GB-TIMS

Thermal ionization mass spectrometer with double-focusing capabilities.

• Status: Active
• Country: China
• Isotopic: Yes
• Type of measurable elements: Thermoionizing elements (Sr, Nd, Os, Pb, U, and others)
• Measurable isotopes/elements: 87Sr/86Sr, 143Nd/144Nd, 234U/238U, 235U/238U, and others
• Analyzer type : Magnetic Sector MS
• Ion source type: Thermal ionization
• Inlet types: filament drum with single- and dual-filament support
• Mass range : 3-310 amu
• Mass resolution/ Mass resolving power : >450 (5% valley definition)
• Multicollector : Yes
• Collectors qty : Up to 16 Faraday cups and 4-SEM channels (Secondary Electron Multipliers)
• Abundance sensitivity : ≤0.1 ppm using RPQ (Retarding Potential Quadrupole) lens
• Dynamic range : Wide dynamic range with simultaneous detection from cps to 50 V signal
• Detection limits : Sub-ppm levels for isotope ratio measurements
• Precision : High precision: ≤0.002% for 87Sr/86Sr and uranium isotopes (standard samples)
• Signal stability, relative standard deviation : ±30 ppm/30 min
• Detector type : Fixed multicollector array with Faraday cups and SEM; optimized with RPQ lens
• Possible amplifiers : Up to 32 high-stability electrometric amplifiers with dynamic range up to 50 V; computer-controlled gain calibration
• Acceleration voltage : 10 kV
• Sample turret : 21-position filament drum with automated positioning
• Geometry type : Double-focusing Nier-Johnson geometry
• Focusing type : Multilens focusing with double quadrupole zoom optics
• Magnetic sector radius/ angle : 250 mm; 90° deflection
• Electric sector radius/ angle : 350 mm
• Vacuum system : Oil-free system with 3 ion-getter pumps and a turbomolecular pump
• Gas supply: Optional nitrogen bleed system for vacuum optimization
• Power Requirements and Consumption : 100–240 V, 50/60 Hz; power consumption: 8 kVA
• Environmental requirements : Temperature: 15 to 25°C; Humidity: ≤80%
• Dimensions and Weight: Dimensions: 215 cm (L) x 184 cm (W) x 155 cm (H); Weight: 1500 kg