会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Laser mass spectrometer
    • 激光质谱仪
    • US4686366A
    • 1987-08-11
    • US800546
    • 1985-11-21
    • Michael Stuke
    • Michael Stuke
    • G01N21/64H01J49/40B01D59/44
    • H01J49/24G01N21/6402H01J49/40
    • A laser mass spectrometer comprises an electrode system and an ion detector system supported on a mounting flange. The electrode system defines an ionization space, an ion acceleration space and a time-of-flight or separation path. At least some of the electrode of the electrode system are removably mounted on support rods extending an axial or ion path direction, to allow accomodation of the distance between the ionization space and the mounting flange to the configuration of an apparatus or vacuum system with which the mass spectrometer is used. Thus, the distance between the mounting flange and the ionization space may be varied by using separation path of different length. The ionization is effected by laser radiation, which may be coupled in through a window in the mounting flange. To derive additional information about a substance under investigation, means may be provided for coupling out radiation emitted by the ionized substance in the ionization space, and the laser may provide radiation pulses having a length in the order of picoseconds, as 10 ps and less, to avoid fragmentation of larger molecules which would prevent detection of the "parent ion".
    • 激光质谱仪包括电极系统和支撑在安装凸缘上的离子检测器系统。 电极系统限定电离空间,离子加速空间和飞行时间或分离路径。 电极系统的至少一些电极可移除地安装在延伸轴向或离子路径方向的支撑杆上,以允许电离空间和安装凸缘之间的距离适应于设备或真空系统的构造, 使用质谱仪。 因此,可以通过使用不同长度的分离路径来改变安装凸缘与电离空间之间的距离。 电离由激光辐射实现,其可通过安装法兰中的窗口联接。 为了获得关于正在研究的物质的附加信息,可以提供用于耦合在离子化空间中由电离物质发射的辐射的手段,并且激光器可以提供长度为皮秒的10ps以下的辐射脉冲, 以避免大分子的分裂,这将阻止“母离子”的检测。