IEEE Organizations related to Bremsstrahlung

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Conferences related to Bremsstrahlung

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2021 IEEE Pulsed Power Conference (PPC)

The Pulsed Power Conference is held on a biannual basis and serves as the principal forum forthe exchange of information on pulsed power technology and engineering.


2020 IEEE 21st International Conference on Vacuum Electronics (IVEC)

Technical presentations will range from the fundamental physics of electron emission and modulated electron beams to the design and operation of devices at UHF to THz frequencies, theory and computational tool development, active and passive components, systems, and supporting technologies.System developers will find that IVEC provides a unique snapshot of the current state-of-the-art in vacuum electron devices. These devices continue to provide unmatched power and performance for advanced electromagnetic systems, particularly in the challenging frequency regimes of millimeter-wave and THz electronics.Plenary talks will provide insights into the history, the broad spectrum of fundamental physics, the scientific issues, and the technological applications driving the current directions in vacuum electronics research.


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation


2019 Particle Accelerator Conference (PAC)

Particle accelerator science and technology


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Periodicals related to Bremsstrahlung

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Xplore Articles related to Bremsstrahlung

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Solar EUV flux proxy using multifrequency solar radio flux

Space Weather, 2018

We report a new solar extreme ultraviolet (EUV; 26–34 nm) proxy using solar radio fluxes at six different frequencies (410; 610; 1,415; 2,695; 4,995; and 8,800 MHz) from ground-based observations. The radio fluxes (2002–2008) are used to estimate the solar EUV flux under nonsolar flare conditions through an artificial neural network trained with coincidently observed solar EUV (26–34 nm) fluxes ...


Resonant Parametric Interference Effect at Quantun Electrodinamics Processes in the Field of Two Pulsed Laser Waves

2018 International Conference Laser Optics (ICLO), 2018

In the present work we develop a theory of resonant spontaneous bremsstrahlung of an electron scattered by a Coulomb center and resonant electron-electron scattering in presence of an external field of two pulsed electromagnetic waves. The main aim of the work is detailed analysis of resonances of the studied process within the interference region.


Intense Relativistic Electron Beam Interaction With A Two-Pulse Radiography Converter

2017 IEEE International Conference on Plasma Science (ICOPS), 2017

Summary form only given. The interaction of a relativistic electron beam pulse (typical 20 MeV, 2 kA, 60 ns, 1 mm radius) with a Bremsstrahlung converter is numerically investigated in the context of two-pulse x-ray radiography. In such experiment, two short and intense pulses of electrons, about 1 μs delayed, create x-ray pulses to image a dynamic object at different ...


Bremsstrahlung Radiation from the Interaction of Short Laser Pulses with Dielectrics*

2017 IEEE International Conference on Plasma Science (ICOPS), 2017

An intense, short laser pulse incident on a dielectric can excite electrons from valence to the conduction band. As these electrons undergo scattering, from both ion centers and acoustic phonons, they emit Bremsstrahlung radiation. Here we present 1D model that describes the laser pulse dielectric interaction and the resulting Bremsstrahlung emission. Characteristics of the radiation (power, energy and spectra) are ...


Predictions of Bremsstrahlung Dose Output of “Gamma-4” Facility

2018 20th International Symposium on High-Current Electronics (ISHCE), 2018

The object under study is electrophysical facility “Gamma-4” aimed at generation of bremsstrahlung pulses with duration of ~50 ns. The results of calculations of spatial distribution of absorbed dose in the near-field are presented. The calculations have been made for two operating modes of the facility - fully electrically independent modules with separate vacuum diodes, and modules connected to the ...


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Educational Resources on Bremsstrahlung

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IEEE.tv Videos

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IEEE-USA E-Books

  • Solar EUV flux proxy using multifrequency solar radio flux

    We report a new solar extreme ultraviolet (EUV; 26–34 nm) proxy using solar radio fluxes at six different frequencies (410; 610; 1,415; 2,695; 4,995; and 8,800 MHz) from ground-based observations. The radio fluxes (2002–2008) are used to estimate the solar EUV flux under nonsolar flare conditions through an artificial neural network trained with coincidently observed solar EUV (26–34 nm) fluxes from the SOlar and Heliospheric Observatory/Solar EUV Monitor instrument. The radio fluxes at 610; 1,415; and 8,800 MHz are the three top contributors in the estimation of the solar EUV flux. The 1,415 MHz flux has the highest correlation coefficient (0.97) with the observed EUV flux. The estimated EUV flux retained the highest correlation coefficient (0.97) and had the lowest error in comparison with the observed EUV flux. The popular F10.7cm (2,800 MHz) is between 2,695 and 4,995 MHz, which have a minor contribution to the estimated EUV flux. On the other hand, F30cm (1,000 MHz) is between 610 and 1,415 MHz, the two major contributors to the estimated EUV flux. These features are consistent with a significantly better neutral density modeling using F30cm versus F10.7cm (Bruinsman, 2015, https://doi.org/10.1051/swsc/2015001). Similar results are obtained by applying the coefficients trained using a subset of the radio data (2002, 2004, and 2007) to a different subset of the data (2003, 2005, 2006, and 2008). These indicate that solar radio fluxes at multiple frequencies can be used to reliably retrieve solar EUV flux, one of the key parameters for space weather studies.

  • Resonant Parametric Interference Effect at Quantun Electrodinamics Processes in the Field of Two Pulsed Laser Waves

    In the present work we develop a theory of resonant spontaneous bremsstrahlung of an electron scattered by a Coulomb center and resonant electron-electron scattering in presence of an external field of two pulsed electromagnetic waves. The main aim of the work is detailed analysis of resonances of the studied process within the interference region.

  • Intense Relativistic Electron Beam Interaction With A Two-Pulse Radiography Converter

    Summary form only given. The interaction of a relativistic electron beam pulse (typical 20 MeV, 2 kA, 60 ns, 1 mm radius) with a Bremsstrahlung converter is numerically investigated in the context of two-pulse x-ray radiography. In such experiment, two short and intense pulses of electrons, about 1 μs delayed, create x-ray pulses to image a dynamic object at different times. Due to the high energy density deposited by the first pulse, the converter is partially ablated and surrounded by a plasma plume at the second electron pulse arrival [1]. The energy deposition of the electron beam in millimeter- sized converters is calculated by the Monte Carlo, muliparticle transport code DIANE developed at CEA. The subsequent converter material expansion is calculated by the CEA 3D hydrodynamic code HESIONE using a multiphase equation of state. The temperature in the target rises to few eV and to pressure to ~ 1 Mbar, which induces a fast expansion. The transverse flow of material decreases the mass converted interacting with the second electron pulse, whick is detrimental to the Bremsstrahlung yield. Another consequence of the converter ablation concerns the second electron pulse propagation through the centimeter-sized plasma plume which could lead to a variation of the X-ray source. We report on our theoretical and numerical work to describe these phenomena, and the desing of some key experiments aimed to test and validate our calculations.

  • Bremsstrahlung Radiation from the Interaction of Short Laser Pulses with Dielectrics*

    An intense, short laser pulse incident on a dielectric can excite electrons from valence to the conduction band. As these electrons undergo scattering, from both ion centers and acoustic phonons, they emit Bremsstrahlung radiation. Here we present 1D model that describes the laser pulse dielectric interaction and the resulting Bremsstrahlung emission. Characteristics of the radiation (power, energy and spectra) are computed for arbitrary ratios of electron collision frequency to radiation frequency [1]. The conversion efficiency of laser pulse energy into bremsstrahlung radiation depends strongly on both the fluence and duration of the pulse, saturating at values of about 10-5. Depending on whether the fluence is above or below the damage threshold of the material, the emission can originate either from the surface or the bulk of the dielectric. The radiation may provide a broadband light source for diagnostics.

  • Predictions of Bremsstrahlung Dose Output of “Gamma-4” Facility

    The object under study is electrophysical facility “Gamma-4” aimed at generation of bremsstrahlung pulses with duration of ~50 ns. The results of calculations of spatial distribution of absorbed dose in the near-field are presented. The calculations have been made for two operating modes of the facility - fully electrically independent modules with separate vacuum diodes, and modules connected to the common vacuum diode load. The calculations have been performed with the aid of Monte-Carlo code S-007 made in RFNC-VNIIEF.

  • Numerical simulations of relativistic double layers

    Summary form only given, as follows. Particle-in-cell numerical simulations of one-dimensional, time-dependent, fully relativistic double layers have been carried out. The scaling law for the layer width has been extended to relativistic potential drops and plasma temperatures. The layer creation and disruption cycles, as well as the beam-plasma instabilities driven by the layer, have been studied. Relativistic double layers may be a mechanism for producing intense radiation as observed in active galactic nuclei and pulsars, primarily by collective bremsstralung involving the charge-bunched electron beam and background plasma electrons.<>

  • The Effect of Small Doses of Gamma Radiation on the Structural Characteristics in Silicon

    Experimental studies were carried out by two different sources of gamma quanta. Samples were irradiated gamma - quantum radioisotope source 226Ra and electron accelerator braking gamma radiation - betatron Saratov state university. The form of the diffractograms shows the high crystallinity of the samples under study. The effect of gamma rays of radium led to a slight shift of the maximum of the reflex relative to the angle 2θ=29.18° to the left and a decrease in its width. The structure of the samples irradiated with γ-quanta of the bremsstrahlung of the betatron, according to the measurements, has undergone more significant and unexpected changes.

  • On Parameter Selection for Joint Spectral Reconstruction in Y90 SPECT

    Model-based image reconstruction for Y90 SPECT is challenging due to energy- dependent forward models including collimator-detector response (CDR) and attenuation correction factor (ACF). Since it is common to model CDR and ACF for a single energy for one energy window, there is a trade-off between the width of an energy window (number of primary counts) and the accuracy of modeling energy-dependent CDR and ACF. We previously proposed a joint spectral reconstruction (JSR) for Y90 SPECT to utilize wide energy window while accurately modeling energy-dependent forward projections for multiple windows and showed promising quantitative performance. However, the scale parameter model in JSR to relate images of different energy windows was not properly considered. In this work, we argue that scale parameters should reflect two probabilities: 1) different emission probabilities for the different windows and 2) detection probabilities in SPECT crystal that are different for the two windows. These arguments lead us to utilize Monte Carlo simulation of a point source instead of primary phantom counts for estimating scale parameters to avoid the effect of energy-dependent attenuations. We performed a SIMIND MC simulation study with a digital phantom similar to the NEMA PET phantom, but with larger hot spheres and a cold sphere in the center. MC simulation was done with 6 energy windows starting from 105keV to 285keV with the width of 30keV for each window using a new emission spectrum with both internal and external bremsstrahlung generated from theory and Penelope simulations. Our proposed JSR with new scale parameters yielded favorable quantitative results for both hot and cold spheres over other methods such as JSR with previous scale parameters, single spectral reconstructions with narrow and wide energy windows. Our proposed method yielded better recovery coefficients than other methods by 0.5-16.2% at the 30 iteration for all hot spheres. These differences were particularly substantial for the smallest hot sphere, 2.3-16.2%. For the cold sphere, JSR proposed yielded 3.0-15.8% lower residual count error than other methods.

  • Electron beam generation on the MIG water-line facility

    Experiments with electron beams have been performed on the MIG water-line pulse generator. Both pinched electron beams and double annular beams without pinching were realized with high reproducibility. The parameters of the beams and bremsstrahlung radiation produced have been measured.

  • Physical Mechanisms Inducing Electron Single-Event Upset

    With the increase of sensitivity of devices to single-event upsets (SEUs), the possibility to trigger an upset with incident electrons has been recently raised. All the mechanisms susceptible to trigger the SEUs are investigated in detail. New measurements performed on the field programmable gate array static random access memory based from Xilinx Spartan 6 at 1 MeV seem to confirm two SEU regions with the transition located around 10 MeV.



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