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
    • 77. 发明授权
    • Generation of an exact three-dimensional quadrupole electric field and
superposition of a homogeneous electric field in trapping-exciting mass
spectrometer (TEMS)
    • 捕获激发质谱仪(TEMS)中产生精确的三维四极电场和均匀电场的叠加
    • US5283436A
    • 1994-02-01
    • US867673
    • 1992-06-30
    • Yang Wang
    • Yang Wang
    • H01J49/42B01D59/44H01J49/00
    • H01J49/424H01J49/027
    • An exact three-dimensional rotationally symmetric quadrupole field or an electric field of higher multipole moments can be generated by closed boundaries with continuously varied potential, especially with linearly variable potential, in the ideal case by simple cone-shaped boundaries with linearly variable potential. An example for the application of the field is storage of charged particles inside the closed boundaries. Within the same cone-shaped boundaries, a homogeneous ideal field in the direction of the symmetry axis can be superimposed. This field can be employed for excitation of the kinetic energy, for quenching, or for energy analysis of the stored charged particles. For the generation of mass spectra the mass-to-charge specific fundamental frequencies of the charged particles stored in the electrode structure are excited. The image currents induced in the electrode structure are frequency analysed (e.g. by Fourier transform).
    • PCT No.PCT / EP90 / 00030 Sec。 371日期:1992年6月30日 102(e)日期1992年6月30日PCT 1990年1月8日PCT PCT。 公开号WO91 / 11016 PCT 日期:1991年7月25日。精确的三维旋转对称四极场或较高多极矩的电场可以通过具有连续变化的电位的闭合边界产生,特别是线性可变电位,在理想情况下可以通过简单的锥形 具有线性可变电位的边界。 应用该领域的示例是将带电粒子存储在封闭边界内。 在相同的锥形边界内,可以叠加在对称轴方向上的均匀理想场。 该领域可以用于激发所储存的带电粒子的动能,淬火或能量分析。 为了产生质谱,可以激发存储在电极结构中的带电粒子的质荷比特定基频。 在电极结构中感应的图像电流被频率分析(例如通过傅里叶变换)。