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We consider a density estimation problem arising in nuclear physics. Gamma photons are impinging on a semiconductor detector, producing pulses of current. The integral of this pulse is equal to the total amount of charge created by the…

Statistics Theory · Mathematics 2007-06-13 Eric Moulines , Francois Roueff , Antoine Souloumiac , Thomas Trigano

Using a multipole expansion of the radiated field generated by a classical electric current, we present a way to interprete the bremsstrahlung spectra of low energy heavy ion collisions. We perform the calculation explicitely for the system…

Nuclear Theory · Physics 2009-10-30 Ulrich Eichmann , Walter Greiner

We compare fully differential exact results for the virtual photon correction to single hard photon bremsstrahlung obtained using independent calculations, both for electron-positron annihilation at high-energy colliders and for radiative…

High Energy Physics - Phenomenology · Physics 2009-11-11 S. Jadach , B. F. L. Ward , S. A. Yost

We present a Monte Carlo (MC) code we wrote to simulate the photospheric process and to study the photospheric spectrum above the peak energy. Our simulations were performed with a photon to electron ratio $N_{\gamma}/N_{e} = 10^{5}$, as…

High Energy Astrophysical Phenomena · Physics 2016-01-13 Rodolfo Santana , Patrick Crumley , Roberto A. Hernandez , Pawan Kumar

Ultra-relativistic electrons initiate electromagnetic showers in ordinary matter that evolve through bremsstrahlung and pair production. At very high energy, the quantum mechanical duration of bremsstrahlung becomes longer than the mean…

High Energy Physics - Phenomenology · Physics 2026-05-06 Peter Arnold , Joshua Bautista , Omar Elgedawy , Shahin Iqbal

Models for characterization of laser-accelerated electron via its produced bremsstrahlung are provided for both thin and thick targets. An effective temperature functional is proposed to overcome the so-called cold and hot "temperatures" in…

Instrumentation and Detectors · Physics 2018-08-01 Guillermo Hernández , Francisco Fernández

Bremsstrahlung radiation emission is an important energy loss mechanism for energetic electrons in plasmas. In this paper we investigate the effect of spontaneous bremsstrahlung emission on the momentum-space structure of the electron…

Plasma Physics · Physics 2016-09-21 Ola Embréus , Adam Stahl , Tünde Fülöp

Electron emission spectra of a thin gold foil after photon interaction were measured over the energy range between 50 eV and 9500 eV to provide reference data for Monte Carlo radiation-transport simulations. Experiments were performed with…

A new quantum electrodynamical method of calculations of bremsstrahlung spectra in the $\alpha$-decay of heavy nuclei taking into account the angle between the directions of $\alpha$-particle motion (or its tunneling) and photon emission is…

Nuclear Theory · Physics 2009-09-29 Sergei P. Maydanyuk , Vladislav S. Olkhovsky

Within an effective hadronic model including electromagnetic interactions via a U$_{\rm em}$(1) gauge, we reinvestigate photon Bremsstrahlung from a hot hadronic gas as expected to be formed in relativistic heavy-ion collisions at SPS…

Nuclear Theory · Physics 2008-11-26 W. Liu , R. Rapp

We calculate the leading-order QED radiative corrections to the process $e^- p\rightarrow e^- p l^- l^+ $ in the soft-photon approximation, in two different energy regimes which are of relevance to extract nucleon structure information. In…

High Energy Physics - Phenomenology · Physics 2021-11-10 Matthias Heller , Niklas Keil , Marc Vanderhaeghen

Within thunderstorms electrons can gain energies of up to hundred(s) of MeV. These electrons can create X-rays and gamma-rays as Bremsstrahlung when they collide with air molecules. Here we calculate the distribution of angles between…

Atmospheric and Oceanic Physics · Physics 2016-12-02 Christoph Köhn , Ute Ebert

We present a treatment of the next-to-leading-order radiative corrections to unpolarized Moller and Bhabha scattering without resorting to ultra-relativistic approximations. We extend existing soft-photon radiative corrections with new…

Nuclear Experiment · Physics 2016-08-17 Charles S. Epstein , Richard G. Milner

The bremsstrahlung cross section of electron in the atomic electric field is re-derived using the time ordered perturbative theory. The results are compared with the Bethe-Heitler formula. We indicate that both the TOPT-description and a…

High Energy Physics - Phenomenology · Physics 2019-09-11 Wei Zhu

Absolute measurements were conducted to study the bremsstrahlung emission from ~5-25 keV electrons incident on three thick solid conductive compounds of MoSi$_2$, TiB$_2$ and ZrB$_2$. The additivity approximation was applied in the Monte…

Atomic Physics · Physics 2024-05-30 Heng Zhang , Zhu An , Jingjun Zhu , Hong Huang

For high precision measurements of K decays, the presence of radiated photons cannot be neglected. The Monte Carlo simulations must include the radiative corrections in order to compute the correct event counting and efficiency…

High Energy Physics - Phenomenology · Physics 2009-01-07 C. Gatti

Within of the framework of semiclassical approximation a general formalism for deriving an effective current generating bremsstrahlung of arbitrary number of soft gluons (longitudinal or transverse ones) in scattering of higher-energy…

High Energy Physics - Phenomenology · Physics 2007-05-23 Yu. A. Markov , M. A. Markova , A. N. Vall

Model of angular bremsstrahlung of photons emitted during $\alpha$-decay is presented. A special emphasis is given on development of unified formalism of matrix elements in the dipole and multipolar approaches. A probability of the emission…

Nuclear Theory · Physics 2015-05-13 Sergei P. Maydanyuk

We present the complete electroweak one-loop corrections to top-pair production at a linear e^+e^- collider in the continuum region. Besides weak and photonic virtual corrections, real hard bremsstrahlung with simple realistic kinematical…

High Energy Physics - Phenomenology · Physics 2009-11-10 J. Fleischer , A. Leike , T. Riemann , A. Werthenbach

Several models for the simulation of photon elastic scattering are quantitatively evaluated with respect to a large collection of experimental data retrieved from the literature. They include models based on the form factor approximation,…

Computational Physics · Physics 2012-09-27 Matej Batic , Gabriela Hoff , Maria Grazia Pia , Paolo Saracco