New-Generation High-Resolution Glow Discharge Mass Spectrometer -- GD90 Trace
The GD90 Trace features a mature optical platform and an advanced, stable electronic control system. Based on the high-performance MSI AutoConcept ion optical system, it achieves high stability and ultra-low detection limits, making the GD90 Trace outperform other comparable instruments.
Model: GD90 Trace
Brand: MSI
Introduction
Product Introduction:
The GD90 Trace features a mature optical platform and an advanced, stable electronic control system. Based on the high-performance MSI AutoConcept ion optical system, it achieves high stability and ultra-low detection limits, making the GD90 Trace outperform other comparable instruments.
 | Ion Source System More durable automatic vacuum valve ensures analysis of 50,000+ samples Automatic evacuation without risk of damage to the ion source turbopump and prevents accidental valve closure Additional filters further reduce gas background noise Optional dry gas purge system for faster attainment of lower gas background noise |
| Detection system Direct ion-counting multiplier to reduce background noise. Rapid switching between the electron multiplier and Faraday cup provides a linear dynamic range of up to 10^12 Collision filter for improved abundance sensitivity Optional second electron multiplier, spare hot-pullable ion counter, and ion counter for short-lived radioisotopes. Fast analysis detector for depth profiling |  |
Electronics system
 Ion source high-voltage module |  Vacuum control module |
 Analyzer high-voltage module |  Magnet controller module |
Features
| Fewer wiring connections Simpler fault diagnosis Easier replacement | More modern DACs and ADCs Increased stability Lower energy consumption More flexible systems Can be updated online |
GD90 Trace main features
1. High-purity tantalum discharge cell and ion source structure that are easy to clean
2. Effective low-temperature cooling to minimize the gas background
3. Equipped with both needle-shaped and block-shaped sample cells
4. No mass bias for light/heavy elements
5. Use 180Ta and 181Ta to quickly check the electron multiplier and Faraday cup, ensuring response consistency
6. When other inert gases (e.g., krypton) need to be used, low gas flow rates provide greater cost savings
7. Capable of analyzing alloys and high-purity samples (both conductors and non-conductors) in various forms
8. Low sputtering rate—under routine analysis conditions, the sputtering rate ranges from 100 nm/min (non-conductors) to 150 nm/min (conductors); when lower rates are required, the sputtering rate can be reduced by at least another factor of 5.
9. RSFs and detection limits are derived from published and easily traceable methods
10. The front-end device can be customized with a dedicated glovebox for nuclear material applications as required by the user
Specifications:
The GD90 Trace, as a high-resolution double-focusing glow discharge mass spectrometer, enables full elemental analysis from major elements (wt%) to ultra-trace elements (ppb to sub-ppb) in a single scan. The ion source and analyzer of the GD90 Trace are constructed entirely of stainless steel.
| Resolution | Continuously adjustable |
| Background noise | ＜0.5cps |
| Analyzer vacuum | <2x10-7 mbar |
| Substrate current | >5 x10-10 amps (Cu sample, total Cu signal at resolution > 4000) >1.5 x10-11 amps (SiO2 glass sample, using RF source) |
| Signal intensity stability | <3% RSD (Cu sample, resolution > 4000, 5 repeated measurements within 10 minutes) <5% RSD (Cu sample, resolution > 4000, 15 repeated measurements within 30 minutes) |
| Spectral peak stability | <30 ppm (Cu sample, resolution > 4000, 30-minute measurement of 63Cu) |
| Mass stability | <100ppm (12C to 181Ta) |
| Ion counting efficiency | >70% (relative to Faraday cup) |
| Abundance sensitivity | <200ppb (Cu sample, resolution >4000, 62Cu relative to 63Cu) |
| Internal repeatability | Major components < 3% RSD Minor components < 5% RSD Trace components < 10% RSD |
| External repeatability | Major components < 5% RSD Minor components < 10% RSD Trace components < 20% RSD |
Company introduction:
Mass Spectrometry Instruments Ltd (MSI) is a highly specialized company dedicated to the design of high-performance magnetic sector double-focusing mass spectrometers for both organic and inorganic analysis markets. It inherits the technology of Kratos Analytical, a pioneer in the introduction of commercial mass spectrometers in 1957. Since then, the demand for high-precision, high-resolution instruments has grown exponentially. At MSI, we are making significant progress in taking this technology to new levels through investment in new developments and applications.
