Nuclear Fuel Cycles Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
| Terms for Chapter 1 | Definition |
| Fusion | light nuclei join to form a heavier nuclei |
| Fission | reaction that makes a heavy nucleus split into lighter nuclei |
| Breeding | Process that converts less reactive nuclei into more reactive ones |
| Radioisotopic heating | Using energy from nuclear reactions for heating and electrical generators |
| Four categories of Nuclear fuel | Fusion, Fission, Breeding and Radioisotopic heating |
| most common stellar reaction | Proton Proton process (fusion) |
| Easiest Earth fusion reaction | Deuterium and Tritium (DT) |
| generic fission reaction | n+ X -> L +M +vnf |
| Asymmetric fission | L doesn't equal to M |
| Symmetric fission | L = M |
| three fission fuels | U-235, U-233, Pu-239 |
| Neutron Capture Reaction | a nucleus absorbs one or more neutrons forming a heavier nucleus |
| Most popular radionuclides used as heat sources | Plutonium 238 |
| half life | The time it takes for it to decay to one half of the initial value |
| Beta Particle Decay | Changes a neutron in the parent into a proton and emits an energetic electron. |
| Alpha Particle Decay | emits an alpha particle and the daughter has two less neutrons and two less protons |
| fissile nuclide | nuclei that has a high probability of performing fission |
| fissionable nuclide | any nuclei that can perform fission reactions, no matter how low their probability of it is |
| Nuclide notation A is | Mass number |
| nuclide notation Z is | atomic number |
| Reaction cross section | The area with the largest probability of a reaction to occur |
| Nuclear Binding Energy | Energy required to split a nucleus into its components |
| Binding energy per nucleon | Divide the BE by the sum of all protons and neutrons of the element |
| Reaction Q-value | the amount of energy released (if positive) and absorbed (if negative) of a nuclear reaction |
| Endergonic Reaction | Q<0 endothermic |
| exoergic Reaction | Q>0 exothermic |
| Threshold Energy | The energy that the particle must supply for the reaction to occur |
| Coulombic Barrier | The force that the nucleus and the incident particle (except gamma photon and neutrons) experience due to charge and distance. |
| uranium fuel cycle | the sequence of processes involved in the production of nuclear power, starting with mining of uranium and ending with the final disposition of waste |
| surface mining, open pit mining | large pits are dug intot he surface o the earth to reach the ore body. the least expensive mining method. 200 meters of the surface. 30% of Uranium comes from this |
| underground mining | deeper than 200 meters. involves excavation of passaways. 50% of Uranium comes from this |
| shaft | vertical mine entrancee |
| adit | horizontal mine entrance |
| leach mining, in situ leaching | liquid solvent is injected into the ore to dissolve the uranium. uranium is then pumped out. 20% of Uranium comes from this |
| steps in the uranium fuel cycle | 1. Mining and Milling 2. Conversion 3. Enrichment 4. Fuel fabrication 5.Reactor operation 6.Interim Storage 7.reprocessing 9.immobilization 10.final disposal |
| Milling | 1 Benefication 2. Leaching 3. Purification 4. Precipatation 5. drying |
| Benefication | the treatment of mined material to improve its properties for subsequent processing |
| waste material in an ore | gangue |
| valuable material in an ore | concentrate |
Created by:
1397741063
Popular Engineering sets