DEVELOPMENT OF A FOURIER-TRANSFORM IOC CYCLOTRON RECONANCE MASS SPECETROMOTER FOR ISOTOPIC ANALYSIS

Research Project

Project/Area Number	61840019
Research Category	Grant-in-Aid for Developmental Scientific Research
Allocation Type	Single-year Grants
Research Field	分析・地球化学
Research Institution	TOKYO INSTITUTE OF TECHNOLOGY
Principal Investigator	MATSUO Sadao (1987) TOKYO INSTITUTE OF TECHNOLOGY, 理学部, 教授 (30015490) 大隅多加志 (1986) 東京工大, 理学部, 助手 (60114857)
Co-Investigator(Kenkyū-buntansha)	SHINOHARA Hiroshi TOKYO INSTITUTE OF TECHNOLOGY, 理学部, 助手 (30196406) 松尾禎士東京工業大学, 理学部, 教授 (30015490)
Project Period (FY)	1986 – 1987
Project Status	Completed (Fiscal Year 1987)
Budget Amount *help	¥11,100,000 (Direct Cost: ¥11,100,000) Fiscal Year 1987: ¥2,800,000 (Direct Cost: ¥2,800,000) Fiscal Year 1986: ¥8,300,000 (Direct Cost: ¥8,300,000)
Keywords	ION CYCLOTRON RESONANCE / RESIDUAL GAS ANALYSIS / ISOTOPERATION / MICROCOMPUTER / FOURIER TRANSFORM / 質量分析
Research Abstract	THE PURPOSE OF THE PROJECT IS TO CONSTRUCT THE ION CYCLOTRON RESONANCE MASS SPECTROMETER BY WHICH THE PRECISION IN ISOTOPRERATION MEASUREMENT CANBE EVALUATED WECOMPLETED THE MACHINE FEATURED AS FOLLOWS. (1) A PERMANENT MAGNET IS IS ADOPTED TO OBTAIN THE HOMOGENEOUS MAGNETIC FEILD WITH THE STRENGTH OF 0.3 TESLA. THE POLE GAP WAS 40 MM. (2) THE VACUUM SYSTEM WAS COMPOSED OF THE HIGH VCAPACITY OIL DIFFUSION PUMP. THE ULTIMATE VACUUM WAS 10^<-7>PASCAL. (3) A COMMERCIAL WAVE GENERA TOR WITH THE DERECT DIGITAL SYNTHESIZER PEINCIPLE WAS USED FOR EXCITATION OF IONS. (4) A VARIABLE GAS LEAK VALVE WAS ADOPTED FOR FUTURE EXPANSION OF INLET GAS HANDLING SYSTEM. THE IMMEDIATE TARGET IONS WOUD BE THE RESIDUAL GAS SPECIES.^<12>CO AND^<13>CO. (5) COMMERCIALLY AVALILABLE ADD-ON CIRCUIT BOARDS FOR MICROCOMPUTER WERE UTILISED FOR REALISATION OF THE FUNCTION OF ANALOG-TO-DEGITAL CONVERSION OF THE SIGNAL AND CONTROL PULSE GENERATION OF THE SYSTEM. (6) A SOFTWAREPACKAGE COMMERCIALLY AVAILABEL FOR MICROCOMPUTER FACILITATED THE DEVELOPMENT OF THE CONTROL AND MEASUREMENT PROGRAM FOR THE EXPERIMENT THE SOFTWARE WAS ORIGINALLY DEVELOPED FOR USING THE MICROCOMPUTER AS THE FFT ANALYSER.