NGX Helium Plus

Advanced noble gas mass spectrometer optimized for high-precision helium isotope analysis. Features include a patented cathode ion source, ElectroStatic Filter (ESF), and ATONA® amplifiers for unmatched sensitivity and dynamic range.

• Status: Active
• Country: United Kingdom of Great Britain and Northern Ireland
• Isotopic: Yes
• Analyte Type / Target Of Analysis: Noble gases
• Measurable Isotopes/Elements: He isotopes
• Analyzer Type
  : Magnetic Sector MS
• Ion Source Type: Electron impact
• Inlet Types: Automated inlet with cryogenic traps, getters, and low-volume analyzer
• High Resolution
  : Yes
• Mass Resolution/ Mass Resolving Power
  : >600 (10% valley definition); RP 2500
• Sensitivity
  : Helium: 2×10−4 A/Torr; Enhanced sensitivity with ESF
• Dynamic Range
  : 1nA to 1aA
• Detector Type
  : 1 Faraday cup with ATONA® amplifiers and 1 discrete dynode secondary electron multiplier
• 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
  : Extremely low, <5×10−14 cc STP for 36Ar
• Geometry Type
  : Extended double focusing
• Focusing Type
  : Single focusing
• Magnetic Sector Radius/ Angle
  : 27 cm radius; 90° deflection
• Cooling System
  : Liquid nitrogen cryogenic cooling and air-cooled electronics
• Vacuum System
  : Turbo molecular and ion-getter pumps with ultra-low volume design
• Gas Supply: High-purity helium, neon, and other noble gases