Pakistani Scientists Invented Laser Technology For Uranium Enrichment. In old times, centrifuge is used which moves uranium for months and month for dstill/enrichment. It was a long time process and also too much expensive. but now Pakistani scientists developed a new way for it which is called laser technology. Old machines are being replaced by this new technology, in next few years Pakistan can easily execute load shedding.
Laser Technology In Detail
laser processes promise lower energy inputs, lower capital costs and lower tails assays, hence significant economic advantages. Several laser processes have been investigated or are under development.
Separation of Isotopes by Laser Excitation (SILEX) is well advanced and licensed for commercial operation in 2012.
Atomic vapor laser isotope separation (AVLIS)
Atomic vapor laser isotope separation employs specially tuned lasers to separate isotopes of uranium using selective ionization of hyperfine transitions.
The technique uses lasers which are tuned to frequencies that ionize 235U atoms and no others. The positively charged 235U ions are then attracted to a negatively charged plate and collected.
Molecular laser isotope separation (MLIS)
Molecular laser isotope separation uses an infrared laser directed at UF6, exciting molecules that contain a 235U atom. A second laser frees a fluorine atom, leaving uranium pentafluoride which then precipitates out of the gas.
The gas centrifuge process uses a large number of rotating cylinders in series and parallel formations.
Each cylinder’s rotation creates a strong centripetal force so that the heavier gas molecules containing 238U move tangentially toward the outside of the cylinder and the lighter gas molecules rich in 235U collect closer to the center.
It requires much less energy to achieve the same separation than the older gaseous diffusion process, which it has largely replaced and so is the current method of choice and is termed second generation.
It has a separation factor per stage of 1.3 relative to gaseous diffusion of 1.005, which translates to about one-fiftieth of the energy requirements. Gas centrifuge techniques produce about 54% of the world’s enriched uranium.