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: UK
• Isotopic: Yes
• Type of measurable elements: 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