Studies on the Nuclear Interactions of High Energy Protons
Author | : Paul Vincent March |
Publisher | : |
Total Pages | : 101 |
Release | : 1955 |
Genre | : |
ISBN | : |
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Author | : Paul Vincent March |
Publisher | : |
Total Pages | : 101 |
Release | : 1955 |
Genre | : |
ISBN | : |
Author | : Philip John Duke |
Publisher | : |
Total Pages | : |
Release | : 1957 |
Genre | : |
ISBN | : |
Author | : Helge Tyrén |
Publisher | : |
Total Pages | : 22 |
Release | : 1958 |
Genre | : |
ISBN | : |
Author | : Harald Paganetti |
Publisher | : CRC Press |
Total Pages | : 691 |
Release | : 2016-04-19 |
Genre | : Medical |
ISBN | : 1439836450 |
Proton Therapy Physics goes beyond current books on proton therapy to provide an in-depth overview of the physics aspects of this radiation therapy modality, eliminating the need to dig through information scattered in the medical physics literature. After tracing the history of proton therapy, the book summarizes the atomic and nuclear physics background necessary for understanding proton interactions with tissue. It describes the physics of proton accelerators, the parameters of clinical proton beams, and the mechanisms to generate a conformal dose distribution in a patient. The text then covers detector systems and measuring techniques for reference dosimetry, outlines basic quality assurance and commissioning guidelines, and gives examples of Monte Carlo simulations in proton therapy. The book moves on to discussions of treatment planning for single- and multiple-field uniform doses, dose calculation concepts and algorithms, and precision and uncertainties for nonmoving and moving targets. It also examines computerized treatment plan optimization, methods for in vivo dose or beam range verification, the safety of patients and operating personnel, and the biological implications of using protons from a physics perspective. The final chapter illustrates the use of risk models for common tissue complications in treatment optimization. Along with exploring quality assurance issues and biological considerations, this practical guide collects the latest clinical studies on the use of protons in treatment planning and radiation monitoring. Suitable for both newcomers in medical physics and more seasoned specialists in radiation oncology, the book helps readers understand the uncertainties and limitations of precisely shaped dose distribution.
Author | : Jerome Hudis |
Publisher | : |
Total Pages | : 46 |
Release | : 1960 |
Genre | : Nuclear reactions |
ISBN | : |
The literature has been searched for references pertaining to high energy reactions of interest to nuclear chemists. Nuclear Science Abstracts was the main source of references and wherever possible the complete abstract was retained.
Author | : National Academies of Sciences, Engineering, and Medicine |
Publisher | : National Academies Press |
Total Pages | : 153 |
Release | : 2018-10-13 |
Genre | : Science |
ISBN | : 0309478561 |
Understanding of protons and neutrons, or "nucleons"â€"the building blocks of atomic nucleiâ€"has advanced dramatically, both theoretically and experimentally, in the past half century. A central goal of modern nuclear physics is to understand the structure of the proton and neutron directly from the dynamics of their quarks and gluons governed by the theory of their interactions, quantum chromodynamics (QCD), and how nuclear interactions between protons and neutrons emerge from these dynamics. With deeper understanding of the quark-gluon structure of matter, scientists are poised to reach a deeper picture of these building blocks, and atomic nuclei themselves, as collective many-body systems with new emergent behavior. The development of a U.S. domestic electron-ion collider (EIC) facility has the potential to answer questions that are central to completing an understanding of atoms and integral to the agenda of nuclear physics today. This study assesses the merits and significance of the science that could be addressed by an EIC, and its importance to nuclear physics in particular and to the physical sciences in general. It evaluates the significance of the science that would be enabled by the construction of an EIC, its benefits to U.S. leadership in nuclear physics, and the benefits to other fields of science of a U.S.-based EIC.
Author | : Alfred James Morency |
Publisher | : |
Total Pages | : 72 |
Release | : 1955 |
Genre | : |
ISBN | : |
Author | : Laura Elisa Marcucci |
Publisher | : Frontiers Media SA |
Total Pages | : 373 |
Release | : 2021-01-05 |
Genre | : Science |
ISBN | : 2889663485 |
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1976 |
Genre | : |
ISBN | : |
The research conducted during the period 1965 to 1975 was concerned with two areas: (1) high energy proton interactions, and (2) nuclear reactions in nature. The systematics of high energy proton produced rare gas nuclides from Cu, Ag, Au, and U targets were investigated. It was found that the lower mass nuclides up to A approximately 30 were produced mainly by fragment emission, while the higher mass nuclides were produced mainly by spallation except for U targets for which fission dominates. The existence of .beta beta. decay was firmly established for the first time on experimental grounds. The half-life of the .beta beta. decay /sup 130/Te--/sup 130/Xe was measured to be 2.2 x 10/sup 21/ years. The meteorites St. Severin, Lost City, and Suchy Dul were investigated for cosmic ray proton produced rare gases. Cosmic ray exposure ages of 11, 8, and 23 million years respectively were determined. At the same time, the K--Ar ages were found to be 4.4, 4.1, and 1.9 billion years respectively. A model was proposed which allows a tektite strewn field to be at least 100 km from the impact crater. The model removes one of the major constraints on the terrestrial origins of tektites. It was found that /sup 228/Ra diffuses from sea sediments and as such is a good tracer for studying bottom currents and diffusion processes in the sea. A list of publications is included.
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 222 |
Release | : 1999-03-31 |
Genre | : Science |
ISBN | : 0309173663 |
Dramatic progress has been made in all branches of physics since the National Research Council's 1986 decadal survey of the field. The Physics in a New Era series explores these advances and looks ahead to future goals. The series includes assessments of the major subfields and reports on several smaller subfields, and preparation has begun on an overview volume on the unity of physics, its relationships to other fields, and its contributions to national needs. Nuclear Physics is the latest volume of the series. The book describes current activity in understanding nuclear structure and symmetries, the behavior of matter at extreme densities, the role of nuclear physics in astrophysics and cosmology, and the instrumentation and facilities used by the field. It makes recommendations on the resources needed for experimental and theoretical advances in the coming decade.