Browse Prior Art Database

Isotope Separation using Laser Light

IP.com Disclosure Number: IPCOM000083314D
Original Publication Date: 1975-Apr-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Hodgson, RT: AUTHOR [+2]

Abstract

A system has been suggested for separating the isotope uranium U235 from a gaseous uranium compound having naturally abundant isotopic percentages; 99.7% U238 and 0.3% U235. The system relies upon a stimulated Raman scattering process in conjunction with a photoselective process.

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Isotope Separation using Laser Light

A system has been suggested for separating the isotope uranium U235 from a gaseous uranium compound having naturally abundant isotopic percentages;
99.7% U238 and 0.3% U235. The system relies upon a stimulated Raman scattering process in conjunction with a photoselective process.

It is known use an infrared emitting laser can be used to excite the ground state of one of two molecular species, i.e., isotopes, whereby only one of the species is excited to a level where photoionization techniques can be used to separate and collect the selected isotope. However, to achieve such selective excitation, a very powerful, highly tuned infrared laser is needed. Such a laser is not readily available.

The suggested system, shown in Fig. 1, achieves such isotopic separation using conventional, readily available lasers. Fig. 2 is an energy diagram for assisting in the understanding of the isotopic separating combination of Fig. 1. A ruby laser 2 emits radiation at a frequency upsilon(L). The latter radiation enters a transparent cell 4 that contains the gas uranium hexafluoride (UF(6)), that has been synthesized from predominantly U235 ore that has been previously processed.

The ruby laser radiation generates stimulated Raman emission at a frequency upsilon(S) in the UF(6) at high pressure. Two beams at frequencies upsilon(L) and upsilon(S) exit from cell 4 and impinge on transparent cell 6 that contains unprocessed UF(6) at low pressure. T...