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Table 4 Specifications and measured ranges of m/z for the QMS (Watmass) of the GAEA

From: The GAs Extraction and Analyses system (GAEA) for immediate extraction and measurements of volatiles in the Hayabusa2 sample container

Specification    
Filament Y2O3-Ir   
Emission current 2 mA   
Electron energy 70 eV   
SEM voltage 900 V   
Integration time 32 ms   
Mode SORB-AC a Scan time b m/z
Recipe 1. Peak scan close  ~ 120 s (~ 6 scan) Peak scan from 1 to 100
Recipe 2. Peak jump close  ~ 90 s Peak jump at 2, 3, 4, 14, 15, 16, 17, 18, 28, 29, 32, 34, 40, 44, 45, 46, 64, 66, 69, 78
Recipe 3. Peak scan open  ~ 90 s (~ 10 scan) Peak scan from 1 to 44
Recipe 4. Peak jump open  ~ 90 s Peak jump at 1, 2, 3, 4, 6, 12, 16, 18, 20, 21, 22, 24, 28, 29, 30, 32, 33, 34, 36, 38, 40, 44, 45, 46, 69, 78, 84, 132
Recipe 5. Peak scan   Optional Peak scan from 1 to 200
  1. A procedure plan used for the measurements of gases in the Hayabusa2 sample container
  2. Measurements are performed sequentially from Recipe 1 to Recipe 4 in each gas fraction
  3. Recipe 5 is also applied in the case where the gas amount is high
  4. aGases are measured without SORB-AC and then with SORB-AC by opening the valve
  5. bBasic scan time depends on the gas amount and composition