Radionuclide production methods using nuclear reactors and accelerators
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Radionuclide production methods using nuclear reactors and accelerators
- 2. Nuclear Reactor Pawitra Masa-at 4937092 SIRS/M February 14, 2007
- 6. Isotope Production Reactor Heat produced in reactor core is removed by cooling fluids and carried to steam generator (in power reactor) Cd or B, which absorb neutrons. They help to regulate the flux of neutrons. Inserted to slow down the neutrons to make them more easily captured. Samples are stable isotope for radionuclide production from neutron capture reaction. U-235 also can be the target of (n,f) reaction for radionuclide production. *water or D2O can be coolant and moderator at the same time.
- 8. Neutron interact with target in reactor n n n n n n n n n n n n Fast neutron Thermal neutron sample
- 10. Fission of U-236
- 11. Fission product of U-236 Example
- 12. Research reactor for radionuclide production
- 13. Fission reaction in fuel core 90 Br 143 Xe
- 17. For production, which is most common, the element does not change, so it is difficult to get carrier-free product. Ex Ex Thermal neutron capture
- 18. Fast neutron capture Ex For (n,p) reaction the number of proton (Z) change, the so the radionuclide is carrier-free product.
- 19. Some radionuclide used in Nuclear medicine
- 20. Calculate Activity of Radionuclide Production t = infinity saturation factor = 1 So …………………………………………………………………………………………………… . activity Half-life
- 26. Neutron Flux density in Reactor graphite *For Neutron source (isotope type) Fuel rod control rod sample
- 27. Calculate Activity of Radionuclide Production For a mass (w) of the element The total number of target nuclei , for isotopic abundance.
- 33. Conclusion -Product atom has same charge -Low specific activity -Short half-life -expensive Disadvantage -Less expensive -Product atom has different charge -High specific activity Advantage -Target bombarded with neutron. -Target bombarded with charged particles (proton, deuteron). Definition of the method Nuclear reactor Accelerators
- 34. Thank You นางสาวปวิตรา หมะสะอะ 4937092 SIRS/M