GB-TIMS

Thermal ionization mass spectrometer with double-focusing capabilities.

• Status: Active
• Country: China
• Isotopic: Yes
• Analyte Type / Target Of Analysis: 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
• Signal Stability / Relative Standard Deviation
  : ±30 ppm/30 min
• Inlet Types: filament drum with single- and dual-filament support
• 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)
• 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
• 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 Specifications: 100–240 V, 50/60 Hz; power consumption: 8 kVA
• Environmental Specifications: Temperature: 15 to 25°C; Humidity: ≤80%
• Physical Specifications: Dimensions: 215 cm (L) x 184 cm (W) x 155 cm (H); Weight: 1500 kg