Download or read book WEAPONS RADIATION SHIELDING HANDBOOK CHAPTER 3 METHODS FOR CALCULATING NEUTRON AND GAMMA RAY ATTENUATION written by and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weapons Radiation Shielding Handbook written by Paul N. Stevens and published by . This book was released on 1970 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book WEAPONS RADIATION SHIELDING HANDBOOK CHAPTER 2 BASIC CONCEPTS OF RADIATION SHIELDING ANALYSIS written by and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weapons Radiation Shielding Handbook written by Paul N. Stevens and published by . This book was released on 1971 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Weapons Radiation Shielding Handbook Chapter 3 Methods Calculating Neutron and Gamma Ray Attenuation written by Paul N. Stevens and published by . This book was released on 1971 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculations of the attenuation of neutrons and gamma rays in shields can be performed by several techniques, the best technique for a particular problem depending on the type of problem to be solved and the degree of accuracy required. This chapter of the Handbook surveys the calculational methods used most frequently and provides summaries of digital computer codes based on the various methods. The methods covered are those of spherical harmonics, discrete ordinates, moments, Monte Carlo, diffusion theory, invariant imbedding, and kernels, plus a method which combines a removal kernel with diffusion theory. Except for the invariant imbedding method, all these techniques are either approximate solutions to the well-known Boltzmann equation or are based on kernels obtained from solutions to the equation. A discussion of the Boltzmann equation is also included. (Author).

Download or read book Weapons Radiation Shielding Handbook Chapter 4 Neutron and Gamma ray Albedos written by Wade E. Selph and published by . This book was released on 1967 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air-filled openings through weapons radiation shields (for example, ducts, passageways, etc.) can increase the total amount of radiation penetrating the shield, primarily as a result of radiation successively scattering from the walls of the openings. Most techniques that have been developed for estimating the transmission of radiation through such openings depend on the use of albedos, an albedo being the fraction of radiation incident on a surface that is reflected back out of the material, assuming that the radiation enters and emerges at the same point. This chapter of the Handbook surveys the work performed to date on the various types of nuclear radiation albedos and uses a consistent nomenclature which shows the relationship of the results obtained in the different studies. Since the material considered most often for weapons radiation shields is concrete, most of the albedo data are for this material, although some data have been obtained for other materials, particularly for soils. The data are reported as singly differential albedos (differential with respect to the emergent angle), doubly differential albedos (differential with respect to both the emergent energy and the emergent angle), and total albedos (albedos for which the data have been integrated over both the emergent energy and emergent angle). Three fundamental types of differential and total albedos are used: an albedo which represents an incident flux of particles and an emergent current of particles, an albedo which represents an incident current and an emergent current, and an albedo which represents an incident flux and an emergent flux. These fundamental albedos may be weighted by dose response functions or by energy.

Download or read book Weapons Radiation Shielding Handbook Chapter 3 Methods for Calculating Neutron and Gamma ray Attenuation written by Paul N. Stevens and published by . This book was released on 1968 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculations of the attenuation of neutrons and gamma rays in shields can be performed by several techniques, the best technique for a particular problem depending on the type of problem to be solved and the degree of accuracy required. This chapter of the Handbook surveys the calculational methods used most frequently and provides summaries of digital computer codes based on the various methods. The methods covered are those of spherical harmonics, discrete ordinates, moments, Monte Carlo, diffusion theory, invariant imbedding, and kernels, plus a method which combines a removal kernel with diffusion theory. Except for the invariant imbedding method, all these techniques are either approximate solutions to the well-known Boltzmann equation or are based on kernels obtained from solutions to the equation. A discussion of the Boltzmann equation is also included in the chapter. (Author).

Download or read book WEAPONS RADIATION SHIELDING HANDBOOK CHAPTER 5 METHODS FOR CALCULATING EFFECTS OF DUCTS ACCESS WAYS AND HOLES IN SHIELDS written by and published by . This book was released on 1966 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the shields that are designed to protect military equipment or personnel from weapons radiations will contain air-filled holes of some type. They may consist of access ways to accommodate ventilating ducts or other utility pipes, passageways to allow personnel to enter the structure, or distributed voids resulting from the use of nonhomogeneous material in the structure. Since radiation traverses air-filled regions essentially unimpeded, these irregularities in an otherwise adequate shield can represent a serious problem for the shield designer. The most effective method for reducing the amount of radiation that travels through such openings is to design the ducts or passageways so that they do not penetrate straight through the shield, as, for example, ducts which contain one or more bends.

Download or read book Handbook for Radiological Defense Education written by United States. Office of Civil and Defense Mobilization and published by . This book was released on 1959 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Weapons Free Field Environment Recommended for Initial Radiation Shielding Calculations written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods for Calculating Effects of Ducts Access Ways and Holes in Shields written by Lorraine S. Abbott and published by . This book was released on 1968 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods for Calculating Neutron and Gamma ray Attenuation written by Lorraine S. Abbott and published by . This book was released on 1968 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Handbook for Medical Service Personnel written by United States. Department of the Army and published by . This book was released on 1969 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This manual provides a concise reference on nuclear weapons effects of interest to Army Medical Service personnel. It is intended that this information will assist the officers of the Army Medical Department in the conduct of medical service operations in conditions expected in nuclear warfare."--Introd.

Download or read book Reactor and Weapons Radiation Shielding Bibliography Subject Index and Author Index of the Literature Examined by the Radiation Shielding Information Center written by D. K. Trubey and published by . This book was released on 1969 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Radiation Shielding written by J. Kenneth Shultis and published by Amer Nuclear Society. This book was released on 2000-01-01 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This newly published book is intended for dual use as a textbook for students in radiation shielding courses and a reference work for shielding practitioners. It emphasizes the principles behind techniques used in various aspects of shield analysis and presents these principles in many different contexts. This approach is intended to provide a strong base of understanding in order to facilitate use of the large shielding codes that have come to dominate shielding design and analysis. An assumption is made that the reader has an understanding of mathematics through basic calculus and vector analysis as well as a knowledge of the nuclear physics of radioactive decay. For most chapters, problem sets are provided.

Download or read book Shielding Against Gamma Rays Neutrons and Electrons from Nuclear Weapons written by John Howard Hubbell and published by . This book was released on 1964 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A handbook of radiation shielding data written by John Childs Courtney and published by . This book was released on 1976 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: