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Journal Articles

Vacuum leak hunting management by using Breath-Mass

Hiratsuka, Hajime; Hatano, Toshihisa; Abe, Tetsuya

Heisei-23-Nendo Kiki, Bunseki Gijutsu Kenkyukai Hokoku, p.64 - 65, 2011/09

JP, H16-234010   Licensable Patent Information Database   Patent publication (In Japanese)

no abstracts in English

Journal Articles

Development of gas analyzer to aim for speed and high sensitivity and shaping of mass spectrum

Hatano, Toshihisa; Hiratsuka, Hajime; Abe, Tetsuya

Journal of the Vacuum Society of Japan, 54(9), p.474 - 477, 2011/09

JP, H16-234010   Licensable Patent Information Database   Patent publication (In Japanese)

This study focused on more reproducible pumping time constant of vacuum devices. The mass spectrum measured in non-steady state was corrected with a mathematical technique corresponding to constant pressure in steady state. The correction mass spectrum was evaluated from the viewpoint of the gas analysis. In measuring the sample gas was a pulse gas injection. After injection the gas pressure decreases exponentially. Here was confirmed reproducible pumping time constant by pulsing gas injection and investigated influence of the pumping time constant to the correction mass spectrum. N$$_{2}$$, O$$_{2}$$, Ar, CO$$_{2}$$ were measured the above method and analyzed. The correction mass spectrum showed use from the comparison with mass spectrum in The National Institute of Standards and Technology (NIST) mass spectra library as for the analysis enough.

Journal Articles

Development of breath gas and skin excretion gas analysis technology using quadrupole mass spectrometer

Hiratsuka, Hajime; Abe, Tetsuya; Nemoto, Masahiro; Hasegawa, Koichi; Arai, Takashi; Hatano, Toshihisa

Heisei-18-Nendo Kiki, Bunseki Gijutsu Kenkyukai Hokoku, p.163 - 166, 2006/09

JP, H16-234010   Licensable Patent Information Database   Patent publication (In Japanese)

no abstracts in English

Oral presentation

Development of breath gas analysis technology using quadrupole mass spectrometer

Hiratsuka, Hajime; Hatano, Toshihisa; Hasegawa, Koichi; Abe, Tetsuya

no journal, , 

JP, H16-234010   Licensable Patent Information Database   Patent publication (In Japanese)

no abstracts in English

Oral presentation

Development of "BODAIMOTO" sake gas components analysis technology using quadrupole mass spectrometer

Hiratsuka, Hajime; Hasegawa, Koichi; Hatano, Toshihisa; Abe, Tetsuya; Takenaka, Shingo; Sumihara, Noriya*

no journal, , 

JP, H16-234010   Licensable Patent Information Database   Patent publication (In Japanese)

no abstracts in English

Oral presentation

Development of various gas analysis technologies by quadrupole mass spectrometer

Hiratsuka, Hajime; Hatano, Toshihisa; Hasegawa, Koichi; Abe, Tetsuya

no journal, , 

JP, H16-234010   Licensable Patent Information Database   Patent publication (In Japanese)

no abstracts in English

Patent

高感度ガス分析装置

廣木 成治; 秦野 歳久; 丹澤 貞光; 阿部 哲也

not registered

JP, H16-234010  Patent licensing information  Patent publication (In Japanese)

【課題】大気等に含まれる微量ガスを定量するガス分析装置において,対象ガスの検出感度と測定精度を高めること。 【解決手段】大気等に含まれる微量ガスを繰返し高感度で定量することができるガス分析装置であって,被測定ガスをパルス的に流すためのガス流路と,真空排気装置付四極子型質量分析計と,前記ガス流路の中間から被測定ガスの一部を前記四極子型質量分析計のイオン源に流入させるためのオリフィスとから構成し,被測定ガスの流れのパルス形状を繰返し再現できるようにするとともに,水蒸気等の吸着性ガスが前記四極子型質量分析計の管壁や電極に吸着するのを防いで,対象ガスの検出感度と測定精度を大幅に改善した装置を提供する。

7 (Records 1-7 displayed on this page)
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