نتایج جستجو برای: bremsstrahlung

تعداد نتایج: 2286  

Journal: :Physics of Plasmas 2022

Classical molecular-dynamics simulations (CMDS) have been conducted to investigate one of the main mechanisms responsible for absorption radiation by matter, namely, stimulated inverse bremsstrahlung. CMDS two components plasmas (electrons and ions) a large range electron densities temperatures, ionization Z = 1, were carried out with 2 × 10 6 particles using code LAMMPS. A parameterized model ...

Journal: :Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1994

1999
G. N. Afanasiev

The effects arising from accelerated and decelerated motion of a point charge inside a medium are studied. The motion is manifestly relativistic and may be produced by a constant uniform electric field. It is shown that in addition to the bremsstrahlung and Cherenkov shock waves, the electromagnetic shock wave arises when the charge particle velocity coincides with the light velocity in the med...

2009
Akiko Sekiguchi Masahiro Tsujimoto Shunji Kitamoto Manabu Ishida Kenji Hamaguchi Hideyuki Mori Yohko Tsuboi

We present the Suzaku results of η Carinae in the 5–50 keV range conducted twice around the apastron in 2005 August for 50 ks and in 2006 February for 20 ks. The X-ray Imaging Spectrometer (XIS) produced hard (5–12 keV) band spectra, resolving K shell lines from highly ionized Fe and Ni. The Hard X-ray Detector yielded a significant detection in the super-hard (15–50 keV) band, which is unconta...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2007
Seza A Gulec Jeffry A Siegel

Radiomicrosphere treatment involves the intrahepatic arterial administration of (90)Y-resin or (90)Y-glass microspheres. The microspheres are biocompatible, but not biodegradable, and little to no (90)Y leaches from the microspheres. Without any bioelimination, the beta-dose delivery is generally confined to the liver. Although U.S. Nuclear Regulatory Commission requirements permit patients tre...

Journal: :Annals of Nuclear Energy 2021

The applicability of the photofission reaction ratio (PFRR) method to identify high-enriched uranium is studied by switching photon source from Gaussian spectrum a bremsstrahlung spectrum. combination 6 and 11 MeV energy was used in previous study for applying PFRR because cross sections between 235U 238U at these two energies differ significantly. A parametric conducted with incident electron ...

Journal: :Social Science Research Network 2021

Photon exchange due to nuclear bremsstrahlung during collisions can cause Coulomb excitation in the projectile and target nuclei. The corresponding process originated timescales also be observed atomic phenomenon experimentally if it delayed by at least with an attosecond or longer timescales. We have found that this happens a mechanism involving Eisenbud-Wigner-Smith time delay process. estima...

2015
K. Ott

Since 22nd October 2012 the synchrotron light source BESSY is operated in top-up mode. Losses of electrons during injection cause an electromagnetic cascade, that consists of high energetic photons of the bremsstrahlung, and secondary electrons and positrons from the pair creations. The bremsstrahlung spectrum has a maximum at 1.022 MeV owing to pair creations. The spectrum has a high energetic...

2009
Vladislav Konovalov

In the article the different kinds of radiations are considered Bremsstrahlung and magnito-bremsstrahlung Official physics considers, that the driving electric charge beams electromagnetic waves, both at positive, and at negative acceleration. The writer insists that the Bremsstrahlung is possible only, i.e. at negative acceleration of electric charge. Let's consider the elementary case, when t...

2010
M. Günther K. Sonnabend K. Vogt V. Bagnoud M. Roth

We activated compound activation targets in conjunction with a novel nuclear pyrometry method [1] for the investigation of the high-energy electron and bremsstrahlung component in relativistic laser-plasma interactions using the PHELIX laser facility at GSI. We used the short pulse of the PHELIX laser with intensities of more than 10 W/cm and laser energies arround 100 J with a pulse duration o...

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