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21. 发明专利

JPH09294920A ISOTOPE SEPARATION METHOD 失效
公开(公告)号：JPH09294920A
公开(公告)日：1997-11-18
申请号：JP11068096
申请日：1996-05-01
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUTAMI HIROSHI
IPC分类号： B01D59/34
摘要： PROBLEM TO BE SOLVED: To provide a method for separating isotopes which can separate and recover target isotopes in an adequate concentration efficiently and inexpen sively. SOLUTION: NH3 gas is supplied from a gas supply apparatus 14 into a reactor 15, exciting laser beams 1 are emitted into the reactor 15 from an exciting laser beam emitting apparatus 11 which emits laser beams of different wavelengths combined to excite only NH3 by the induction Raman effect, a dissociating laser beam 2 of a wavelength for photo-dissociating only excited NH3 is emitted into the reactor 15 from a dissociating laser beam emitting apparatus 12, after the NH3 molecules being excited and photo-dissociated, HC1 gas is sprayed into the reactor 15 from an HC1 gas supply apparatus 17, and residual NH3 is replaced with ammonium chloride so that N2 is separated and recovered.

22. 发明专利

JPH09280951A ANALYTICAL METHOD FOR IODINE 失效
公开(公告)号：JPH09280951A
公开(公告)日：1997-10-31
申请号：JP8825196
申请日：1996-04-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUTAMI HIROSHI
IPC分类号： G01J3/42 , G01N1/28 , G01N21/63 , G01N31/00
摘要： PROBLEM TO BE SOLVED: To obtain an analytical method in which the concentration of iodine molecules can be determined by a method wherein the molecular beam of a mixed gas which contains the iodine molecules is formed and the molecular beam whose vibration and rotation level is concentrated at a zero level is irradiated with a laser beam. SOLUTION: A mixed gas of iodine molecules 1 and NOX 2 is spouted into a vacuum so as to form a molecular beam, the molecular beam is cooled to a cryogenic state, and a vibration and rotation level which is in a Boltzmann distribution at room temperature can be set to a state that the level is concentrated nearly at a zero level. This is intended in such a way that, when the distribution is concentrated at the zero level, a laser at a single wavelength is excited only to a single excitation state. A laser beam 6 is irradiated from a direction at right angles to the advance direction of the molecular beam, and generated fluorescence is condensed by a condensing lens 8 so as to be detected by a photodetector 9. In order to prevent scattered light from being generated by an unwanted laser beam, a beam dampler 7 is used.

23. 发明专利

JPH09101287A METHOD FOR CALIBRATING MASS AND LASER WAVELENGTH 失效
公开(公告)号：JPH09101287A
公开(公告)日：1997-04-15
申请号：JP25776095
申请日：1995-10-04
申请人： MITSUBISHI HEAVY IND LTD
发明人： YUHARA TETSUO , FUTAMI HIROSHI
IPC分类号： G01J3/42 , G01N27/62 , G01N27/64 , H01J49/10 , H01J49/40
摘要： PROBLEM TO BE SOLVED: To simultaneously perform the mass calibration and laser wavelength calibration of a resonance ionization mass analyzer by photo-ionizing metallic atoms photoissociated from a sample gas composed of a metallic complex having a low boiling point with a laser beam. SOLUTION: A pulse nozzle 6 supplies a sample gas 7 to a vacuum chamber 1 and a pulse generator 9 synchronizes a pulse driver 8 to a YAG laser 5. The laser 5 excites a pigment laser 4 and a higher harmonic generating element 3 emits an ultraviolet laser beam toward the gas 7 in the chamber 1. The iron ion 10 which is generated when CO is used for the sample gas 7 is detected with a ceratron 11 by applying 2 an electric field upon the ion 10 and the flight time and signal intensity of the ion 10 are measured 13 after the ion 10 is amplified 12. Then a flight time analyzer is calibrated by using the flight time of the ion 10 having a mass number revealed by a mass spectrum obtained when the wavelength of the ultraviolet laser beam is fixed. In addition, the absolute wavelength of the laser beam can also be calibrated simultaneously by using the iron spectrum obtained from the wavelength dependency of the signal intensity of the iron ion.

24. 发明专利

JPH08247943A METHOD AND DEVICE FOR METERING CARBIDE 失效
公开(公告)号：JPH08247943A
公开(公告)日：1996-09-27
申请号：JP5473595
申请日：1995-03-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： ANDO KIYOSHI , FUTAMI HIROSHI
IPC分类号： G01N21/63
摘要： PURPOSE: To rapidly and nondestructively analyze CrC on the surface of a metal by focusing laser beams, evaporating and vaporizing the metal surface, generating luminous spectrum, and analyzing the spectrum by the luminous analysis. CONSTITUTION: YAG laser 1 is used as a light source, laser beams are focused on a metal surface 3 to be analyzed by a focusing lens 2, and the surface is vaporized. A vaporized sample is excited by plasma 7 generated by laser and generates a luminous spectrum. The luminous spectrum is focused by a focusing lens 4 and is detected by a multi-channel analyzer 5. Further, the intensity of Cr and C in an emission line is obtained by a signal processing device 6. Although a plurality of analysis lines of Cr and C exist, for example, analysis lines of Cr:425.43nm, and C: 247.86nm may be used, thus rapidly analyzing CrC on the metal surface as well as the surface of a working plant.

25. 发明专利

JPH06294890A METHOD FOR DETECTING FISSION PRODUCT AT THE TIME OF BREAKAGE OF NUCLEAR FUEL 失效
公开(公告)号：JPH06294890A
公开(公告)日：1994-10-21
申请号：JP8077693
申请日：1993-04-07
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUTAMI HIROSHI
IPC分类号： G21C17/07 , B82B1/00
摘要： PURPOSE:To detect fission product gas without having influence produced by background radioactivity at ultra-high sensitivity and quickly find out breakage of nuclear fuel by detecting fission product with a multiple photon sensitization ionization method. CONSTITUTION:Fission products such as xenon, krypton and cesium released at the time when nuclear fuel of a fast breeder is broken are detected with a multiple photon sensitization ionization method. In other words, a certain quantity of Cs is added to metallic sodium 2 heated in a high temperature oven 1. Ambient gas in the high temperature oven 1 is argon gas and sodium vapor and Cs gas are introduced into a detection cell 4 through a sampling tube 3. An ion detection electrode 5 is set in the cell 4, which is heated in a constant temperature oven 6. When the wave length of laser Y indicates 455.5nm which shows a distortion position, its signal indicates the maximum. Part of output of the laser 7 is supplied to a photodiode 10 and becomes a trigger signal. A boxcar integrator 11 integrates a signal during oscillation of the laser 7 by means of its trigger signal.

26. 发明专利

JP2002202289A TWO-WAVELENGTH PHOTOIONIZATION MASS SPECTROMETER 失效
公开(公告)号：JP2002202289A
公开(公告)日：2002-07-19
申请号：JP2001000519
申请日：2001-01-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUTAMI HIROSHI
IPC分类号： G01N27/64 , G01N27/62 , G01N30/72 , H01J49/10 , H01J49/40
摘要： PROBLEM TO BE SOLVED: To provide a two-wavelength photoionization mass spectrometer capable of directly analyzing dioxins in exhaust gas. SOLUTION: This mass spectrometer is equipped with a sample introduction means 15 for introducing continuously exhaust gas 13 from a gas duct 12 into a vacuum chamber 11 as leakage molecular beams 14, a first laser irradiation means comprising a wavelength fixed laser 18a and a wavelength variable laser 18b for irradiating first pulse laser beams 17 into the introduced leakage molecular beams 14 through a condensing lens 16, a second laser irradiation means comprising the wavelength fixed laser 18a for irradiating the condensing position of the first laser beams 17 with second pulse laser beams 19 in the spatially overlapped state without the aid of the condensing lens, and a time-of- flight mass spectrometer 22 equipped with an ion detector 21 for analyzing molecular ion 20 generated by being ionized by irradiating the leakage molecular beams 14 with the first laser beams 17 and the second laser beams 19 in the spatially and temporally overlapped state.

27. 发明专利

JP2001124739A ANALYZER FOR DIOXINS AND COMBUSTION CONTROL SYSTEM 失效
公开(公告)号：JP2001124739A
公开(公告)日：2001-05-11
申请号：JP30343899
申请日：1999-10-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUTAMI HIROSHI , TAKATSUDO YASUHIRO
IPC分类号： G01N27/62 , F23G5/00 , F23G5/44 , F23G5/50 , G01N1/00 , G01N1/22 , G01N27/64 , G01N31/00 , G01N33/00
摘要： PROBLEM TO BE SOLVED: To provide an analyzer, for dioxins, by which the dioxins in an exhaust gas discharged from an incinerator or the like are analyzed directly in real time and to provide an in-furnace combustion control system. SOLUTION: A collecting means 14 by which a combustion gas 10 containing dioxins discharged from an incinerator or the like is collected directly from an in-furnace gas duct 11 and which is composed of a collecting tube 13 provided with a filter 12 at the tip is provided. A spouting means 19 by which a collected gas 15 containing the dioxins is spouted into a vacuum chamber 18 by using a nozzle 17 comprising a pulse valve used to form a supersonic jet stream 16 is provided. A laser irradiation means 22 by which the spouted jet stream 16 is irradiated with a laser beam 20 having a wide spectrum width and by which molecular ions 21 as the homolog of the dioxins are generated in a resonance sensitization ionization process is provided. A time-of-flight mass spectrometer 24 which analyzes the dioxins in the generated molecular ions 21 and which is equipped with an ion detector 23 is provided. The homolg of the dioxins in the combustion gas 11 is analyzed diretly.

28. 发明专利

JPH10185821A METHOD AND DEVICE FOR QUANTITATIVELY DETERMINING SMALL AMOUNT OF CONSTITUENT IN GAS 失效
公开(公告)号：JPH10185821A
公开(公告)日：1998-07-14
申请号：JP34078496
申请日：1996-12-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUTAMI HIROSHI , FUJIOKA YUICHI
IPC分类号： G01N21/72 , G01N1/00 , G01N1/22 , G01N21/31 , G01N21/73
摘要： PROBLEM TO BE SOLVED: To provide a method and device for quantitatively determining a small amount of constituent in a gas easily, rapidly, and accurately. SOLUTION: A coal gas that circulates inside a high-temperature pipe 1 is sampled into a sampling line 2, a flammable gas and air are mixed into the coal gas by a flammable gas feeding device 3 and an air-feeding device 4 for generating a chemical flame 20. At the same time, a stock solution is supplied into a container 12 by a stock solution supply device 13, then pure water is supplied by a pure water supply device 14 for preparing a standard solution 21 with a specific concentration, and the solution 21 is introduced into the chemical flame 20 by a nebulizer 15. The flame light of the chemical flame 20 is converged to a spectroscope 6 by a focusing lens 5, only the emission spectrum of an analysis target element is converted into an electrical signal by a photomultiplier 7 and is transmitted to a control device 9 via an amplifier 8, the relationship between the concentration of the standard solution 21 and the above emission spectrum intensity is graphically expressed (abscissa: standard solution concentration, ordinate: emission spectrum intensity), and the cross point with the abscissa is obtained, thus calculating the small amount of constituent in the coal gas.

29. 发明专利

JPH0915210A METHOD FOR DETERMINING COLD-FUSION PRODUCT NUCLEAR SPECIES 失效
公开(公告)号：JPH0915210A
公开(公告)日：1997-01-17
申请号：JP16379595
申请日：1995-06-29
申请人： MITSUBISHI HEAVY IND LTD
发明人： YUHARA TETSUO , FUTAMI HIROSHI
IPC分类号： G01N27/62 , G01N27/64 , G21B1/00 , G21B3/00 , H01J49/10
摘要： PURPOSE: To fix chemical species whose mass numbers are very close to each other by a constitution in which the chemical species containing a desired nuclear species are irradiated with their natural wavelengths for selective ionization. CONSTITUTION: A second harmonic generator SHG 10 is used in order to obtain an ultraviolet laser beam by excitation of a dye laser 9 using a YAG laser 8. An electric field is applied by an electrode 3 to ions 11 generated within a vacuum chamber 1, and the ions are detected by a Ceratron (ceramic secondary-electron multiplier) 4. A preamplifier 12 for signal amplification and a digital oscilloscope 13 for measuring ion flight time and signal intensity are connected to the Ceratron 4. A gas sample which shows mass number 4 is introduced into a mass spectrometer and, if an ion signal is detected during sweep at laser wavelengths up to 300nm, it indicates that HT or D2 is contained, therefore, the HT and D2 can be discriminated from each other according to isotope shifts. Identification of unclear species produced by cold fusion is thus facilitated, and analysis of nuclear species produces by other nuclear fusion is also facilitated.

30. 发明专利

JPH08194063A TRITIUM WATER ANALYZING METHOD 失效
公开(公告)号：JPH08194063A
公开(公告)日：1996-07-30
申请号：JP553795
申请日：1995-01-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUTAMI HIROSHI
IPC分类号： G01T1/167 , H01S3/00
摘要： PURPOSE: To realize a tritium analyzing method by which existing states of radioactive nuclides can be distinguished while the sensitivity being kept as high as that of activation analysis of tritium. CONSTITUTION: An analysis method to analyze tritium existing as tritium water state easy to be taken in an ecological system at as high sensitivity as that of an activation analysis is realized by selectively exciting water molecular containing tritium by irradiating a subject of analysis with infrared laser beam from an infrared laser 4 and then ionizing only water molecules excited by irradiating with ultraviolet laser beam from an ultraviolet laser 5 and detecting the existence of ions based on electric current running between a pair of parallel flat plate electrodes 1a, 1b to which high d.c. current voltage is applied.

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