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    • 1. 发明专利
    • IONIZATION CHAMBER USING ELECTRON SOURCE
    • JP2001068053A
    • 2001-03-16
    • JP2000216270
    • 2000-07-17
    • BRUKER SAXONIA ANALYTIK GMBH
    • DOERING HANS-RUEDIGER
    • G01N27/62G01N23/00G01N23/22G01N27/64H01J49/16
    • PROBLEM TO BE SOLVED: To enhance the ionization rate of an ion molecular reaction necessary in a reaction section chamber by providing a vacuum section chamber, a reaction section chamber, a feeding part of an analyzed object to the reaction section chamber, and a discharging part for discharging the analyzed object, separating the reaction section chamber from the vacuum section chamber by a gas-impermeable partition, and composing a negative electrode of an acceleration passage by disposing a non-emissive electron source in the vacuum section chamber. SOLUTION: In this ionization chamber, by using a positive electrode of an acceleration part as an X-ray anode in the vacuum section chamber or as a surface of the partition in some cases, X-ray light generated by colliding electrons reaches the partition in the direction of the reaction section chamber, the partition is substantially impermeable for an electron having kinetic energy provided by an acceleration voltage, but is permeable for the X-ray light generated from the X-ray anode, and one or more electrodes each used as a surface of the partition in some cases in the reaction section chamber generate photoelectrons from the X-ray light passing the partition. Preferably, the partition is formed of beryllium, having a thickness of 10-200 μm. The ionization chamber has a high ionization rate and a long service life.
    • 5. 发明申请
    • METHOD AND DEVICE FOR DETECTING SUBSTANCES IN AN AMBIENT SUBSTANCE, IN PARTICULAR FOR DETECTING CHEMICAL WARFARE AGENTS
    • 用于检测环境物质中的物质的方法和装置,特别是用于检测化学战剂
    • WO1992018859A1
    • 1992-10-29
    • PCT/DE1991000295
    • 1991-04-09
    • BRUKER-SAXONIA ANALYTIK GMBHDÖRING, Hans-RüdigerHARTMANN, Eberhard
    • BRUKER-SAXONIA ANALYTIK GMBH
    • G01N27/66
    • G01N27/66
    • The invention concerns a method and a device for detecting substances (A, B) in an ambient substance, in particular for detecting chemical warfare agents in the ambient air. First, light reaction ions (02 , H with H2O clusters) are generated in a reaction substance (ambient air, H2O) and added to the mixture of substance (A, B) and ambient substance. Reaction ions (O2 , H with H2O clusters) are deposited in a measurement chamber (10) in a spatially non-uniform distribution of heavy molecules (MA, MB) of the substance (A, B) to form quasi-molecule ions (MA , MB ). A time-variant electric field of predetermined basic frequency and predetermined amplitude which alternates about a zero line is generated in the measurement chamber (10). The quasi-molecule ion stream established due to the electric field is measured and the measurement signal evaluated. To distinguish a first substance (A) from a second substance (B) present at the same time in the ambient substance, a preliminary test is first carried out for a particular measurement chamber (10) to determine the dependence of the quasi-molecule ion stream on the basic frequency, and both the amplitude and asymmetry of the variation with time of the electric field strength about the zero line are separately derived for the first (A) and for the second (B) substance. A first measurement is then carried out on the mixture (32) at a first asymmetry, followed by a second measurement on the mixture (32) at a second asymmetry. The measurement signals of the two measurements are logically combined.
    • 本发明涉及用于检测环境物质中物质(A,B)的方法和装置,特别是用于检测环境空气中的化学战剂。 首先,在反应物质(环境空气,H 2 O)中产生轻反应离子(O 2 - ,H +与H 2 O簇),并加入到物质(A,B)和环境物质的混合物中。 在物质(A,B)的重分子(MA,MB)的空间不均匀分布中,在测量室(10)中沉积反应离子(O 2,H +与H 2 O 3簇) 准分子离子(MA +,MB +)。 在测量室(10)中产生预定基本频率和预定幅度的在零线上交替的时变电场。 测量由于电场而建立的准分子离子流并评估测量信号。 为了区分第一物质(A)和环境物质中同时存在的第二物质(B),首先对特定的测量室(10)进行初步测试,以确定准分子离子的依赖性 基本频率上的流,并且对于第一(A)和第二(B)物质分别导出关于零线的电场强度随时间的变化的幅度和不对称性两者。 然后以第一不对称性对混合物(32)进行第一测量,然后在第二不对称性下对混合物(32)进行第二次测量。 两个测量的测量信号被逻辑组合。