high energy photon beams
Laser-driven particle and photon beams and some applications
... This issue has been discussed in detail by Zepf et al (2001, 2003) who concluded that the most energetic ions were emitted from the front, at least in the case of thicker targets. These authors acknowledged, however, ...
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Electron and photon beams interacting with plasma
... the energy loss rate for photons depends on their frequency, the energy depletion from a short laser pulse accelerates and is explosively ...the energy loss rate of a short electron bunch is ...
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Dosimetric Evaluation of Heterogeneities in Small Circular Fields of 6 MV Photon Beams with EBT2 and EDR2 Films: Comparison with Monte Carlo Calculation
... radiation photon beams with field sizes smaller than 4 × 4 cm 2 to limited volume of ...deliver high dose with accu- rate position and dose of ±1 mm of ±5%, respectively ...row photon ...
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High energy photon reference for radiation protection: technical design of the LINAC beam and ionization chambers; and calculation of monoenergetic conversion coefficients
... for high-energy (6 – 9 MeV) photon beams for radiation protection ...of high-energy photonic radiation (proton accelerators, nuclear re- actors) are very rare and need large ...
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A kernel-based dose calculation algorithm for kV photon beams with explicit handling of energy and material dependencies.
... the energy and material sampling points, as well as improvements to the head model and the adaptation of input parameters of our dose algorithm to the treatment ...advance high-precision small animal ...
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Optimal energy for cell radiosensitivity enhancement by gold nanoparticles using synchrotron-based monoenergetic photon beams
... the high absorption coefficient of gold atoms, stemming from their high atomic number (Z) and physical ...on photon energy, which theoretically is predicted to occur in the kilovoltage range ...
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An Analysis on the Sign of Gravity of Antimatter
... positron beams with high intensity and high density using a setup in which a compact laser beam above an argon gas jet emitted from a supersonic conical nozzle to produce electrons which are directed ...
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A New High Energy Photon Tagger for the H1 - Detector at HERA
... the photon takes a large proportion of the initial electron ...the high radiation doses to which they are subjected in their position close to the HERA ...
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High intensity X/γ photon beams for nuclear physics and photonics
... the energy than that given by eq. 1, which determines the maximum energy of photons back-scattered on axis at θ = ...mono-chromatic photon beam one needs to select a narrow angle around the electron ...
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Challenges of dosimetry of ultra-short pulsed very high energy electron beams
... electron beams with energies exceeding 100 MeV have been studied for lung cancer [9] and prostate cancer treatment ...electron beams with energies above 100 MeV can achieve a very good dose conformation, ...
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An Efficient Energy Transfer in Tb
... absorbed high energy photon into two lower energy photons with quantum efficiency (QE) higher than 100% involves ET from sensitizer/s to activator/s 1 ...
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OPTIMUM STOICHIOMETRY OF CADMIUM ZINC TELLURIDE THIN FILMS IN THE LIGHT OF OPTICAL, STRUCTURAL AND PHOTON GENERATED GAIN STUDIES
... CdTe and its associated materials suffer from ohmic contact problems because of their high electron affinity and consequently large work function. Author of the article [9] has reported the possibility of nickel ...
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Optical Characterization and Surface Morphology of Sno2 Thin Films Prepared By Spin Coating Technique
... direct energy gap, the estimated value of the energy gap is in agreement with the reported ...The high values of absorbance in UV region and low in VIS-NIR region allows the thin film to screen off ...
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Photoproduction of ETA mesons from hydrogen at photon energies between 0.8 and 1.45 GeV
... A photon or electron of sufficiently high energy to shower appreciably would produce several such particles (electrons and positrons), and would therefore generate [r] ...
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Resonant core spectroscopies of the charge transfer interactions between C60 and the surfaces of Au(111), Ag(111), Cu(111) and Pt(111)
... decay as illustrated in Fig. 1f. Two LUMO electrons are required to drive this Core/LUMO/LUMO Auger-like transition at all photon energies. The originally photoexcited electron is not shown in the scheme since we ...
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New results on low energy exclusive hadronic final states from BABAR
... final BABAR results on this channel, presented in Ref. [6], are now available. These results supersede preliminary BABAR results from 2007 that were based on only around half the final BABAR data set. Exactly two ...
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THz Quantum-Cascade Lasers for Heterodyne Techniques
... THz semiconductor lasers Semiconductor device requirements: ¥ Low enough energy level separation for THz photon emission ¥ More electrons at high energy than low energy i.e., a populatio[r] ...
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Numerical studies of ion beam in NX2 plasma focus for different applied voltage
... beam energy and current densities with pressure may be explained as ...higher energy beam and current densities are obtained at optimum pressure due to the increase in density of the pinch radiating ...
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Analysis of Radiation Transport through Multileaf Collimators Using BEAMnrc Code
... and a monoenergetic electron beam source of kinetic energy of 5.7 MeV with FWHM for the X and Y directions of 0.2 cm was incident on the target. The primary collimator, flattening filter and ion chamber are ...
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Time of flight based diagnostics for high energy laser driven ion beams
... the energy selection ...selected energy, thus the analysis procedure to extract the energy spectrum will be more straightforward as shown in ...beam energy spectrum as a function of the ...
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