Japan Atomic Energy Research Institute

Mitsubishi Chemical Industries Limited

Koreyuki Shiba

Takashi Arisawa

Yoichiro Maruyama

Hitoshi Ono

Toshio Niwa

Masaharu Kaneko

Masaaki Kato

Shigeru Yamagishi

Yoshihisa Takahashi

Youji Suzuki

Keiichiro Saito

Sachio Fujine

A method is, herein, disclosed for separating a specific isotope from a mixture of isotopes by first irradiating the isotope mixture with a highly monochromatic laser light that resonates only with the energy level of the specific isotope so as to increase its chemical activity and then bombarding said specific isotope with a molecule containing highly reactive atoms so as to form a spatially separated compound rich in the specific isotope.

Method of separating isotopes

There is herein, disclosed a dye laser including a container for a dye solution and a pumping energy source coupled thereto, said dye solution containing a perimidone dye formula (I): ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group, a trifluoromethyl group, an alkoxycarbonyl group, an alkoxycarbonylalkyl group, an aralkyl group or a phenyl group; R.sup.2 is an optionally substituted alkoxycarbonyl group, a cyclohexyloxycarbonyl group, tetrahydrofurfuryloxycarbonyl group, an aryloxycarbonyl group, a benzyloxycarbonyl group, an acyl group, a cyano group or an optionally substituted carbamoyl group; R.sup.3 and R.sup.4 which may be the same or different are each a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aralkyl group or an aryl group.

Dye laser

A process and an apparatus are, herein, disclosed for producing microspheres of fissile and/or fertile materials with a high degree of sphericity from a feed solution starter containing at least one metal salt selected from among thorium, uranium and plutonium by using as a gelling medium an organic solvent that has a higher density and a greater interfacial tension with water than the feed solution and which is capable of dissolving ammonia.

Process and apparatus for producing microspheres of fissile and/or

A method of lithium isotope separation by using a cryptand resin as an adsorbent is herein disclosed.

Method of lithium isotope separation

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Ibaraki, Japan

Koreyuki Shiba