| 摘要 |
<p>A simple system for obtaining high dissociation yield in a single highly selective step, even at very high pumping powers, in the molecular laser isotope separation (MLIS) route of Uranium Hexafluoride (UF6), is described. In order to selectively excite and dissociate the desired isotope 235UF6 two beams with frequencies corresponding to the first and second energy excitation levels of this isotope at φ1 = φ0 and φ2 = φ0+φ12 respectively where φ12 is the frequency difference between the first and second energy excitation levels, are simultaneously applied to the supercooled Uranium Hexafluoride molecular gas. Special arrangements which involve the perpendicular crossing of two sets of such beams derivable from the same set of collinear beams polarized in the same direction, allow for the supercooled gas to be uniformly illuminated in configurations equivalent to a Mach-Zehnder interferometer with the gas substituted for the position of the reuniting beamsplitter further enhancing the selectivity of the desired isotope. The versatility of the method enables it to be applied to any particular molecular gas with closely spaced isotopes.</p> |
