High-resolution multicollector static vacuum mass spectrometer (SVMS) designed for noble gas analysis. Equipped with a 35 cm, 120° magnetic sector analyzer and advanced ion optics for precision isotopic measurements of small gas samples.
Specifications
- Category: Inorganic and Isotopic Mass Spectrometry
- Technique: Noble Gas MS
- Manufacturer: Thermo Fisher Scientific
- Country: Germany
- Available: Active
Specifications
High-resolution multicollector static vacuum mass spectrometer (SVMS) designed for noble gas analysis. Equipped with a 35 cm, 120° magnetic sector analyzer and advanced ion optics for precision isotopic measurements of small gas samples.
- Status: Active
- Country: Germany
- 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: <0.2% drift per hour at 100 KCPS; Drift of ±25 ppm/30 min
- Inlet Types: Dual inlet with getter pumps, cold traps, and pipette systems for precise sample handling
- High Resolution: Yes
- Mass Resolution/ Mass Resolving Power: Standard resolution: >600; High resolution: >1500 (10% peak valley definition)/ Res. Power > 5500 @ 0.05 mm source slit.Typical achieved > 7000
- Multicollector: Yes
- Collectors Qty: 5 Combined Faraday-Multiplier (CFM) detectors, including high-resolution options
- Sensitivity: Helium: >2×10−4 Amps/Torr; Argon: >1×10−3 Amps/Torr
- Abundance Sensitivity: < 1 ppm for adjacent masses sensitivity (39 contribution from 40)at a pressure of 1 x 10-7 mbar
- Dynamic Range: 2 cps to ~1.4 × 10⁶ cps
- Detection Limits: Sub-ppb levels for noble gas isotopes
- Precision: <0.01% for isotopic ratios of noble gases
- Detector Type: Faraday cups with suppressed noise and compact discrete dynode (CDD) electron multipliers
- Possible Amplifiers: 10¹⁰, 10¹¹, 10¹², and 10¹³ Ω resistors
- Background: ≤ 5e-13 cc STP at mass 36; Dark noise: <10 CPM (0.2 CPM typical)
- Geometry Type: Extended geometry with 120° deflection
- Focusing Type: Single focusing
- Magnetic Sector Radius/ Angle: 35 cm radius, 120° deflection
- Cooling System: Liquid nitrogen cooling for getters; water cooling for turbo pumps
- Vacuum System: Ultra-high static vacuum system with turbo molecular and ion-getter pumps
- Gas Supply: High-purity noble gases (e.g., helium, neon, argon)
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