摘要:
A rare-gas hydrogen-halide laser is improved by including or adding a predetermined quantity of a hydrogen donor additive to its gas mixture. The closed-off operation lifetime of lasers such as XeCl, KrCl, or XeBr are tripled by adding up to 0.05% hydrogen to the laser gas mixture.
摘要:
A method of producing carbonyl fluoride by multiphoton decomposition of carbon dioxide-sulphur hexafluoride mixtures comprising irradiating gaseous carbon dioxide-sulphur hexafluoride mixtures in a reaction chamber at a pressure in the 10-50 Torr range with a laser beam at a frequency of about 944 wavenumbers and passing the material from the reaction chamber after irradiation through a chemical processing stage to obtain a carbonyl fluoride product.
摘要:
A method of producing carbon-13 using CF.sub.2 HCl as the feedstock (substrate) material in which the CF.sub.2 HCl is enriched up to a first level of C-13 by I.R. laser photodissociation and then to 90-99% C-13 by a second exchange process. In the preferred arrangement the second stage is a chemical exchange process.
摘要:
A method of upgrading a product containing a minor proportion of pre-vitamin d.sub.2 or pre-vitamin d.sub.3 and a major proportion of tachysterol comprising irradiating the product with laser light in the wavelength range 330-360 nanometers to obtain a product containing approximately 95% pre-vitamin -D.sub.2 or pre-vitamin -D.sub.3, and heating this product to convert the pre-vitamin -D.sub.2 or pre-vitamin -D.sub.3 to vitamin -D.sub.2 or vitamin -D.sub.3.
摘要:
A method of producing carbon--13 by multiphoton decomposition of C.sub.3 F.sub.6, said material containing carbon--12 and carbon--13 isotopic species, comprising irradiating gaseous C.sub.3 F.sub.6 in a reaction chamber at a pressure below 10 Torr with a laser beam at a frequency in the range of 950 to 1020 wavenumbers and providing a minimum fluence of 1 joules per sq. cm. and passing the material through a physical separation stage to obtain a .sup.13 C.sub.2 F.sub.4 product.
摘要翻译:一种通过C3F6的多光子分解生产碳-13的方法,所述材料含有碳-12和碳-13同位素物质,其包括在压力低于10托的反应室中以一定频率的激光束照射气态C 3 F 6 950至1020个波数,并提供1焦耳/平方厘米的最小注量。 并使材料通过物理分离阶段以获得13C2F4产品。