FREYA-a New Monte Carlo Code for Improved Modeling of Fission Chains

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Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis FREYA-a New Monte Carlo Code for Improved Modeling of Fission Chains by :

Download or read book FREYA-a New Monte Carlo Code for Improved Modeling of Fission Chains written by and published by . This book was released on 2012 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new simulation capability for modeling of individual fission events and chains and the transport of fission products in materials is presented. FREYA (Fission Yield Event Yield Algorithm) is a Monte Carlo code for generating fission events providing correlated kinematic information for prompt neutrons, gammas, and fragments. As a standalone code, FREYA calculates quantities such as multiplicity-energy, angular, and gamma-neutron energy sharing correlations. To study materials with multiplication, shielding effects, and detectors, we have integrated FREYA into the general purpose Monte Carlo code MCNP. This new tool will allow more accurate modeling of detector responses including correlations and the development of SNM detectors with increased sensitivity.

Integration of FREYA Into MCNP6. An Improved Fission Chain Modeling Capability

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Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Integration of FREYA Into MCNP6. An Improved Fission Chain Modeling Capability by :

Download or read book Integration of FREYA Into MCNP6. An Improved Fission Chain Modeling Capability written by and published by . This book was released on 2013 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Treatment of Fission Yield Effects and Method Development for Improved Reactor Depletion Calculations

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731508435
Total Pages : 254 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Advanced Treatment of Fission Yield Effects and Method Development for Improved Reactor Depletion Calculations by : Kern, Kilian

Download or read book Advanced Treatment of Fission Yield Effects and Method Development for Improved Reactor Depletion Calculations written by Kern, Kilian and published by KIT Scientific Publishing. This book was released on 2019-03-01 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Improvements and Applications of the Uniform Fission Site Method in Monte Carlo

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Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (93 download)

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Book Synopsis Improvements and Applications of the Uniform Fission Site Method in Monte Carlo by : Jessica Lynn Hunter

Download or read book Improvements and Applications of the Uniform Fission Site Method in Monte Carlo written by Jessica Lynn Hunter and published by . This book was released on 2014 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monte Carlo methods for reactor analysis have been in development with the eventual goal of full-core analysis. To attain results with reasonable uncertainties, large computational resources are needed. Variance reduction methods have been developed in order to reduce the computational resources required to obtain results in a practical amount of time. This work seeks to expand research in the Uniform Fission Site (UFS) method, a variance reduction technique recently developed that causes uniformity in uncertainty distributions by forcing uniformity in source distributions. This work aims to both improve the method as well as investigate its use with a source acceleration method, Coarse Mesh Finite Difference (CMFD) acceleration. Both techniques have been implemented into OpenMC, a continuous energy Monte Carlo code. The UFS method uses weights to alter the number of neutrons born at a fission site. It operates on a superimposed mesh, in which each mesh cell contains a different weight. These weights use an estimate of the source fraction and fuel volume fraction within the cell to produce uniformity. In current implementations, the fuel volumes are assumed to be dispersed equally over all mesh cells. This work aims to provide an estimate of the fuel volume fraction in each cell in order to improve the accuracy of the method for irregular geometries. The new fuel volume approximation method is tested on a toy problem and on a model of the Advanced Test Reactor, a core with highly irregular geometry. Figures of merit were calculated for a basic Monte Carlo simulation, a simulation with the standard UFS implementation, and the new UFS method with estimated volume fractions. With the toy problem, the new method showed significant improvement and had the highest figure of merit. In the case of the ATR, the long run time for the approximation lowered the figure of merit. Both problems demonstrated that the use of the standard UFS implementation on an irregular geometry produced higher uncertainties than not using the method at all. The UFS method, when used with the estimated volume fractions, behaved as expected and produced uniform uncertainty distributions. The investigation of the use of the UFS method with CMFD acceleration was conducted using the 3-D BEAVRS benchmark. Results showed that keeping CMFD acceleration on during active batches maintained a stationary source and reduced the variance for assembly results. The UFS method stacked on this, reducing the maximum relative uncertainties. The UFS method had variable results with different tallies, but no interference between the two methods was observed.

Compound Nuclear Reactions and Related Topics

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Publisher : American Institute of Physics
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Compound Nuclear Reactions and Related Topics by : American Institute of Physics

Download or read book Compound Nuclear Reactions and Related Topics written by American Institute of Physics and published by American Institute of Physics. This book was released on 2008-05 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: All papers have been peer-reviewed. Compound-nuclear reactions play a crucial role in nuclear astrophysics, nuclear energy, and national security. Although the concept of the compound nucleus dates back to the 1930s, a comprehensive, quantitative description of compound-nuclear reactions remains to be established. CNR* 2007 brought together experts in nuclear theory, experiment, and data evaluation to review current efforts aimed at understanding compound-nuclear reactions and to identify strategies for addressing open questions.

Angular Dependence of Coincidences Between Fission Neutrons

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Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Angular Dependence of Coincidences Between Fission Neutrons by : S. DeBenedetti

Download or read book Angular Dependence of Coincidences Between Fission Neutrons written by S. DeBenedetti and published by . This book was released on 1948 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Reliability and Statistics in Transportation and Communication

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Publisher : Springer
ISBN 13 : 3030124509
Total Pages : 821 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Reliability and Statistics in Transportation and Communication by : Igor Kabashkin

Download or read book Reliability and Statistics in Transportation and Communication written by Igor Kabashkin and published by Springer. This book was released on 2019-03-09 with total page 821 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on cutting-edge theories and methods for analyzing complex systems, such as transportation and communication networks and discusses multi-disciplinary approaches to dependability problems encountered when dealing with complex systems in practice. The book presents the most noteworthy methods and results discussed at the International Conference on Reliability and Statistics in Transportation and Communication (RelStat), which took place in Riga, Latvia on October 17 – 20, 2018. It spans a broad spectrum of topics, from mathematical models and design methodologies, to software engineering, data security and financial issues, as well as practical problems in technical systems, such as transportation and telecommunications, and in engineering education.

Nuclear Power Plant Design and Analysis Codes

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Publisher : Woodhead Publishing
ISBN 13 : 0128181915
Total Pages : 612 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Nuclear Power Plant Design and Analysis Codes by : Jun Wang

Download or read book Nuclear Power Plant Design and Analysis Codes written by Jun Wang and published by Woodhead Publishing. This book was released on 2020-11-10 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear Power Plant Design and Analysis Codes: Development, Validation, and Application presents the latest research on the most widely used nuclear codes and the wealth of successful accomplishments which have been achieved over the past decades by experts in the field. Editors Wang, Li,Allison, and Hohorst and their team of authors provide readers with a comprehensive understanding of nuclear code development and how to apply it to their work and research to make their energy production more flexible, economical, reliable and safe.Written in an accessible and practical way, each chapter considers strengths and limitations, data availability needs, verification and validation methodologies and quality assurance guidelines to develop thorough and robust models and simulation tools both inside and outside a nuclear setting. This book benefits those working in nuclear reactor physics and thermal-hydraulics, as well as those involved in nuclear reactor licensing. It also provides early career researchers with a solid understanding of fundamental knowledge of mainstream nuclear modelling codes, as well as the more experienced engineers seeking advanced information on the best solutions to suit their needs. Captures important research conducted over last few decades by experts and allows new researchers and professionals to learn from the work of their predecessors Presents the most recent updates and developments, including the capabilities, limitations, and future development needs of all codes Incudes applications for each code to ensure readers have complete knowledge to apply to their own setting

Compound-Nuclear Reactions

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Publisher : Springer Nature
ISBN 13 : 3030580822
Total Pages : 312 pages
Book Rating : 4.0/5 (35 download)

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Book Synopsis Compound-Nuclear Reactions by : Jutta Escher

Download or read book Compound-Nuclear Reactions written by Jutta Escher and published by Springer Nature. This book was released on 2021-02-08 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Compound-Nuclear Reaction and Related Topics (CNR*) international workshop series was initiated in 2007 with a meeting near Yosemite National Park. It has since been held in Bordeaux (2009), Prague (2011), Sao Paulo (2013), Tokyo (2015), and Berkeley, California (2018). The workshop series brings together experts in nuclear theory, experiment, data evaluations, and applications, and fosters interactions among these groups. Topics of interest include: nuclear reaction mechanisms, optical model, direct reactions and the compound nucleus, pre-equilibrium reactions, fusion and fission, cross section measurements (direct and indirect methods), Hauser-Feshbach theory (limits and extensions), compound-nuclear decays, particle and gamma emission, level densities, strength functions, nuclear structure for compound-nuclear reactions, nuclear energy, nuclear astrophysics, and other topics. This peer-reviewed proceedings volume presents papers and poster summaries from the 6th International Workshop on Compound-Nuclear Reactions and Related Topics CNR*18, held on September 24-28, 2018, at Lawrence Berkeley National Lab, Berkeley, CA.

The Los Alamos Primer

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ISBN 13 : 0520344170
Total Pages : 163 pages
Book Rating : 4.5/5 (23 download)

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Book Synopsis The Los Alamos Primer by : Robert Serber

Download or read book The Los Alamos Primer written by Robert Serber and published by . This book was released on 2020 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than seventy years ago, American forces exploded the first atomic bombs over the Japanese cities of Hiroshima and Nagasaki, causing great physical and human destruction. The young scientists at Los Alamos who developed the bombs, which were nicknamed Little Boy and Fat Man, were introduced to the basic principles and goals of the project in March 1943, at a crash course in new weapons technology. The lecturer was physicist Robert Serber, J. Robert Oppenheimer's protégé, and the scientists learned that their job was to design and build the world's first atomic bombs. Notes on Serber's lectures were gathered into a mimeographed document titled TheLos Alamos Primer, which was supplied to all incoming scientific staff. The Primer remained classified for decades after the war. Published for the first time in 1992, the Primer offers contemporary readers a better understanding of the origins of nuclear weapons. Serber's preface vividly conveys the mingled excitement, uncertainty, and intensity felt by the Manhattan Project scientists. This edition includes an updated introduction by Pulitzer Prize-winning historian Richard Rhodes. A seminal publication on a turning point in human history, The Los Alamos Primer reveals just how much was known and how terrifyingly much was unknown midway through the Manhattan Project. No other seminar anywhere has had greater historical consequences.

Fashionable Nonsense

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Publisher : Picador
ISBN 13 : 1466862408
Total Pages : 317 pages
Book Rating : 4.4/5 (668 download)

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Book Synopsis Fashionable Nonsense by : Alan Sokal

Download or read book Fashionable Nonsense written by Alan Sokal and published by Picador. This book was released on 2014-01-14 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1996 physicist Alan Sokal published an essay in Social Text--an influential academic journal of cultural studies--touting the deep similarities between quantum gravitational theory and postmodern philosophy. Soon thereafter, the essay was revealed as a brilliant parody, a catalog of nonsense written in the cutting-edge but impenetrable lingo of postmodern theorists. The event sparked a furious debate in academic circles and made the headlines of newspapers in the U.S. and abroad. In Fashionable Nonsense: Postmodern Intellectuals' Abuse of Science, Sokal and his fellow physicist Jean Bricmont expand from where the hoax left off. In a delightfully witty and clear voice, the two thoughtfully and thoroughly dismantle the pseudo-scientific writings of some of the most fashionable French and American intellectuals. More generally, they challenge the widespread notion that scientific theories are mere "narrations" or social constructions.

Challenges for Coolants in Fast Neutron Spectrum Systems

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Publisher :
ISBN 13 : 9789201078209
Total Pages : 268 pages
Book Rating : 4.0/5 (782 download)

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Book Synopsis Challenges for Coolants in Fast Neutron Spectrum Systems by : International Atomic Energy Agency

Download or read book Challenges for Coolants in Fast Neutron Spectrum Systems written by International Atomic Energy Agency and published by . This book was released on 2020-07-30 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication evaluates the different coolant options considered for nuclear applications with a fast neutron spectrum (i.e. fusion, fission and accelerators), compiles the latest information in the field and identifies research needs.

Recent Advances in Redox Active Plant and Microbial Products

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Publisher : Springer
ISBN 13 : 9401789533
Total Pages : 476 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis Recent Advances in Redox Active Plant and Microbial Products by : Claus Jacob

Download or read book Recent Advances in Redox Active Plant and Microbial Products written by Claus Jacob and published by Springer. This book was released on 2014-11-25 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nature endows us with a treasure chest of Green Gold full of amazing ‘redox-active’ substances which interfere with numerous biological processes in our own body, in animals, bacteria, fungi and plants. Whilst such natural products are all around and also in us, we still do not fully understand how these compounds actually work. This book attempts to resolve some of the mysteries and riddles associated with such products. Written by more than thirty international experts from academia and industry, it places a focus on modern developments in this field and considers such natural products from various angles, from their isolation and characterization all along to product development and commercialization. Throughout, the reader will be confronted with modern approaches which enable the efficient identification and isolation of new natural products, help to elucidate their mode(s) of action and permit practical uses in Medicine, Cosmetics, Agriculture, Industry and as functional foods.

Photoneutron Sources

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Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Photoneutron Sources by : B. W. Sargent

Download or read book Photoneutron Sources written by B. W. Sargent and published by . This book was released on 1946 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Nuclear Fission Process

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Publisher : CRC Press
ISBN 13 : 9780849354342
Total Pages : 636 pages
Book Rating : 4.3/5 (543 download)

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Book Synopsis The Nuclear Fission Process by : Cyriel Wagemans

Download or read book The Nuclear Fission Process written by Cyriel Wagemans and published by CRC Press. This book was released on 1991-09-20 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides a comprehensive review of knowledge regarding nuclear fission from both the purely scientific and practical points of view. Topics discussed include fission barriers, spontaneous fission, neutron-induced fission cross-sections, photon- and electron-induced fission, charged particle induced fission fragment angular momentum and ternary fission. The characteristics of other reaction products are also discussed. Contributed articles from several distinguished nuclear scientists guarantee adequate treatment of some of the specialized research fields included in the text. Intended primarily as an introduction to nuclear fission for graduate students, this book will also provide useful information for nuclear physicists involved with research or teaching.

Uller Uprising

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Publisher : e-artnow
ISBN 13 : 8026893522
Total Pages : 145 pages
Book Rating : 4.0/5 (268 download)

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Book Synopsis Uller Uprising by : H. Beam Piper

Download or read book Uller Uprising written by H. Beam Piper and published by e-artnow. This book was released on 2018-05-16 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uller is a corporate world where the natives (silicon humanoids with four arms and a face like a lizard) are ruled by Terro-Human Company. Natives, who outnumber humans, but aren't as advanced, have had it up with the imperialist Company and start a rebellion which will see many dead on both sides.

Critical Assembly

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Publisher : Cambridge University Press
ISBN 13 : 9780521541176
Total Pages : 532 pages
Book Rating : 4.5/5 (411 download)

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Book Synopsis Critical Assembly by : Lillian Hoddeson

Download or read book Critical Assembly written by Lillian Hoddeson and published by Cambridge University Press. This book was released on 2004-02-12 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1993 book explores how the 'critical assembly' of scientists at Los Alamos created the first atomic bombs.