Apparatus for doping a semiconductor crystalline rod
    2.
    发明授权
    Apparatus for doping a semiconductor crystalline rod 失效
    用于掺杂半导体结晶棒的装置

    公开(公告)号:US4048508A

    公开(公告)日:1977-09-13

    申请号:US603680

    申请日:1975-08-11

    CPC分类号: G21K1/00 C30B31/20 G21K5/08

    摘要: An apparatus for doping a semiconductor crystalline rod by nuclear or radiogenic reactions comprised of a hollow irradiation housing having axially and rotatably movable rod support means within the chamber thereof and a neutron conductive sleeve connected with the housing and providing communication between a neutron source and the housing chamber. Accurate and controlled doping of a semiconductor crystalline rod mounted on the rod support means within the housing chamber occurs via controlled rod movement in relation to the neutron source.

    摘要翻译: 一种用于通过核或放射反应掺杂半导体晶体棒的装置,包括在其室内具有轴向和可旋转地移动的杆支撑装置的中空辐射壳体和与壳体连接并提供中子源和壳体之间的连通的中子导电套筒 房间。 安装在壳体室内的杆支撑装置上的半导体晶体棒的精确和受控的掺杂通过相对于中子源的受控棒移动发生。

    Method for the production of n-doped silicon with a dish-shaped profile
of specific resistance in a radial direction
    5.
    发明授权
    Method for the production of n-doped silicon with a dish-shaped profile of specific resistance in a radial direction 失效
    用于制造具有径向电阻率的碟形轮廓的n掺杂硅的方法

    公开(公告)号:US4119441A

    公开(公告)日:1978-10-10

    申请号:US731440

    申请日:1976-10-12

    CPC分类号: C30B31/20 Y10S148/165

    摘要: A method is disclosed for the production of n-doped silicon single crystals, each having a dish-shaped specific electrical resistance profile in a radial direction about a central axis of the crystal. A silicon single crystal is exposed to a pattern of radiation with neutrons according to the reaction 30.sub.Si (n,.gamma.) 31.sub.Si .sup..beta.-.fwdarw. 31.sub.P. The neutron radiation causes a weaker doping concentration in marginal regions of the crystals due to the production of fewer phosphorus atoms. Either p-conductive silicon crystals or n-conductive silicon crystals may be utilized as an initial material for exposure to the neutron radiation.

    摘要翻译: 公开了用于生产n掺杂硅单晶的方法,每个n型掺杂的单晶在围绕晶体的中心轴的径向上具有盘形比电阻分布。 根据反应30Si(n,γ)31Siβ→31P,将硅单晶暴露于具有中子的辐射图。 由于产生较少的磷原子,中子辐射在晶体的边缘区域引起较弱的掺杂浓度。 可以使用p导电硅晶体或n导电硅晶体作为暴露于中子辐射的初始材料。

    Method of reprocessing metal parts radioactively contaminated with
uranium
    6.
    发明授权
    Method of reprocessing metal parts radioactively contaminated with uranium 失效
    后处理放射性污染铀的金属部件的方法

    公开(公告)号:US5732366A

    公开(公告)日:1998-03-24

    申请号:US794567

    申请日:1997-02-03

    申请人: Ernst Haas

    发明人: Ernst Haas

    IPC分类号: G21F9/34 G21F9/30 C21F9/00

    CPC分类号: G21F9/305 G21F9/308

    摘要: A method for reprocessing metal parts that are radioactively contaminated with uranium includes smelting the metal parts so that a melt and a slag are formed. U.sub.235 -depleted uranium is admixed with the metal parts and/or the melt and/or the slag. It is contemplated for the U.sub.235 -depleted uranium to be admixed in the form of uranium glass.

    摘要翻译: 用于再处理被铀放射性污染的金属部件的方法包括熔融金属部件,从而形成熔体和炉渣。 U235贫化铀与金属部件和/或熔体和/或炉渣混合。 预计U235贫化铀以铀玻璃的形式混合。

    Waste disposal site, in particular for the ultimate disposal of
radioactive substances
    7.
    发明授权
    Waste disposal site, in particular for the ultimate disposal of radioactive substances 失效
    废物处理场,特别是放射性物质的最终处置

    公开(公告)号:US5198128A

    公开(公告)日:1993-03-30

    申请号:US711367

    申请日:1991-06-05

    IPC分类号: G21F9/34

    CPC分类号: G21F9/34 Y10S55/09

    摘要: A waste disposal site, such as an ultimate disposal site for radioactive substances, includes installed waste having hollow spaces remaining therebetween. Packing material fills the remaining spaces. At least one substance to which gaseous toxic substances such as radioactive gases adhere, is admixed with the packing material.

    摘要翻译: 废物处理场所,如放射性物质的最终处置场所,包括在其间留有中空空间的已安装废物。 包装材料填充剩余的空间。 至少一种气体有毒物质如放射性气体附着的物质与包装材料混合在一起。

    Method for recycling contaminated metal parts
    8.
    发明授权
    Method for recycling contaminated metal parts 失效
    污染金属部件回收方法

    公开(公告)号:US5998689A

    公开(公告)日:1999-12-07

    申请号:US99242

    申请日:1998-06-15

    摘要: A method for recycling metal parts contaminated by radioactive elements, in particular by .alpha.-emitters, includes forming a melt and a slag from the metal parts and then separating the slag from the melt. The radioactive elements are oxidized prior to the formation of the melt and the slag. For that purpose, the contaminated metal parts are exposed to an oxygen-containing atmosphere for a period at a temperature below the melting temperature of the metal parts.

    摘要翻译: 用于回收被放射性元素污染的金属部件的方法,特别是由α-脱硫剂包括从金属部件形成熔体和熔渣,然后从熔体中分离出熔渣。 在形成熔体和熔渣之前,放射性元素被氧化。 为此,将污染的金属部件暴露于低于金属部件的熔融温度的温度下的含氧气氛中。