MI 1201-AT

Retired thermal ionization mass spectrometer. Capable of analyzing isotopes ranging from lithium to transuranic elements.

• Status: Discontinued
• Country: Ukraine
• Isotopic: Yes
• Type of measurable elements: Thermoionizing elements (Sr, Nd, Os, Pb, U, and others)
• Measurable isotopes/elements: Uranium isotopes: 234U, 235U, 236U, 238U and others
• Analyzer type : Magnetic Sector MS
• Ion source type: Thermal ionization
• Inlet types: Sample turret; dual-strip mode for simultaneous sample analysis
• Mass range : 3 to 280 amu
• Mass resolution/ Mass resolving power : >500 for uranium isotopes (5% valley definition)
• Multicollector : Yes
• Collectors qty : Five Faraday collectors with a secondary electron multiplier (SEM)
• Abundance sensitivity : Isotopic sensitivity threshold for uranium <5 ppm (mass 237, Δm = 1)
• Dynamic range : 5 x 10⁵ for Faraday detection; extended to 10⁸ in SEM mixed mode
• Detection limits : Sub-ppm levels for isotopic measurements
• Precision : Single-collector mode: <0.01% internal precision; Multi-collector mode: <0.002% internal precision
• Signal stability, relative standard deviation : <0.005% over 20 minutes
• Detector type : Faraday cups and secondary electron multiplier (SEM)
• Possible amplifiers : High-stability amplifiers with 10¹¹ Ω resistors
• Acceleration voltage : 10 kV
• Sample turret : 22-position turret with motorized or manual adjustment
• Geometry type : Double-focusing sector with a 90° magnetic analyzer
• Focusing type : Stigmatic focusing
• Magnetic sector radius/ angle : 200 mm radius; 90° deflection
• Cooling system : Air-cooled
• Vacuum system : Oil-free system: two charcoal sorption pumps, three ion-getter pumps, and a turbomolecular pump
• Power Requirements and Consumption : Three-phase 220 V ±10%, 50 Hz; maximum power consumption: 5 kVA
• Environmental requirements : Temperature: 10–35°C; Humidity: up to 80% at 25°C; Atmospheric pressure: 84.0–106.7 kPa
• Dimensions and Weight: Analytical unit: 1500 x 1400 x 1500 mm; Operator desk: 1400 x 800 x 800 mm; Total weight: 2500 kg