Download or read book Electron and Bremsstrahlung Penetration and Dose Calculation written by John W. Watts (Jr.) and published by . This book was released on 1971 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various techniques for calculation of electron and bremsstrahlung dose deposition are described. New energy deposition, transmission, and reflection coefficients for electrons incident on plane slabs for angles of 0, 30, 60,7 5, and 89.9 deg and energies of 0.5, 1.0, 2.0, 3.0,4 .0, 5.0, 6.0, and 10.0 MeV are presented, and methods for their use in electron dose calculations are developed. A method for electron dose calculations using the "straight-ahead" approximation is also developed and the various methods are compared and found to be in good agreement. Accurate and approximate methods of calculating bremsstrahlung dose are also derived and compared.
Download or read book Electron and Bremsstrahlung Penetration and Dose Calculation written by John W. Watts and published by . This book was released on 1971 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of Thick Target Bremsstrahlung Radiation from Electrons of 1 00 1 50 and 2 00 Mev written by E. A. Edelsack and published by . This book was released on 1958 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles for the Calculation of Radiation Dose Rates in Space Vehicles written by Robley Dunglison Evans and published by . This book was released on 1961 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis takes into account the angular distribution of the incident protons and electrons and the angular distribution of the electron bremsstrahlung. The distribution with depth in the propellant is determined for the dose rate due to protons, for the dose rate due to electron bremsstrahlung, and for the deposition of stopped protons. Whereas the dose rates for monoenergetic protons or electrons are maximum at the surface of the propellant, the deposition of protons has its minimum at the surface and increases linearly with depth up to the range of the protons. For the case of protons, the maximum surface dose rate depends primarily on the total number of protons striking the surface, and only slightly on their energy, so long as their energy is sufficient for them to clearly penetrate the surface medium. Illustrative calculations are carried out for the Freden and White spectrum of protons and for the Walt et al. spectrum of electrons incident on thin-walled stainless steel vehicles carrying liquid H2 or liquid O2. The numerical results for O2 would be closely similar to those for biological materials. (Author).
Download or read book Calculation of the Bremsstrahlung from Li 8 Electrons written by L. H. Weinberg and published by . This book was released on 1953 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1977 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calculating X ray Tube Spectra written by Gavin Poludniowski and published by CRC Press. This book was released on 2022-05-09 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculating x-ray tube spectra provides a comprehensive review of the modelling of x-ray tube emissions, with a focus on medical imaging and radiotherapy applications. It begins by covering the relevant background, before discussing modelling approaches, including both analytical formulations and Monte Carlo simulation. Historical context is provided, based on the past century of literature, as well as a summary of recent developments and insights. The book finishes with example applications for spectrum models, including beam quality prediction and the calculation of dosimetric and image-quality metrics. This book will be a valuable resource for postgraduate and advanced undergraduate students studying medical radiation physics, in addition to those in teaching, research, industry and healthcare settings whose work involves x-ray tubes. Key Features: Covers simple modelling approaches as well as full Monte Carlo simulation of x-ray tubes Bremsstrahlung and characteristic contributions to the spectrum are discussed in detail Learning is supported by free open-source software and an online repository of code.
Download or read book Gas Bremsstrahlung and Associated Photon neutron Shielding Calculations for Electron Storage Rings written by and published by . This book was released on 1994 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EGS4 electron-photon Monte Carlo code has been used to study the characteristics of the bremsstrahlung x-rays generated from the interaction of circulating electrons with the residual gas in accelerator storage rings. Gas bremsstrahlung dose rates are given for various opening angles as a function of the electron beam energy ranging from 0.5--10 GeV. Photon and neutron dose rates, generated from various devices struck by gas bremsstrahlung in a synchrotron radiation beamline, are also presented along with the photon spectral and transmission results. The EGS4-predicted results are found to be in basic agreement with the measurements made at the Stanford Synchrotron Radiation Laboratory. Figures, equations, and a simple method useful for the photon-neutron shielding design for beamlines are provided.
Download or read book A Calculation of Electron bremsstrahlung Produced in Thick Targets written by Chris Gross and published by . This book was released on 1968 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thick target Bremsstrahlung from Electrons with an Energy Spectrum and an Angular Distribution written by Gilberto Ialongo and published by . This book was released on 1969 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: A formula for the bremsstrahlung radiation cross section from thick targets has been derived for monoenergetic electrons impinging normally on the absorber and has been extended to the case where electrons are allowed to have an energy spectrum and an angular distribution. The basic theory makes use of the Bethe-Heitler formula for thin targets and includes corrections for the absorption and buildup of photons, electron penetration in the target including multiple electron scattering, electron backscattering out of the target, electron energy loss in the target, and electron - electron bremsstrahlung. (Author).
Download or read book The Essential Physics of Medical Imaging written by Jerold T. Bushberg and published by Lippincott Williams & Wilkins. This book was released on 2020-11-24 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Widely regarded as the cornerstone text in the field, the successful series of editions continues to follow the tradition of a clear and comprehensive presentation of the physical principles and operational aspects of medical imaging. The Essential Physics of Medical Imaging, 4th Edition, is a coherent and thorough compendium of the fundamental principles of the physics, radiation protection, and radiation biology that underlie the practice and profession of medical imaging. Distinguished scientists and educators from the University of California, Davis, provide up-to-date, readable information on the production, characteristics, and interactions of non-ionizing and ionizing radiation, magnetic fields and ultrasound used in medical imaging and the imaging modalities in which they are used, including radiography, mammography, fluoroscopy, computed tomography, magnetic resonance, ultrasound, and nuclear medicine. This vibrant, full-color text is enhanced by more than 1,000 images, charts, and graphs, including hundreds of new illustrations. This text is a must-have resource for medical imaging professionals, radiology residents who are preparing for Core Exams, and teachers and students in medical physics and biomedical engineering.
Download or read book Results of Some Recent Transport Calculations for Electrons and Bremsstrahlung written by M. J. Berger and published by . This book was released on 1964 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Illustrative results are given for three types of problems: (1) the transmission of electrons through thin and thick foils, with emphasis on the effect of energy loss straggling; (2) the energy dissipation by electrons in a semi-infinite water phantom, for an incident broad beam (depth dose distribution) and for an incident pencil beam (distribution as function of two spatial variables); and (3) the production of bremsstrahlung in thick targets. The data presented for the first two problems are entirely theoretical and result from a Monte Carlo calculation. Similar calculations for the third problem are compared with recent experiments. (Author).
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 1286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1972 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bremsstrahlung Calculations written by L. D. Cohen and published by . This book was released on 1963 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bremsstrahlung production by energetic electrons stopping in a typical thick space vehicle wall has been calculated. Two incident electron energies were considered, 6 Mev and 4 Mev. The spectrum of emergent X-rays from behind the shield attenuation factor was calculated and compared with an experimental determination of the attenuation with essentially the same shield. The calculation and experiment agree to within a factor of about two or three. These results indicate that bremsstrahlung production could represent a radiation hazard to manned flight of some consequence. (Author).
Download or read book Proceedings of the National Symposium on Natural and Manmade Radiation in Space written by E. A. Warman and published by . This book was released on 1972 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improved analysis of electron penetration and numerical procedures for space radiation shielding written by John William Wilson and published by . This book was released on 1977 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
