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    • 1. 发明授权
    • Gas mixtures for gas-filled radiation detectors
    • 气体充填辐射探测器的气体混合物
    • US4309307A
    • 1982-01-05
    • US134815
    • 1980-03-28
    • Loucas G. ChristophorouDennis L. McCorkleDavid V. MaxeyJames G. Carter
    • Loucas G. ChristophorouDennis L. McCorkleDavid V. MaxeyJames G. Carter
    • H01J47/00C09K3/00H01J39/28H01J39/30
    • H01J47/005
    • Improved binary and ternary gas mixtures for gas-filled radiation detectors are provided. The components are chosen on the basis of the principle that the first component is one molecular gas or mixture of two molecular gases having a large electron scattering cross section at energies of about 0.5 eV and higher, and the second component is a noble gas having a very small cross section at and below about 1.0 eV, whereby fast electrons in the gaseous mixture are slowed into the energy range of about 0.5 eV where the cross section for the mixture is small and hence the electron mean free path is large. The reduction in both the cross section and the electron energy results in an increase in the drift velocity of the electrons in the gas mixtures over that for the separate components for a range of E/P (pressure-reduced electric field) values. Several gas mixtures are provided that provide faster response in gas-filled detectors for convenient E/P ranges as compared with conventional gas mixtures.
    • 提供了用于气体充满的辐射探测器的改进的二元和三元气体混合物。 基于第一组分是能量约为0.5eV以上的电子散射截面大的两种分子气体或两种分子气体的混合物的原理来选择组分,第二组分是具有 大约1.0eV以下的非常小的横截面,由此气体混合物中的快速电子减慢到约0.5eV的能量范围,其中混合物的横截面小,因此电子平均自由程大。 横截面和电子能量的减少导致气体混合物中的电子的漂移速度与用于E / P(减压电场)值范围的单独部件的漂移速度增加。 提供了几种气体混合物,与常规气体混合物相比,在充满气体的检测器中提供更快的响应,方便E / P范围。
    • 2. 发明授权
    • Gas mixtures for gas-filled particle detectors
    • 用于气体填充颗粒检测器的气体混合物
    • US4201692A
    • 1980-05-06
    • US5263
    • 1979-01-22
    • Loucas G. ChristophorouDennis L. McCorkleDavid V. MaxeyJames G. Carter
    • Loucas G. ChristophorouDennis L. McCorkleDavid V. MaxeyJames G. Carter
    • H01J47/00C09K3/00H01J39/28H01J39/30
    • H01J47/005
    • Improved binary and tertiary gas mixtures for gas-filled particle detectors are provided. The components are chosen on the basis of the principle that the first component is one gas or mixture of two gases having a large electron scattering cross section at energies of about 0.5 eV and higher, and the second component is a gas (Ar) having a very small cross section at and below aout 0.5 eV, whereby fast electrons in the gaseous mixture are slowed into the energy range of about 0.5 eV where the cross section for the mixture is small and hence the electron mean free path is large. The reduction in both the cross section and the electron energy results in an increase in the drift velocity of the electrons in the gas mixtures over that for the separate components for a range of E/P (pressure-reduced electron field) values. Several gas mixtures are provided that provide faster response in gas-filled detectors for convenient E/P ranges as compared with conventional gas mixtures.
    • 提供了用于气体填充颗粒检测器的改进的二元和三次气体混合物。 基于以下原理选择组分:第一组分是一种气体或两种具有大电子散射截面的气体的混合物,其能量为约0.5eV以上,第二组分为具有 在0.5eV以下的非常小的横截面,由此气体混合物中的快速电子减慢到约0.5eV的能量范围,其中混合物的横截面小,因此电子平均自由程大。 横截面和电子能量的减少导致气体混合物中的电子的漂移速度与对于E / P(压力降低的电子场)值范围的单独组分的漂移速度的增加。 提供了几种气体混合物,与常规气体混合物相比,在充满气体的检测器中提供更快的响应,方便E / P范围。