Investigation of Plutonium and Uranium Precipitation Behavior with Gadolinium as a Neutron Poison
نویسندگان
چکیده
منابع مشابه
Reactor-Grade and Weapons-Grade Plutonium in Nuclear Explosives
The most common isotope, plutonium-239, is produced when the most common isotope of uranium, uranium-238, absorbs a neutron and then quickly decays to plutonium. It is this plutonium isotope that is most useful in making nuclear weapons, and it is produced in varying quantities in virtually all operating nuclear reactors. As fuel in a reactor is exposed to longer and longer periods of neutron i...
متن کاملZirconia-magnesia inert matrix fuel and waste form: Synthesis, characterization and chemical performance in an advanced fuel cycle
Zirconia-Magnesia Inert Matrix Fuel and Waste Form: Synthesis, Characterization and Chemical Performance in an Advanced Fuel Cycle by Kiel Steven Holliday Dr. Ken Czerwinski, Examination Committee Chair Professor of Chemistry Chair of the Department of Radiochemistry University of Nevada, Las Vegas There is a significant buildup in plutonium stockpiles throughout the world, because of spent nuc...
متن کاملImproved PWR Core Characteristics with Thorium-containing Fuel
Thorium is an element for possible use as nuclear fuel, because of the fertile property of Th-232, which could convert into U-233 after neutron capture and beta decays. However, thorium based fuels have not been successfully implemented, because of the high cost and the higher complexity compared with once-through uranium fuel. Therefore, the focus of this thesis is on thorium for use in tradit...
متن کاملمحاسبات مصرف سوخت و پارامترهای نوترونیک مربوط به رآکتورهای آب سنگین تحقیقاتی با سوخت اورانیوم- توریوم توسط کد MCNPX
One of the main characteristics of heavy water research reactors is their high production of plutonium. This work demonstrates the possibility of reduction of plutonium production and other actinides in heavy water research reactors. Among the many ways for reducing plutonium production in a heavy water reactor, in this research, changing the fuel from natural uranium to thorium-uranium mixed f...
متن کاملNeutron Detection and Counting Introduction
Plutonium and uranium isotopes decay by alpha particle emission. The alpha particle is absorbed by the nuclei of the low atomic number elements (Li, B, Be, O, F, C, Si, etc.) and a neutron is produced. The yield depends upon the chemical composition of the matrix and the alpha production rate for plutonium and uranium. Neutrons from (α,n) reactions are produced randomly (not time-correlated) an...
متن کامل