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21. 发明专利

JPH0510868A PARTICLE CONCENTRATION MEASURING DEVICE 失效
公开(公告)号：JPH0510868A
公开(公告)日：1993-01-19
申请号：JP16421491
申请日：1991-07-04
申请人： HITACHI LTD
发明人： FUJIMORI HARUO
IPC分类号： G01N15/02 , G01N15/06
摘要： PURPOSE:To enable a finely divided particle within a fluid to be subjected to particle diameter discrimination measurement by performing particle diameter discrimination of a particle into a focusing region by laser trapping and condensing it and then inducing laser breakdown. CONSTITUTION:Laser beam from a laser 2 for laser trapping is focused into a cell 9 by lenses 7 and 8 and a particle exceeding a trap threshold is condensed into a focusing region. Laser beam from a laser 1 for laser breakdown is emitted while the focusing position is matched for inducing laser breakdown due to the particle. Then, by allowing the plasma light to be detected with a photodetector 11, concentration of a finely divided particle within a fluid in the cell can be subjected to particle diameter discrimination measurement with a high sensitivity.

22. 发明专利

JPH0479572B2 失效
公开(公告)号：JPH0479572B2
公开(公告)日：1992-12-16
申请号：JP19541986
申请日：1986-08-22
申请人： HITACHI LTD
发明人： MATSUI TETSUYA , FUJIMORI HARUO
IPC分类号： G01N21/64

23. 发明专利

JPH03161026A APPARATUS FOR LIQUEFYING AND RECOVERING METAL VAPOR 失效
公开(公告)号：JPH03161026A
公开(公告)日：1991-07-11
申请号：JP29734489
申请日：1989-11-17
申请人： HITACHI LTD
发明人： FUJIMORI HARUO
IPC分类号： B01D59/34
摘要： PURPOSE:To obtain the title apparatus enhanced in recovery efficiency preventing the falling of a liquid droplet on the way even when liquid condensation is generated by constituting a recovery plate of an inclined surface wherein the length in the max. inclination direction is equal to or less than critical length and providing a recovery trough to the lower end of the inclined surface or under the inclined surface in its vertical direction. CONSTITUTION:This apparatus consists of an evaporation source 8 generating metal vapor q, a recovery plate 4 condensing and liquefying the metal vapor 9, a recovery plate heater 3 heating the recovery plate 4 and a vacuum container 1 receiving all of them. The recovery plate 4 constituted of an inclined surface wherein the length in the max. inclination direction is shorter than critical length represented by formula I [wherein V(r) is the volume of a liquid droplet having a radius (r), N' (r) is the number density of liquid droplets having radii (r-r+dr), Rf is the flow-down start radius of a liquid droplet and Rd is the falling critical radius of a liquid droplet] is provided and the metal condensed and liquefied on the recovery plate 4 is recovered by the recovery trough 5 arranged to the lower end of the recovery plate 4 or under the recovery plate in its vertical direction. As a result, the falling of a liquid droplet on the way of flow-down can be prevented and the liquefying and recovery efficiency of metal vapor is enhanced.

24. 发明专利

JPH0319503B2 失效
公开(公告)号：JPH0319503B2
公开(公告)日：1991-03-15
申请号：JP12247385
申请日：1985-06-07
申请人： HITACHI LTD
发明人： FUJIMORI HARUO , MATSUI TETSUYA
IPC分类号： G01N21/64 , G01N21/65

25. 发明专利

JPS63142234A LIGHT SCATTERING TYPE APPARATUS FOR DETECTING FINE PARTICLE IN LIQUID 失效
公开(公告)号：JPS63142234A
公开(公告)日：1988-06-14
申请号：JP28943586
申请日：1986-12-04
申请人： HITACHI LTD
发明人： KITAMORI TAKEHIKO , FUJIMORI HARUO , SUZUKI KAZUMICHI
IPC分类号： G01N15/14 , G01N15/02
摘要： PURPOSE:To reduce the detection limit particle size of fine particles in a liquid, by increasing the intensity of scattering beam due to particles and sensitizing a detector. CONSTITUTION:Detection laser beam 1 and laser beam 2 (destructing laser beam) for destructing or vaporizing the particles 3 in a liquid or forming the same into plasma are allowed to irradiate the liquid. Even when there is no destructing laser 2, a part of the detection laser beam 1 is scattered by the particles 3 but, when the particles 3 are sufficiently small, scattering beam 5 due to the particles is embedded in the Rayleigh scattering beam of the liquid and detection becomes difficult. When the laser beam 2 is allowed to irradiate the particles 3, the particles 3 are changed or formed into plasma corresponding to the power of the laser beam 2 and, according to circumstances, even the liquid around the particles 3 is vaporized or formed into plasma. Therefore, air bubbles 4 are generated at the place where the particles 3 are present and the volume thereof becomes larger than that of the particles. As a result, the fine particles not detected by the beam scattering of the particles 3 themselves are vaporized or formed into plasma to make it possible to detect fine particles.

26. 发明专利

JPS61140893A Measuring device for degree of combustion of fuel aggregate 失效
标题翻译：燃料燃烧程度的测量装置
公开(公告)号：JPS61140893A
公开(公告)日：1986-06-27
申请号：JP26279284
申请日：1984-12-14
申请人： Hitachi Ltd
发明人： OTSUKA HISAO , FUJIMORI HARUO , OZAWA YOSHIHIRO
IPC分类号： G21C17/06

27. 发明专利

JPS61128192A Nondestructive inspection method of nuclear reactor fuel 失效
标题翻译：核反应堆燃料的非结构检验方法
公开(公告)号：JPS61128192A
公开(公告)日：1986-06-16
申请号：JP24957684
申请日：1984-11-28
申请人： Hitachi Ltd
发明人： FUJIMORI HARUO , OTSUKA HISAO
IPC分类号： G21C17/06

28. 发明专利

JPS6170494A Measuring device for degree of combustion of fuel aggregate 失效
公开(公告)号：JPS6170494A
公开(公告)日：1986-04-11
申请号：JP19161884
申请日：1984-09-14
申请人： Hitachi Ltd
发明人： OTSUKA HISAO , FUJIMORI HARUO , OZAWA YOSHIHIRO
IPC分类号： G21C17/06

29. 发明专利

JPS60211394A Volume reduction treating method and device for spent fuel 失效
标题翻译：减少燃料处理方法和装置
公开(公告)号：JPS60211394A
公开(公告)日：1985-10-23
申请号：JP6818584
申请日：1984-04-05
申请人： Hitachi Ltd
发明人： FUJIMORI HARUO , UETAKE NAOTO , YUSA HIDEO , IBA HAJIME
IPC分类号： G21F9/30 , B01J2/00 , G21C19/44 , G21C19/48 , G21F9/00
CPC分类号： Y02W30/882 , Y02W30/884

30. 发明专利

JPS58218738A Observation area display unit for scanning type electron microscope 失效
标题翻译：用于扫描型电子显微镜的观察区域显示单元
公开(公告)号：JPS58218738A
公开(公告)日：1983-12-20
申请号：JP9930782
申请日：1982-06-11
申请人： Hitachi Ltd
发明人： FUJIMORI HARUO
IPC分类号： H01J37/20 , H01J37/22 , H01J37/28
CPC分类号： H01J37/28
摘要： PURPOSE:To quickly detect an observation area and facilitate its setting by spacially differentiating the brightness distribution of the secondary electron image of a sample, taking out its characteristics as line pictures, and displaying them on a CRT display. CONSTITUTION:The electron beam 3 from an electron gun 2 controlled by an electron beam scanning circuit 1 is raster-scanned on a sample 4. Then the secondary electron 5 from the sample 4 is detected by a detector circuit 6 and the detection signal is differentiated twice by a differential circuit 8. Besides, a signal exceeding preset wave height is sent to a rectangular generator circuit 10 through a wave height discriminator circuit 9 and the output is displayed on a CRT display 17. Furthermore a display image can be stored in a memory circuit 12 through an arithmetic control circuit 11. As a result, since only the characteristic parts of the secondary electron image of the sample can be extracted as line pictures, the observation area can quickly be detected and its setting is facilitated.
摘要翻译：目的：通过对样品的二次电子图像的亮度分布进行空间微分，将其特征作为线条图像进行快速检测，便于其设置，并将其显示在CRT显示器上。构成：由电子束扫描电路1控制的电子枪2的电子束3在样品4上被光栅扫描。然后，由检测器电路6检测来自样品4的二次电子5，检测信号被差分另外，通过波高鉴别器电路9将超过预设波高的信号发送到矩形发生器电路10，并将输出显示在CRT显示器17上。此外，显示图像可以存储在存储电路12，结果，由于仅能够提取样本的二次电子图像的特征部分作为线条图像，所以可以快速检测观察区域并且便于其设定。

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