公开(公告)号：US4902099A

公开(公告)日：1990-02-20

申请号：US285754

申请日：1988-12-16

申请人： Yukio Okamoto ,  Makoto Yasuda ,  Seiichi Murayama ,  Masataka Koga

发明人： Yukio Okamoto ,  Makoto Yasuda ,  Seiichi Murayama ,  Masataka Koga

IPC分类号： H01J49/36 ,  G01N21/73 ,  G01N27/62 ,  H01J27/16 ,  H01J37/08 ,  H01J49/10 ,  H05H1/46

CPC分类号： G01N21/73

摘要： A plasma trace element spectrometer comprises a microwave generator for generating microwave power, a microwave feeder for guiding and transforming the generated microwave power into microwave power of TE.sub.01 mode and supplying the microwave power of TE.sub.01 mode, a plasma producer having, at one end, an introduction port for a carrier gas and a sample and at the other end an opening and being cooperative with the supplied microwave power of TE.sub.01 mode to produce plasma of the carrier gas and sample introduced through the introduction port, and a spectrometer for analyzing constituent elements of the sample by measuring the produced plasma by way of the opening.

摘要翻译： 等离子体微量元素光谱仪包括微波发生器，用于产生微波功率;微波馈线，用于引导和转换所产生的微波功率为TE01模式的微波功率，并提供TE01模式的微波功率;等离子体生产器的一端为 用于载气和样品的引入口，另一端为开口，与TE01模式的所提供的微波功率协调，以产生载气和通过引入口引入的样品的等离子体，以及用于分析 通过开口测量产生的等离子体的样品。

公开(公告)号：US4963735A

公开(公告)日：1990-10-16

申请号：US432895

申请日：1989-11-07

申请人： Yukio Okamoto ,  Tsutomu Komoda ,  Satoshi Shimura ,  Seiichi Murayama ,  Masataka Koga

发明人： Yukio Okamoto ,  Tsutomu Komoda ,  Satoshi Shimura ,  Seiichi Murayama ,  Masataka Koga

IPC分类号： H01J49/10

CPC分类号： H01J49/10

摘要： A plasma source mass spectrometer in which ions in a plasma generated in a high pressure (.ltoreq.1 atm) region are introduced into a low pressure (.ltoreq.10.sup.-5 Torr) region to analysis the ion mass includes a moderate pressure (.gtoreq.10.sup.-3 Torr) region which is provided between the high pressure region and the low pressure region. The plasma generated in the high pressure region is diffused to the moderate pressure region in order to produce a diffused plasma. Ions are extracted from the diffused plasma by an ion extraction electrode having an ion extraction opening. In the vicinity of the ion extraction opening a convex-shaped toward the diffused plasma whereby ion sheath is formed, whereby the ions can be extracted toward the low pressure region with a high efficiency.

摘要翻译： 一种等离子体质谱仪，其中将高压（ / = 10-3Torr）区域，其设置在高压区域和低压区域之间。 在高压区域中产生的等离子体扩散到中等压力区域以产生漫射等离子体。 通过具有离子提取开口的离子提取电极从扩散的等离子体中提取离子。 在离子提取开口附近，向扩散等离子体形成凸状，从而形成离子鞘，能够高效地向低压区域取出离子。

公开(公告)号：US5148021A

公开(公告)日：1992-09-15

申请号：US630554

申请日：1990-12-20

申请人： Yukio Okamoto ,  Satoshi Shimura ,  Konosuke Oishi ,  Masataka Koga ,  Makoto Yasuda ,  Takahashi Iino

发明人： Yukio Okamoto ,  Satoshi Shimura ,  Konosuke Oishi ,  Masataka Koga ,  Makoto Yasuda ,  Takahashi Iino

IPC分类号： G01N27/62 ,  H01J49/06 ,  H01J49/12 ,  H01J49/26

CPC分类号： H01J49/06

摘要： A mass spectrometer using a plasma ion source for analyzing an ultra-trace element includes a plasma generation system for generating a plasma including the composition of a sample, an ion beam formation system for extracting ions in the form of a beam from the plasma generating the ions, a mass spectrometry system for performing mass spectrometry of the ion beamn, and an ion detection system for detecting the ions subjected to the mass spectrometry, in which a lens system made up of a cylindrical first electrode, a cylindrical second electrode with a photon stopper disposed on the central axis thereof, and a cylindrical third electrode is further provided between the ion beam formation system and the mass spectrometry system. By the provision of the lens system, the ions generated in the plasma are transported more efficiently to the side of the mass spectrometry system and by the provision of the photon stopper in the above described position, it is achieved, with a simpler structure, to prevent photons from entering the ion detection system.

摘要翻译： 使用等离子体离子源分析超微量元素的质谱仪包括：等离子体产生系统，用于产生包含样品组成的等离子体;离子束形成系统，用于从等离子体中提取离子的形式， 离子，用于进行离子束的质谱分析的质谱系统和用于检测进行质谱分析的离子的离子检测系统，其中由圆柱形第一电极构成的透镜系统，具有光子的圆柱形第二电极 止动件设置在其中心轴上，并且在离子束形成系统和质谱系统之间还设置有圆柱形的第三电极。 通过设置透镜系统，在等离子体中产生的离子更有效地传输到质谱系统的侧面，并且通过在上述位置提供光子停止器，以更简单的结构实现 防止光子进入离子检测系统。

公开(公告)号：US5086255A

公开(公告)日：1992-02-04

申请号：US473430

申请日：1990-02-01

申请人： Yukio Okamoto ,  Makoto Yasuda ,  Masataka Koga

发明人： Yukio Okamoto ,  Makoto Yasuda ,  Masataka Koga

IPC分类号： H01J49/12 ,  H01J49/10 ,  H05H1/46

CPC分类号： H01J49/105 ,  H05H1/46

摘要： A microwave induced plasma source includes a coaxial waveguide made up of a cylindrical outer conductor and an inner conductor which has the form of a helical coil, a discharge tube inserted into the helical coil in the axial direction thereof, and having an inner tube for introducing a sample and an outer tube for introducing a plasma gas so that a double tube structure is formed, a discharge-tube cooling device for causing a cooling gas to flow along the outer periphery of the discharge tube in directions parallel to the axis thereof, and a microwave power source for supplying microwave power to the coaxial waveguide. When the microwave induced plasma source is used as the light source of a spectrometer or the ion source of a mass spectrometer, a trace element can be readily determined qualitatively or quantitatively.

摘要翻译： 微波感应等离子体源包括由圆柱形外导体和内导体组成的同轴波导，该导体具有螺旋线圈的形式，沿轴向插入螺旋线圈的放电管，并具有用于引入的内管 用于引入等离子体气体以形成双管结构的样品和外管，用于使冷却气体沿着平行于其轴线的方向沿着排出管的外周流动的放电管冷却装置，以及 用于向同轴波导提供微波功率的微波电源。 当微波感应等离子体源用作光谱仪的光源或质谱仪的离子源时，微量元素可以容易地定性或定量地确定。

公开(公告)号：US5202562A

公开(公告)日：1993-04-13

申请号：US724179

申请日：1991-07-01

申请人： Masataka Koga ,  Toyoharu Okumoto ,  Masatoshi Kitagawa ,  Masamichi Tsukada ,  Yukio Okamoto

发明人： Masataka Koga ,  Toyoharu Okumoto ,  Masatoshi Kitagawa ,  Masamichi Tsukada ,  Yukio Okamoto

IPC分类号： G01N27/62 ,  H01J37/244 ,  H01J49/04 ,  H01J49/26

CPC分类号： H01J49/04

摘要： A standard containing the same elements as a sample is prepared. Concentrations of the elements of the standard are known previously. When signal intensities of an element of the standard solution and the sample exceed an upper limit of a pulse counter of an element analyzing apparatus, a transmitting rate of a passage, through which ionized elements of the standard and the sample pass, is controlled to be less than the ordinal transmitting rate of the passage in synchronism to the passing time of the elements. The concentrations of the elements of the sample is calculated based on output signals of the pulse counter concerning the elements of the standard and the sample and known concentration of the standard.

摘要翻译： 制备含有与样品相同元素的标准品。 标准要素的浓度先前已知。 当标准溶液和样品的元素的信号强度超过元素分析装置的脉冲计数器的上限时，将标准品和样品通过的通道的透射率控制为 小于通道的顺序传输速率与元件的通过时间同步。 基于脉冲计数器的输出信号计算样品的元素浓度，该脉冲计数器与标准品和样品的元素以及标准品的已知浓度相关。

公开(公告)号：US5252827A

公开(公告)日：1993-10-12

申请号：US753633

申请日：1991-08-30

申请人： Masataka Koga ,  Toyoharu Okumoto ,  Hiromi Yamashita ,  Katuo Kawachi ,  Yukio Okamoto

发明人： Masataka Koga ,  Toyoharu Okumoto ,  Hiromi Yamashita ,  Katuo Kawachi ,  Yukio Okamoto

IPC分类号： G01N27/68 ,  G01N21/73 ,  H01J49/04 ,  B01D59/44 ,  H01J49/00

CPC分类号： H01J49/0422 ,  H01J49/105

摘要： In the analysis of a specimen gas for at least one impurity, the specimen is fed to a microwave-induced plasma and the plasma is analyzed for the impurity. The plasma is formed by gases fed to it via an inner tube and an outer tube around said inner tube. The specimen is fed in undiluted form via the inner tube and a second gas which may be a standard gas is fed via the outer tube. The specimen gas and the second gas have compositions which are the same as to at least 75% by volume, e.g. are both air. A variety of analysis processes is made available.

公开(公告)号：US5164592A

公开(公告)日：1992-11-17

申请号：US581908

申请日：1990-09-13

申请人： Takehiko Kitamori ,  Masataka Koga ,  Tsuyoshi Nishitarumizu ,  Tetsuya Matsui ,  Kenji Yokose ,  Masaharu Sakagami

发明人： Takehiko Kitamori ,  Masataka Koga ,  Tsuyoshi Nishitarumizu ,  Tetsuya Matsui ,  Kenji Yokose ,  Masaharu Sakagami

IPC分类号： G01N27/62 ,  H01J49/04 ,  H01J49/10 ,  H01J49/16 ,  H01J49/26

CPC分类号： H01J49/164

摘要： The power density of a pulsed laser beam for irradiating a sample is adjusted to break down the sample into the form of a plasma. After the momentary breakdown of the sample into the form of a plasma, ions are generated having a high charge. Then, after a certain time elapses, the ions having a high charge recombine with the electrons in the plasma to provide monovalent or low valent ions. These low valent ions are taken out of the plasma and introduced to a mass spectrometric apparatus.

公开(公告)号：US5308977A

公开(公告)日：1994-05-03

申请号：US25139

申请日：1993-03-02

申请人： Konosuke Oishi ,  Masataka Koga ,  Hiromi Yamashita ,  Takashi Iino ,  Toyoharu Okumoto ,  Tsuyoshi Nishitarumizu

发明人： Konosuke Oishi ,  Masataka Koga ,  Hiromi Yamashita ,  Takashi Iino ,  Toyoharu Okumoto ,  Tsuyoshi Nishitarumizu

IPC分类号： G01N27/62 ,  H01J49/10 ,  H01J49/26 ,  H01J49/36

CPC分类号： H01J49/105

摘要： A plasma mass spectrometer generates an aerosol of a sample, by dissolving the sample in a liquid solvent, and spraying the liquid into a spray chamber via a nebulizer. The solvent condenses in the spray chamber and an aerosol of the sample then passes through a supply tube to a plasma torch. Microwave power from an output on the plasma torch converts the aerosol to a plasma, and the plasma passes to an analyzer. If microwave radiation reached the spray chamber, it would cause heating of the solvent which may evaporate it so that the solvent would be present in the plasma. Therefore, there is a wall between the spray chamber and the plasma torch and microwave output which blocks such microwave radiation.

摘要翻译： 等离子体质谱仪通过将样品溶解在液体溶剂中并通过喷雾器将液体喷射到喷雾室中而产生样品气溶胶。 溶剂在喷雾室中冷凝，然后样品的气溶胶通过供应管到等离子体焰炬。 来自等离子体焰炬上的输出的微波功率将气溶胶转换成等离子体，并且等离子体传递到分析器。 如果微波辐射到达喷雾室，则会引起溶剂的加热，这可能使其蒸发，使得溶剂将存在于等离子体中。 因此，喷雾室和等离子体焰炬和微波输出之间存在阻挡这种微波辐射的壁。

公开(公告)号：US4718763A

公开(公告)日：1988-01-12

申请号：US848460

申请日：1986-04-07

申请人： Kounosuke Oishi ,  Masataka Koga ,  Kazuo Yasuda

发明人： Kounosuke Oishi ,  Masataka Koga ,  Kazuo Yasuda

IPC分类号： G01N21/31 ,  G01N21/72 ,  G01J3/42

CPC分类号： G01N21/3103 ,  G01N2021/3111

摘要： There is provided an atomic absorption spectrophotometer wherein a magnetic field having a suitable value is applied to a light source radiating the emission spectral light of the atom to be analyzed in the advance direction of the radiated light in order to cause the Zeeman effect so that the wavenumber of a component which is included in the spectra shifted in wavenumber and which is varied to have a smaller wavenumber may coincide with or approach the wavenumber whereat the absorption spectrum is maximized, thereby the sensitivity of the atomic absorption being raised, the linear region of the working curve being improved, and the emission spectral light being stabilized.

摘要翻译： 提供了一种原子吸收分光光度计，其中将具有适当值的磁场施加到辐射待辐射原子的发射光谱的光源，以便辐射光的前进方向，以便产生塞曼效应，使得 包含在波数偏移并且具有较小波数的光谱中的分量的波数可以与吸收光谱最大化的波数重合或接近，从而提高原子吸收的灵敏度，线性区域 工作曲线得到改善，发射光谱稳定。

公开(公告)号：US4198589A

公开(公告)日：1980-04-15

申请号：US871807

申请日：1978-01-24

申请人： Shinji Mayama ,  Masataka Koga ,  Yoji Arai ,  Konosuke Oishi

发明人： Shinji Mayama ,  Masataka Koga ,  Yoji Arai ,  Konosuke Oishi

IPC分类号： H01J61/66 ,  H05B41/24

CPC分类号： H01J61/66

摘要： A spectral source comprises a lamp containing an anode and a cathode in an inert gas. The anode and cathode are different in shape and connected to a high-frequency power source to produce a high-frequency discharge between the anode and cathode to cause both sputtering of the cathode and excitation of a radiation having the spectrum according to the material sputtered from the cathode. The application of solely high-frequency power prevents adherence of the sputtered material to the interior walls of the lamp bulb thereby allowing a reduction of the dimensions of the lamp bulb, prolongating the life time of the lamp and increasing the stability and intensity of the radiation. A magnetic field may be applied to the radiation for Zeeman modulation. Due to the relatively small dimensions of the lamp bulb, relatively small and inexpensive magnets may be used.

摘要翻译： 光谱源包括在惰性气体中含有阳极和阴极的灯。 阳极和阴极的形状不同，并连接到高频电源，以在阳极和阴极之间产生高频放电，使得阴极溅射和具有根据溅射的材料的光谱的辐射 阴极。 单独使用高频功率可防止溅射材料对灯泡内壁的粘附，从而可以减小灯泡的尺寸，延长灯泡的使用寿命并增加辐射的稳定性和强度 。 可以将磁场施加到用于塞曼调制的辐射。 由于灯泡的尺寸相对较小，所以可以使用相对较小和便宜的磁体。