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公开(公告)号：US4045526A
公开(公告)日：1977-08-30
申请号：US559298
申请日：1975-03-17
CPC分类号： G21C21/02 , Y10S376/901
摘要： A process for the preparation of graphite-clad nuclear fuel rods comprising coating fine particles of a nuclear fuel such as uranium oxide or thorium oxide with a matrix material containing graphite powder and a binder to form matrix material-coated globules, charging the thus-formed globules, without or after being pre-molded into a green rod-like fuel compact, into the rubber mold of a rubber press molding machine, charging a similar matrix material in the gap between the globules or rod-like fuel compact and the inner wall of the rubber mold, compressing the whole mass in the direction from the side face of the whole mass to the axis thereof to form a green, graphite coat material-coated fuel compact, baking the thus-formed green fuel compact at a temperature of up to 1800.degree. C and, if desired, impregnating the baked product with a resin followed by being rebaked at a temperature of up to 1800.degree. C; and the graphite-clad nuclear fuel rods.
摘要翻译： 一种用于制备包覆石墨的核燃料棒的方法，包括用含有石墨粉末和粘合剂的基体材料涂覆诸如氧化铀或氧化钍的核燃料的细颗粒以形成基体材料涂覆的球，将由此形成 小球，没有或之后被预先模制成绿色棒状燃料压块，进入橡胶压模机的橡胶模具中，在小球或棒状燃料压块之间的间隙中加入类似的基质材料， 的橡胶模具，从整个物料的侧面向其轴线方向压制整个物料，形成绿色的石墨涂层材料涂覆的燃料成型体，在如此形成的绿色燃料压块的温度下烘烤 如果需要，用树脂浸渍烘焙产品，然后在高达1800℃的温度下再加捻; 和石墨包覆的核燃料棒。
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2.发明授权Process for separating an isotope from a mixture of different isotopes by using a single laser beam 失效通过使用单个激光束从不同同位素的混合物中分离同位素的方法
公开(公告)号：US4584072A
公开(公告)日：1986-04-22
申请号：US473131
申请日：1983-03-07
CPC分类号： B01D59/34
摘要： A process is, herein, disclosed for separating a particular isotope from a mixture of different isotopes by selective excitation and ionization of the particular isotope with a single laser beam, said process comprising heating the mixture, converting the resulting atomic vapor to a highly directional atomic beam by suitable means, causing said atomic beam to travel through a vacuum, crossing the atomic beam with a high-intensity laser beam having a specific wavelength, selectively exciting the particular isotope with a first photon having that specific wavelength while the other isotopes remaining in the ground state, allowing the excited isotope to absorb a second photon to be excited to a virtual energy level, causing the so excited isotope to absorb a third photon to ionize said isotope, and recovering the ionized isotope by use of an electric or electromagnetic field.
摘要翻译： 本文公开了一种通过特定同位素与单个激光束的选择性激发和电离来分离特定同位素的混合物的方法，所述方法包括加热混合物，将所得到的原子蒸汽转化成高定向原子 通过合适的方式使所述原子束行进穿过真空，用具有特定波长的高强度激光束穿过原子束，用具有特定波长的第一光子选择性激发特定同位素，而其余同位素保持在 基态，允许激发的同位素吸收要激发到虚拟能级的第二光子，使得如此激发的同位素吸收第三光子以离子化所述同位素，并且通过使用电场或电磁场来回收电离的同位素 。
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