NGX

Advanced noble gas mass spectrometer with high precision for isotope ratio analysis of noble gases. Features include ATONA® amplifiers, low-volume static vacuum analyzer, and large-radius magnet.

• Status: Active
• Country: UK
• Isotopic: Yes
• Type of measurable elements: Noble gases
• Measurable isotopes/elements: Isotopes of noble gases
• Analyzer type : Magnetic Sector MS
• Ion source type: Electron impact
• Inlet types: Fully automated inlet system with cryogenic traps, getters, and high-vacuum components
• Mass range : 1-200 Daltons
• High Resolution : Yes
• Mass resolution/ Mass resolving power : >600 (10% valley definition)
• Multicollector : Yes
• Collectors qty : 10: 9 Faraday cups and 1 secondary electron multipliers ((optional more SEM)
• Sensitivity : Helium: 2×10−4 A/Torr; Argon: 1×10−3 A/Torr
• Abundance sensitivity : <1 ppm< for 40Arr at 39A
• Dynamic range : 1nA to 1aA
• Detection limits : Sub-ppb levels for noble gases
• Precision : <0.01%for isotopic ratios
• Signal stability, relative standard deviation : <25 ppm drift over 30 minutes
• Detector type : Faraday detectors with ATONA® amplifiers and discrete dynode SEMs
• Possible amplifiers : ATONA® amplifier (equivalent headroom of 100V measured on a 10¹¹Ω resistor with the equivalent noise characteristic of a 1014Ω amplifier at 20 secs integration)
• Acceleration voltage : 8 kV
• Background : 5×10−14 cc STP at mass 36Ar
• Geometry type : Double-focusing with extended geometry
• Focusing type : Single focusing
• Magnetic sector radius/ angle : 27 cm radius; 90° deflection
• Cooling system : Liquid nitrogen cryotrap and air-cooled electronics
• Vacuum system : Turbo molecular pumps (80 L/s), ion-getter pump (40 L/s), static vacuum chamber
• Gas supply: High-purity noble gases