Halide-based scintillator nanomaterial
    1.
    发明授权
    Halide-based scintillator nanomaterial 有权
    卤化物闪烁体纳米材料

    公开(公告)号:US08431041B2

    公开(公告)日:2013-04-30

    申请号:US12386503

    申请日:2009-04-17

    IPC分类号: C09K11/08 C09K11/61

    摘要: Scintillator material comprising nanoparticles (nanocrystals) comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) wherein the nanoparticles exhibit room-temperature scintillation under gamma irradiation. The scintillator nanoparticles can comprise Pb3O2I2. The scintillator nanoparticles can comprise PbIOH in generally equiatomic proportions or non-equiatomic variants thereof that exhibit scintillation under gamma irradiation. The scintillator nanoparticles have a particle dimension in the range of about 5 to about 100 nm. Microparticles (microcrystals) also are provided comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) grown in a nanoparticle colloidal solution over time to a particle dimension greater than 0.1 μm, such as about 2 microns. A heterogeneous scintillator material is provided comprising core/shell nanoparticles having a highly hygroscopic or deliquescent halide-based core activated with trivalent Ln3+ or divalent Ln2+ lanthanide ions (Ln=La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and a stable non-hygroscopic shell thereon. The heterogeneous nanoparticles can comprise highly hygroscopic lanthanide halide (LaBr3, LuI3) cores protected with stable non-hygroscopic LaF3 shells. The heterogeneous nanoparticles can comprise deliquescent alkaline earth halide (SrI2, BaI2) cores protected with stable non-hygroscopic (SrF2, BaF2) shells.

    摘要翻译: 包含包含铅(Pb),碘(I)和任选的氧(O)和氢(H)中的一种或两者的纳米颗粒(纳米晶体)的闪烁体材料,其中纳米颗粒在γ照射下呈现室温闪烁。 闪烁体纳米颗粒可以包含Pb 3 O 2 I 2。 闪烁体纳米颗粒可以包含通常等原子比例的PbIOH或在γ照射下显示闪烁的非等摩尔变体。 闪烁体纳米颗粒具有在约5至约100nm范围内的粒子尺寸。 还提供包含铅(Pb),碘(I)以及任选的在纳米颗粒胶体溶液中生长的氧(O)和氢(H)中的一种或两种随时间变化至大于0.1μm的颗粒尺寸的微颗粒(微晶) 例如约2微米。 提供了一种异质闪烁体材料,其包括具有由三价Ln3 +或二价Ln2 +镧系元素离子(Ln = La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb)活化的高吸湿性或潮解性卤化物基核心的核/壳纳米颗粒 ,Dy,Ho,Er,Tm,Yb,Lu)和稳定的非吸湿性外壳。 非均相纳米颗粒可以包含用稳定的非吸湿性LaF 3壳保护的高吸湿性镧系元素卤化物(LaBr 3,LuI 3)。 非均相纳米颗粒可以包含用稳定的非吸湿性(SrF 2,BaF 2)壳保护的潮解性碱土卤​​化物(SrI 2,BaI 2)。

    NANOCRYSTALLINE OPTICALLY-BASED NEUTRON IRRADIATION HISTORY SENSOR
    3.
    发明申请
    NANOCRYSTALLINE OPTICALLY-BASED NEUTRON IRRADIATION HISTORY SENSOR 有权
    基于光学的纳米晶体中子辐照历史传感器

    公开(公告)号:US20140061487A1

    公开(公告)日:2014-03-06

    申请号:US13385457

    申请日:2012-02-21

    IPC分类号: G01T3/08

    CPC分类号: G01T3/00

    摘要: A neutron irradiation history sensor and detection method for detection of thermal neutrons exploit transmutation of 164Dy into 165Ho and 166Er and significant differences in optical properties of Dy, Ho, and Er in order to enable detection of relative fractions of Dy, Ho, and Er and thus the degree and timing of prior thermal neutron exposure that has occurred, providing a tamper-proof forensic record of the prior thermal neutron exposure. The irradiation history sensor and detection method advantageously employ Dy-containing nanocrytals (NCs) residing in a transparent host.

    摘要翻译: 用于探测热中子的中子辐射历史传感器和检测方法利用164Dy的转变为165Ho和166Er,并且Dy,Ho和Er的光学性质有显着差异,以便能够检测Dy,Ho和Er的相对分数, 因此已经发生了先前的热中子暴露的程度和时间,提供了先前的热中子暴露的防篡改取证记录。 照射历史传感器和检测方法有利地使用驻留在透明主体中的含Dy纳米颗粒(NC)。

    Lead-iodide-based scintillator materials
    4.
    发明申请
    Lead-iodide-based scintillator materials 审中-公开
    基于碘化铅的闪烁体材料

    公开(公告)号:US20100072374A1

    公开(公告)日:2010-03-25

    申请号:US12383953

    申请日:2009-03-30

    IPC分类号: G01T1/20 C01B11/22

    摘要: Scintillator material comprising nanoparticles (nanocrystals) comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) wherein the nanoparticles exhibit room-temperature scintillation under gamma irradiation. The scintillator nanoparticles can comprise Pb3O2I2. The scintillator nanoparticles can comprise PbIOH in generally equiatomic proportions or non-equiatomic variants thereof that exhibit scintillation under gamma irradiation. The scintillator nanoparticles have a particle dimension in the range of about 5 to about 100 nm. Microparticles (microcrystals) also are provided comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) grown in a nanoparticle colloidal solution over time to a particle dimension greater than 0.1 μm, such as about 2 microns.

    摘要翻译: 包含包含铅(Pb),碘(I)和任选的氧(O)和氢(H)中的一种或两者的纳米颗粒(纳米晶体)的闪烁体材料,其中纳米颗粒在γ照射下呈现室温闪烁。 闪烁体纳米颗粒可以包含Pb 3 O 2 I 2。 闪烁体纳米颗粒可以包含通常等原子比例的PbIOH或在γ照射下显示闪烁的非等摩尔变体。 闪烁体纳米颗粒具有在约5至约100nm范围内的粒子尺寸。 还提供包含铅(Pb),碘(I)以及任选的在纳米颗粒胶体溶液中生长的氧(O)和氢(H)中的一种或两种随时间推移至微米尺寸大于0.1μm的微粒(微晶) 例如约2微米。

    Halide-based scintillator nanomaterial
    6.
    发明申请
    Halide-based scintillator nanomaterial 有权
    卤化物闪烁体纳米材料

    公开(公告)号:US20100001209A1

    公开(公告)日:2010-01-07

    申请号:US12386503

    申请日:2009-04-17

    IPC分类号: G01J1/58 C09K11/61

    摘要: Scintillator material comprising nanoparticles (nanocrystals) comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) wherein the nanoparticles exhibit room-temperature scintillation under gamma irradiation. The scintillator nanoparticles can comprise Pb3O2I2. The scintillator nanoparticles can comprise PbIOH in generally equiatomic proportions or non-equiatomic variants thereof that exhibit scintillation under gamma irradiation. The scintillator nanoparticles have a particle dimension in the range of about 5 to about 100 nm. Microparticles (microcrystals) also are provided comprising lead (Pb), iodine (I), and optionally one or both of oxygen (O) and hydrogen (H) grown in a nanoparticle colloidal solution over time to a particle dimension greater than 0.1 μm, such as about 2 microns. A heterogeneous scintillator material is provided comprising core/shell nanoparticles having a highly hygroscopic or deliquescent halide-based core activated with trivalent Ln3+ or divalent Ln2+ lanthanide ions (Ln=La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and a stable non-hygroscopic shell thereon. The heterogeneous nanoparticles can comprise highly hygroscopic lanthanide halide (LaBr3, LuI3) cores protected with stable non-hygroscopic LaF3 shells. The heterogeneous nanoparticles can comprise deliquescent alkaline earth halide (SrI2, BaI2) cores protected with stable non-hygroscopic (SrF2, BaF2) shells.

    摘要翻译: 包含包含铅(Pb),碘(I)和任选的氧(O)和氢(H)中的一种或两者的纳米颗粒(纳米晶体)的闪烁体材料,其中纳米颗粒在γ照射下呈现室温闪烁。 闪烁体纳米颗粒可以包含Pb 3 O 2 I 2。 闪烁体纳米颗粒可以包含通常等原子比例的PbIOH或在γ照射下显示闪烁的非等摩尔变体。 闪烁体纳米颗粒具有在约5至约100nm范围内的粒子尺寸。 还提供包含铅(Pb),碘(I)以及任选的在纳米颗粒胶体溶液中生长的氧(O)和氢(H)中的一种或两种随时间变化至大于0.1μm的颗粒尺寸的微颗粒(微晶) 例如约2微米。 提供了一种异质闪烁体材料,其包括具有由三价Ln3 +或二价Ln2 +镧系元素离子(Ln = La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb)活化的高吸湿性或潮解性卤化物基核心的核/壳纳米颗粒 ,Dy,Ho,Er,Tm,Yb,Lu)和稳定的非吸湿性外壳。 非均相纳米颗粒可以包含用稳定的非吸湿性LaF 3壳保护的高吸湿性镧系元素卤化物(LaBr 3,LuI 3)。 非均相纳米颗粒可以包含用稳定的非吸湿性(SrF 2,BaF 2)壳保护的潮解性碱土卤​​化物(SrI 2,BaI 2)。

    Nanocrystalline optically-based neutron irradiation history sensor
    9.
    发明授权
    Nanocrystalline optically-based neutron irradiation history sensor 有权
    纳米晶体光子中子辐射历史传感器

    公开(公告)号:US08680469B1

    公开(公告)日:2014-03-25

    申请号:US13385457

    申请日:2012-02-21

    IPC分类号: G01T3/08

    CPC分类号: G01T3/00

    摘要: A neutron irradiation history sensor and detection method for detection of thermal neutrons exploit transmutation of 164Dy into 165Ho and 166Er and significant differences in optical properties of Dy, Ho, and Er in order to enable detection of relative fractions of Dy, Ho, and Er and thus the degree and timing of prior thermal neutron exposure that has occurred, providing a tamper-proof forensic record of the prior thermal neutron exposure. The irradiation history sensor and detection method advantageously employ Dy-containing nanocrytals (NCs) residing in a transparent host.

    摘要翻译: 用于探测热中子的中子辐射历史传感器和检测方法利用164Dy的转变为165Ho和166Er,并且Dy,Ho和Er的光学性质有显着差异,以便能够检测Dy,Ho和Er的相对分数, 因此已经发生了先前的热中子暴露的程度和时间,提供了先前的热中子暴露的防篡改取证记录。 照射历史传感器和检测方法有利地使用驻留在透明主体中的含Dy纳米颗粒(NC)。