Autonomous Light-Weight Integrated Direct Sampling Mass ...
Autonomous Light-Weight Integrated Direct Sampling Mass ...
Autonomous Light-Weight Integrated Direct Sampling Mass ...
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12<br />
Glow Discharge Electron Ionization (GDEI)<br />
• Ions are generated via EI with electrons made using a GDEI source shown in<br />
Figure 1.<br />
• The GDEI source is more rugged than traditional filaments and therefore more<br />
amenable for the application.<br />
anode<br />
Glow Discharge EI<br />
Proprietary – do not distribute or copy<br />
N 2<br />
cathode<br />
•Figure 1. GDEI source.<br />
•Figure 2. Toluene mass spectra.<br />
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