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: United Kingdom of Great Britain and Northern Ireland
• Isotopic: Yes
• Analyte Type / Target Of Analysis: Noble gases
• Measurable Isotopes/Elements: Isotopes of noble gases
• Analyzer Type
  : Magnetic Sector MS
• Ion Source Type: Electron impact
• Signal Stability / Relative Standard Deviation
  : <25 ppm drift over 30 minutes
• Inlet Types: Fully automated inlet system with cryogenic traps, getters, and high-vacuum components
• 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
• 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)
• 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