نتایج جستجو برای: bremsstrahlung

تعداد نتایج: 2286  

2007
Y. Yamamoto

Bremsstrahlung was measured as a function of stored beam current using the BGO scintillation spectrometer at the compact superconducting storage ring of Ritsumeikan University. Bremsstrahlung is emitted for collision of stored electrons and residual gas on the beam orbit. Yield of bremsstrahlung depend on stored beam current and residual gas density. We tried to determine gas density on the bea...

2008
Andrej B. Arbuzov

One-loop radiative corrections to the leptonic tensor in high energy bremsstrahlung on heavy nuclei are calculated. Virtual and real photon radiation is taken into account. Double bremsstrahlung is simulated by means of Monte Carlo. Numerical results are presented for the case of muon bremsstrahlung in conditions of the COMPASS experiment at CERN.

2014
C Köhn

Thunderstorms emit terrestrial gamma-ray flashes with photon energies of up to tens of MeV and electron-positron beams that are created by photons with energies above 1.022 MeV. These photons are produced through the bremsstrahlung process when energetic electrons collide with air molecules. However, presently used cross sections for bremsstrahlung treat only the interaction of the electrons wi...

Journal: :iranian journal of radiation research 0
i. akkurt suleyman demirel university, science and arts faculty physics department, isparta, turkey k. gunoglu suleyman demirel university, science and arts faculty physics department, isparta, turkey h.o. tekin suleyman demirel university, science and arts faculty physics department, isparta, turkey z.n. demirci suleyman demirel university, science and arts faculty physics department, isparta, turkey g. yegin celal bayar university, science and arts faculty physics department, manisa, turkey d. demir uludag university, science and arts faculty physics department, bursa, turkey

background: as bremsstrahlung photon beam fluence is important parameter to be known in a photonuclear reaction experiment as the number of produced particle is strongly depends on photon fluence. materials and methods: photon production yield from different thickness of aluminum target has been estimated using artificial neural network (ann) model. target thickness and incoming electron energy...

Journal: :Physical review. C, Nuclear physics 1994
Haglin Gale

We calculate elementary proton-proton and neutron-proton bremsstrahlung and their contribution to the e+e− invariant mass distribution. At 4.9 GeV, the proton-proton contribution is larger than neutron-proton, but it is small compared to recent data. We then make a first calculation of bremsstrahlung in nucleon-nucleon reactions with multi-hadron final states. Again at 4.9 GeV, the many-body br...

Journal: :iranian journal of medical physics 0
nasrollah jabbari assistant professor, medical imaging dept., urmia university of medical sciences, urmia, iran. bijan hashemi associate professor, medical physics dept., tarbiat modarres university, tehran, iran.

introduction: in clinical electron beams, most of bremsstrahlung radiation is produced by various linac head structures. this bremsstrahlung radiation dose is influenced by the geometry and construction of every component of the linac treatment head structures. thus, it can be expected that the amount of the contaminated photon dose due to bremsstrahlung radiation varies among different linacs,...

2016
Thomas W. Barber Martin H. Cherk Anne Powell Kenneth S. K. Yap Baki Billah Victor Kalff

BACKGROUND It is unclear how to predict which patients will respond to Y-90 radiosynoviorthesis. The aim of this study is to correlate clinical outcomes following Y-90 radiosynoviorthesis with bremsstrahlung and Y-90 PET/CT imaging findings. METHODS Fifty-one joints underwent bremsstrahlung planar and Y-90 PET/CT imaging following Y-90 radiosynoviorthesis. The Y-90 distribution pattern on bre...

Journal: :Physical Review D 2019

ژورنال: کومش 2020

Introduction: Most beta and gamma radiation radioisotopes used for treatment are not suitable for imaging. The bremsstrahlung images on a conventional gamma camera helped to localize the radionuclide within and outside of the lesion. Secondary scattering of gamma rays of higher energy and bremsstrahlung causes contamination in the energy window and reducing the contrast and resolution of the im...

2000
S. M. H. Wong M. Belkacem J. I. Kapusta S. A. Bass M. Bleicher H. Stöcker

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 elucidate the connection between bremsstrahlung and charge stopping by colliding artificial pure proton on pure neutron nuclei. From the intensity of low energy br...

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