proton-boron fusion in plasmoids caused by magneto hydrodynamics instabilities in plasma focus devices is studied analytically. In plasmoids, fusion power for 76 keV < Ti < 1500 keV exceeds bremsstrahlung loss (W/Pb=5.39). In such situation gain factor and the ratio of Te to Ti for a typical 150 kJ plasma focus device will be 7.8 and 4.8 respectively. Also with considering the ion viscous heating effect, W/Pb and Ti/Te will be 2.7 and 6 respectively. Strong magnetic field will reduces ion-electron collision rate due to quantization of electron orbits. While approximately there is no change in electron-ion collision rate, the effect of quantum magnetic field makes ions much hotter than electrons which enhance the fraction of fusion power to bremsstrahlung loss. Therefore self-sustained p-11B fusion reactions would be possible and it could be said that p-11B fuelled plasma focus device is a clean and efficient source of energy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=plasmoids" title="plasmoids">plasmoids</a>, <a href="https://publications.waset.org/abstracts/search?q=p11B%20fuel" title=" p11B fuel"> p11B fuel</a>, <a href="https://publications.waset.org/abstracts/search?q=ion%20viscous%20heating" title=" ion viscous heating"> ion viscous heating</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20magnetic%20field" title=" quantum magnetic field"> quantum magnetic field</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20focus%20device" title=" plasma focus device"> plasma focus device</a> </p> <a href="https://publications.waset.org/abstracts/26776/quantom-magnetic-effects-of-p-b-fusion-in-plasma-focus-devices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26776.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">463</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">5</span> Application of MRI in Radioembolization Imaging and Dosimetry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salehi%20Zahabi%20Saleh">Salehi Zahabi Saleh</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajabi%20Hosaien"> Rajabi Hosaien</a>, <a href="https://publications.waset.org/abstracts/search?q=Rasaneh%20Samira"> Rasaneh Samira</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Yttrium-90 (90Y) radioembolisation(RE) is increasingly used for the treatment of patients with unresectable primary or metastatic liver tumours. Image-based approaches to assess microsphere distribution after RE have gained interest but are mostly hampered by the limited imaging possibilities of the Isotope 90Y. Quantitative 90Y-SPECT imaging has limited spatial resolution because it is based on 90Y Bremsstrahlung whereas 90Y-PET has better spatial resolution but low sensitivity. As a consequence, new alternative methods of visualizing the microspheres have been investigated, such as MR imaging of iron-labelled microspheres. It was also shown that MRI combines high sensitivity with high spatial and temporal resolution and with superior soft tissue contrast and thus can be used to cover a broad range of clinically interesting imaging parameters.The aim of the study in this article was to investigate the capability of MRI to measure the intrahepatic microsphere distribution in order to quantify the absorbed radiation dose in RE. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radioembolisation" title="radioembolisation">radioembolisation</a>, <a href="https://publications.waset.org/abstracts/search?q=MRI" title=" MRI"> MRI</a>, <a href="https://publications.waset.org/abstracts/search?q=imaging" title=" imaging"> imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=dosimetry" title=" dosimetry"> dosimetry</a> </p> <a href="https://publications.waset.org/abstracts/45127/application-of-mri-in-radioembolization-imaging-and-dosimetry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45127.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4</span> Neutron Contamination in 18 MV Medical Linear Accelerator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Onur%20Karaman">Onur Karaman</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Gunes%20Tanir"> A. Gunes Tanir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photon radiation therapy used to treat cancer is one of the most important methods. However, photon beam collimator materials in Linear Accelerator (LINAC) head generally contains heavy elements is used and the interaction of bremsstrahlung photon with such heavy nuclei, the neutron can be produced inside the treatment rooms. In radiation therapy, neutron contamination contributes to the risk of secondary malignancies in patients, also physicians working in this field. Since the neutron is more dangerous than photon, it is important to determine neutron dose during radiotherapy treatment. In this study, it is aimed to analyze the effect of field size, distance from axis and depth on the amount of in-field and out-field neutron contamination for ElektaVmat accelerator with 18 MV nominal energy. The photon spectra at the distance of 75, 150, 225, 300 cm from target and on the isocenter of beam were scored for 5x5, 10x10, 20x20, 30x30 and 40x40 cm2 fields. Results demonstrated that the neutron spectra and dose are dependent on field size and distances. Beyond 225 cm of isocenter, the dependence of the neutron dose on field size is minimal. As a result, it is concluded that as the open field increases, neutron dose determined decreases. It is important to remember that when treating with high energy photons, the dose from contamination neutrons must be considered as it is much greater than the photon dose. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiotherapy" title="radiotherapy">radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=neutron%20contamination" title=" neutron contamination"> neutron contamination</a>, <a href="https://publications.waset.org/abstracts/search?q=linear%20accelerators" title=" linear accelerators"> linear accelerators</a>, <a href="https://publications.waset.org/abstracts/search?q=photon" title=" photon"> photon</a> </p> <a href="https://publications.waset.org/abstracts/70366/neutron-contamination-in-18-mv-medical-linear-accelerator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70366.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">348</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Radiation Emission from Ultra-Relativistic Plasma Electrons in Short-Pulse Laser Light Interactions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Ondarza-Rovira">R. Ondarza-Rovira</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20J.%20M.%20Boyd"> T. J. M. Boyd</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Intense femtosecond laser light incident on over-critical density plasmas has shown to emit a prolific number of high-order harmonics of the driver frequency, with spectra characterized by power-law decays Pm ~ m-p, where m denotes the harmonic order and p the spectral decay index. When the laser pulse is p-polarized, plasma effects do modify the harmonic spectrum, weakening the so-called universal decay with p=8/3 to p=5/3, or below. In this work, appeal is made to a single particle radiation model in support of the predictions from particle-in-cell (PIC) simulations. Using this numerical technique we further show that the emission radiated by electrons -that are relativistically accelerated by the laser field inside the plasma, after being expelled into vacuum, the so-called Brunel electrons is characterized not only by the plasma line but also by ultraviolet harmonic orders described by the 5/3 decay index. Results obtained from these simulations suggest that for ultra-relativistic light intensities, the spectral decay index is further reduced, with p now in the range 2/3 ≤ p ≤ 4/3. This reduction is indicative of a transition from the regime where Brunel-induced plasma radiation influences the spectrum to one dominated by bremsstrahlung emission from the Brunel electrons. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultra-relativistic" title="ultra-relativistic">ultra-relativistic</a>, <a href="https://publications.waset.org/abstracts/search?q=laser-plasma%20interactions" title=" laser-plasma interactions"> laser-plasma interactions</a>, <a href="https://publications.waset.org/abstracts/search?q=high-order%20harmonic%20emission" title=" high-order harmonic emission"> high-order harmonic emission</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation" title=" radiation"> radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=spectrum" title=" spectrum "> spectrum </a> </p> <a href="https://publications.waset.org/abstracts/27628/radiation-emission-from-ultra-relativistic-plasma-electrons-in-short-pulse-laser-light-interactions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27628.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">464</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2</span> Monte Carlo Simulation of X-Ray Spectra in Diagnostic Radiology and Mammography Using MCNP4C</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sahar%20Heidary">Sahar Heidary</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramin%20Ghasemi%20Shayan"> Ramin Ghasemi Shayan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The overall goal Monte Carlo N-atom radioactivity transference PC program (MCNP4C) was done for the regeneration of x-ray groups in diagnostic radiology and mammography. The electrons were transported till they slow down and stopover in the target. Both bremsstrahlung and characteristic x-ray creation were measured in this study. In this issue, the x-ray spectra forecast by several computational models recycled in the diagnostic radiology and mammography energy kind have been calculated by appraisal with dignified spectra and their outcome on the scheming of absorbed dose and effective dose (ED) told to the adult ORNL hermaphroditic phantom quantified. This comprises practical models (TASMIP and MASMIP), semi-practical models (X-rayb&m, X-raytbc, XCOMP, IPEM, Tucker et al., and Blough et al.), and Monte Carlo modeling (EGS4, ITS3.0, and MCNP4C). Images got consuming synchrotron radiation (SR) and both screen-film and the CR system were related with images of the similar trials attained with digital mammography equipment. In sight of the worthy feature of the effects gained, the CR system was used in two mammographic inspections with SR. For separately mammography unit, the capability acquiesced bilateral mediolateral oblique (MLO) and craniocaudal(CC) mammograms attained in a woman with fatty breasts and a woman with dense breasts. Referees planned the common groups and definite absences that managed to a choice to miscarry the part that formed the scientific imaginings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mammography" title="mammography">mammography</a>, <a href="https://publications.waset.org/abstracts/search?q=monte%20carlo" title=" monte carlo"> monte carlo</a>, <a href="https://publications.waset.org/abstracts/search?q=effective%20dose" title=" effective dose"> effective dose</a>, <a href="https://publications.waset.org/abstracts/search?q=radiology" title=" radiology"> radiology</a> </p> <a href="https://publications.waset.org/abstracts/144857/monte-carlo-simulation-of-x-ray-spectra-in-diagnostic-radiology-and-mammography-using-mcnp4c" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144857.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">131</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1</span> Feedback Matrix Approach for Relativistic Runaway Electron Avalanches Dynamics in Complex Electric Field Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Egor%20Stadnichuk">Egor Stadnichuk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Relativistic runaway electron avalanches (RREA) are a widely accepted source of thunderstorm gamma-radiation. In regions with huge electric field strength, RREA can multiply via relativistic feedback. The relativistic feedback is caused both by positron production and by runaway electron bremsstrahlung gamma-rays reversal. In complex multilayer thunderstorm electric field structures, an additional reactor feedback mechanism appears due to gamma-ray exchange between separate strong electric field regions with different electric field directions. The study of this reactor mechanism in conjunction with the relativistic feedback with Monte Carlo simulations or by direct solution of the kinetic Boltzmann equation requires a significant amount of computational time. In this work, a theoretical approach to study feedback mechanisms in RREA physics is developed. It is based on the matrix of feedback operators construction. With the feedback matrix, the problem of the dynamics of avalanches in complex electric structures is reduced to the problem of finding eigenvectors and eigenvalues. A method of matrix elements calculation is proposed. The proposed concept was used to study the dynamics of RREAs in multilayer thunderclouds. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=terrestrial%20Gamma-ray%20flashes" title="terrestrial Gamma-ray flashes">terrestrial Gamma-ray flashes</a>, <a href="https://publications.waset.org/abstracts/search?q=thunderstorm%20ground%20enhancement" title=" thunderstorm ground enhancement"> thunderstorm ground enhancement</a>, <a href="https://publications.waset.org/abstracts/search?q=relativistic%20runaway%20electron%20avalanches" title=" relativistic runaway electron avalanches"> relativistic runaway electron avalanches</a>, <a href="https://publications.waset.org/abstracts/search?q=gamma-rays" title=" gamma-rays"> gamma-rays</a>, <a href="https://publications.waset.org/abstracts/search?q=high-energy%20atmospheric%20physics" title=" high-energy atmospheric physics"> high-energy atmospheric physics</a>, <a href="https://publications.waset.org/abstracts/search?q=TGF" title=" TGF"> TGF</a>, <a href="https://publications.waset.org/abstracts/search?q=TGE" title=" TGE"> TGE</a>, <a href="https://publications.waset.org/abstracts/search?q=thunderstorm" title=" thunderstorm"> thunderstorm</a>, <a href="https://publications.waset.org/abstracts/search?q=relativistic%20feedback" title=" relativistic feedback"> relativistic feedback</a>, <a href="https://publications.waset.org/abstracts/search?q=reactor%20feedback" title=" reactor feedback"> reactor feedback</a>, <a href="https://publications.waset.org/abstracts/search?q=reactor%20model" title=" reactor model"> reactor model</a> </p> <a href="https://publications.waset.org/abstracts/142458/feedback-matrix-approach-for-relativistic-runaway-electron-avalanches-dynamics-in-complex-electric-field-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142458.pdf" target="_blank" class="btn btn-primary 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