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Possibilities of creating high energy polarized photon beams at the end of bremsstrahlung spectrum and a method for analysis of degree of the beam polarization are considered in this paper.

Instrumentation and Detectors · Physics 2007-05-23 A. Aganyants

Differential cross sections two-body ($\gamma,p$) and ($\gamma,n$) reactions of the $^4$He nucleus disintegration were measured using the bremsstrahlung beam of photons at the KIPT linac LEA-300 at the maximum energy ${\rm…

We have compiled a set of electron-impact multiple ionization (EIMI) cross sections for astrophysically relevant ions. EIMI can have a significant effect on the ionization balance of non-equilibrium plasmas. For example, it can be important…

Instrumentation and Methods for Astrophysics · Physics 2017-12-06 Michael Hahn , Alfred Mueller , Daniel Wolf Savin

We discuss the size of the electron-antineutrino electron into electron-antineutrino electron cross section reduction due to the rejection of the events with a vertex bremsstrahlung photon above a certain energy in the final state. In…

High Energy Physics - Phenomenology · Physics 2009-10-31 C. Broggini , I. Masina , M. Moretti

We compute bremsstrahlung arising from the acceleration of individual charged baryons and mesons during the time evolution of high-energy Au+Au collisions at the Relativistic Heavy Ion Collider using a microscopic transport model. We…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. M. H. Wong , M. Belkacem , J. I. Kapusta , S. A. Bass , M. Bleicher , H. Stöcker

The distinction between the charged particle and antiparticle differential cross sections of high-energy bremsstrahlung in the electric field of a heavy atom is investigated. The consideration is based on the quasiclassical approximation to…

High Energy Physics - Phenomenology · Physics 2015-03-18 P. A. Krachkov , A. I. Milstein

Incoherent bremsstrahlung by high-energy particles in crystal is due to the thermal spread of atoms in relation to their equilibrium positions in the lattice. The simulation procedure developed earlier for the incoherent radiation is…

Accelerator Physics · Physics 2012-05-08 N. F. Shul'ga , V. V. Syshchenko , A. I. Tarnovsky

Absorption of infrared and visible radiation from stellar emission spectra by the negatively charged hydrogen ions H$^{-}$ is considered. The explicit formula for the photodetachment cross-section of the negatively charged hydrogen ion(s)…

Solar and Stellar Astrophysics · Physics 2015-06-01 Alexei M. Frolov

In the presence of an external Aharonov-Bohm potential, we investigate the two QED processes of the emission of a bremsstrahlung photon by an electron, and the production of an electron-positron pair by a single photon. Calculations are…

High Energy Physics - Theory · Physics 2009-11-10 U. A. al-Binni , M. S. Shikakhwa

Various differential cross sections of high-energy photon splitting in the electric fields of heavy atoms are calculated exactly in the parameter \al. The consideration is based on the quasiclassical approach applicable for small angles…

High Energy Physics - Phenomenology · Physics 2008-11-26 R. N. Lee , A. I. Milstein , V. M. Strakhovenko

The original binary-encounter Bethe model of Kim and Eugene Rudd (1994 Phys. Rev. A 50 3954-67) has proven to be an accurate analytical representation of total impact ionisation cross sections of electrons colliding with atoms and…

Atomic Physics · Physics 2026-03-12 Anthony Jeseněk , Alejandro Luque , Nikolai Lehtinen

We calculate the first Coulomb correction to the spectra of two processes: the electron bremsstrahlung and electron-positron photoproduction in the Coulomb field. We show that, in contrast to the results obtained in the Born approximation…

High Energy Physics - Phenomenology · Physics 2023-02-22 Petr A. Krachkov , Roman N. Lee

In this paper we estimate the total cross sections for field stimulated photoemissions and photoabsorptions by quasi-free electrons within a non-equilibrium plasma evolving from the strong coupling to the weak coupling regime. Such…

Atomic and Molecular Clusters · Physics 2015-05-13 F. Wang , B. Ziaja , E. Weckert

The bremsstrahlung produced when heavy nuclei collide is estimated for central collisions at the Relativistic Heavy Ion Collider. Soft photons can be used to infer the rapidity distribution of the outgoing charge. An experimental design is…

Nuclear Theory · Physics 2008-11-26 Sangyong Jeon , Joseph Kapusta , Alexei Chikanian , Jack Sandweiss

Future electron-positron linear colliders require a highly polarized electron beam with a pulse structure that depends primarily on whether the acceleration utilizes warm or superconducting rf structures. The International Linear Collider…

Purpose: Luminosity measurement at the Circular Electron-Positron Collider (CEPC) is required to achieve 10^-4 precision when operating at the center-of-mass energy of the Z-pole. Approximately 10^12 Z-bosons will be collected to refine…

High Energy Physics - Experiment · Physics 2026-01-12 Jiading Gong , Jun He , Rongyan He , Suen Hou , Quan Ji , Renjie Ma , Ming Qi , Haoyu Shi , Weimin Song , Xingyang Sun , Haijing Wang , Yilun Wang , Jialiang Zhang , Lei Zhang

The investigation of $e \gamma \to \nu W$ process is crucial for a possible high energy $e \gamma$ or $\gamma \gamma$ collider since it offers the possibility for both new physics discovery and precision measurements. The polarization of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Gokhan Unel

Measurement of the integrated luminosity at the International Linear Collider (ILC) will be accomplished by counting the rate of small angle Bhabha scattering events. The physics requirements for ILC set the constraint on the relative…

Instrumentation and Detectors · Physics 2013-01-14 M. Pandurovic , I. Bozovic-Jelisavcic

Proportional electroluminescence (EL) is the physical effect used in two-phase dark matter detectors, to optically record in the gas phase the ionization signal produced by particle scattering in the liquid phase. In our previous works the…

Instrumentation and Detectors · Physics 2022-04-26 E. Borisova , A. Buzulutskov