Nonintrusive method for the detection of concealed special nuclear material
    2.
    发明申请
    Nonintrusive method for the detection of concealed special nuclear material 有权
    非侵入性检测隐蔽特殊核材料的方法

    公开(公告)号:US20050220247A1

    公开(公告)日:2005-10-06

    申请号:US10818848

    申请日:2004-04-06

    IPC分类号: G21G1/06

    CPC分类号: G01V5/0091

    摘要: A method and associated apparatus for detecting concealed fissile, fissionable or special nuclear material in an article, such as a shipping container, is provided. The article is irradiated with a source of fast neutrons, and fast neutrons released by the fissile or fissionable material, if present, are detected between source neutron pulses. The method uses a neutron detector that can detect and discriminate fast neutrons in the presence of thermal neutrons and gamma radiation. The detector is able to process high count rates and is resistant to radiation damage, and is preferably a solid state neutron detector comprised of silicon carbide.

    摘要翻译: 提供了用于检测物品(例如运输容器)中的隐形裂变,可裂变或特殊核材料的方法和相关装置。 用快中子源照射物品,在源中子脉冲之间检测由易裂变材料或可裂变材料释放的快中子(如果有的话)。 该方法使用中子探测器,可以在存在热中子和γ辐射的情况下检测和区分快中子。 检测器能够处理高计数率并且耐辐射损伤,并且优选是由碳化硅组成的固态中子检测器。

    USE OF ISOTOPICALLY ENRICHED NITROGEN IN ACTINIDE FUEL IN NUCLEAR REACTORS
    3.
    发明申请
    USE OF ISOTOPICALLY ENRICHED NITROGEN IN ACTINIDE FUEL IN NUCLEAR REACTORS 审中-公开
    在核反应堆中在等离子体燃料中使用同位素氮

    公开(公告)号:US20100166133A1

    公开(公告)日:2010-07-01

    申请号:US11760179

    申请日:2007-06-08

    摘要: The present invention provides a nuclear fuel comprising an actinide nitride such as 233U, 234U, 235U, 236U, 238U, 232Th, 239Pu, 240Pu, 241Pu, 242Pu, 244Pu, 239Np, 239Am, 240Am, 241Am, 242Am, 243Am, 244Am, 245Am, 240Cm, 241Cm, 242Cm, 243Cm, 244Cm, 245Cm, 246Cm, 247Cm, 248Cm, 249Cm, 259Cm, 245Bk, 246Bk, 247Bk, 248Bk, 249Bk, 250Bk, 248Cf, 249Cf, 250Cf, 251Cf, 252Cf, 253Cf, 254Cf, 255Cf, 249Es, 250Es, 251Es, 252Es, 253Es, 254Es, 255Es, 251Fm, 252Fm, 253Fm, 254Fm, 255Fm, 256Fm, 257Fm, 255Md, 256Md, 257Md, 258Md, 259Md, 260Md, 253No, 254No, 255No, 256No, 257No, 258No and 259No, and optionally fission products such as 97Tc, 98Tc and 99Tc, suitable for use in nuclear reactors, including those based substantially on thermal fission, such as light and heavy water reactors, gas-cooled nuclear reactors, liquid metal fast breeders or molten salt fast breeders. The fuel contains nitrogen which has been isotopically enriched to at least about 50% 15N, most preferably above 95%.

    摘要翻译: 本发明提供一种包含锕系氮化物的核燃料,例如233U,234U,235U,236U,238U,232Th,239Pu,240Pu,241Pu,242Pu,244Pu,239Np,239Am,240Am,241Am,242Am,243Am,244Am,245Am ,240Cm,241Cm,242Cm,243Cm,244Cm,245Cm,246Cm,247Cm,248Cm,249Cm,259Cm,245Bk,246Bk,247Bk,248Bk,249Bk,250Bk,248Cf,249Cf,250Cf,251Cf,252Cf,253Cf,254Cf,255Cf ,249E,250E,251E,252E,253E,254Fm,253Fm,254Fm,255Fm,256Fm,257Fm,255Md,256Md,257Md,258Md,259Md,260Md,253No,254No,255No,256No, ,258No和259No,以及任选的适合用于核反应堆(包括基于热裂变基础的那些)的核反应堆的97Tc,98Tc和99Tc裂变产物,例如轻水和重水反应堆,气冷核反应堆,液态金属快速育种 或熔盐快速育种者。 燃料含有同位素富集至少约50%15N,最优选高于95%的氮气。

    Nonintrusive method for the detection of concealed special nuclear material
    4.
    发明授权
    Nonintrusive method for the detection of concealed special nuclear material 有权
    非侵入性检测隐蔽特殊核材料的方法

    公开(公告)号:US07151815B2

    公开(公告)日:2006-12-19

    申请号:US10818848

    申请日:2004-04-06

    IPC分类号: G21G1/06

    CPC分类号: G01V5/0091

    摘要: A method and associated apparatus for detecting concealed fissile, fissionable or special nuclear material in an article, such as a shipping container, is provided. The article is irradiated with a source of fast neutrons, and fast neutrons released by the fissile or fissionable material, if present, are detected between source neutron pulses. The method uses a neutron detector that can detect and discriminate fast neutrons in the presence of thermal neutrons and gamma radiation. The detector is able to process high count rates and is resistant to radiation damage, and is preferably a solid state neutron detector comprised of silicon carbide.

    摘要翻译: 提供了用于检测物品(例如运输容器)中的隐形裂变,可裂变或特殊核材料的方法和相关装置。 用快中子源照射物品,在源中子脉冲之间检测由易裂变材料或可裂变材料释放的快中子(如果有的话)。 该方法使用中子探测器,可以在存在热中子和γ辐射的情况下检测和区分快中子。 检测器能够处理高计数率并且耐辐射损伤,并且优选是由碳化硅组成的固态中子检测器。

    Use of isotopically enriched actinide fuel in nuclear reactors
    5.
    发明申请
    Use of isotopically enriched actinide fuel in nuclear reactors 审中-公开
    在核反应堆中使用同位素富集的锕系燃料

    公开(公告)号:US20060251206A1

    公开(公告)日:2006-11-09

    申请号:US11352789

    申请日:2006-02-13

    IPC分类号: G21C3/00

    CPC分类号: G21C3/62 Y02E30/33 Y02E30/38

    摘要: The present invention provides a nuclear fuel rod, assembly comprising an actinide nitride such as uranium nitride, suitable for use in nuclear reactors, including those based substantially on thermal fission, such as light and heavy water or gas-cooled nuclear reactors. The fuel contains nitrogen which has been isotopically enriched to at least about 50% 15N, most preferably above 95%. The fuel can be in the form of particles, pellets, in annular form or other forms having high surface to volume ratios.

    摘要翻译: 本发明提供了一种核燃料棒,其组合包括适用于核反应堆的锕系氮化物,例如氮化铀,其包括基本上基于热裂变的那些,例如轻质和重水或气体冷却的核反应堆。 燃料含有同位素富集至少约50%,最优选高于95%的氮气。 燃料可以是具有高表面与体积比的环状或其它形式的颗粒,颗粒。