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Table 2 Reduction factors of gases for measuring and collecting Hayabusa2 container gases using the GAEA

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

Description Reduction condition Fraction
Gases in the container after expanding to V-Gauge (V-Container/V-Container + V-FL + V-Gauge) 0.717
Gases kept in V-PQ for the QMS measurementa (V-PQ/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-PQ) 0.0428
Gases collected in a NT bottle (each of NT #1–#4)b (V-Container + V-FL + V-Gauge + V-1 + V-2/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-PQ) × (NTbottle/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-NTTP + 4* NTbottle + 4*P-NTbottle) 0.202
Gases collected in CR #1c (V-Container + V-FL + V-Gauge + V-1 + V-2/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-PQ) × (V-Gauge + V-1 + V-2 + V-NTTP/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-NTTP + 4* NTbottle + 4*P-NTbottle) × (CRbottle/V-Gauge + V-1 + V-2 + V-3 + V-NTTP + V-CRTP + CRbottle + P-CRbottle) 0.00736
Gases collected in CR #2c (V-Container + V-FL + V-Gauge + V-1 + V-2/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-PQ) × (V-Gauge + V-1 + V-2 + V-NTTP/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-NTTP + 4* NTbottle + 4*P-NTbottle) × (V-Gauge + V-1 + V-2 + V-3 + V-NTTP + V-CRTP/V-Gauge + V-1 + V-2 + V-3 + V-NTTP + V-CRTP + CRbottle + P-CRbottle) × (V-CRbottle/V-Gauge + V-1 + V-2 + V-3 + V-NTTP + V-CRTP + CRbottle + P-CRbottle) 0.00588
Gases collected in NT #6 V-Container + V-FL + V-Gauge + V-1 + V-2/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-PQ) × (V-Container + V-FL/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-NTTP + 4*NTbottle + 4*P-NTbottle) × (V-Container + V-FL + V-Gauge + V-1 + V-2/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-PQ) × (NTbottle/V-Container + V-FL + V-Gauge + V-1 + V-2 + V-3 + V-OP + NTbottle + P-NTbottle) 0.0339
  1. See Fig. 4 and Table 1 for the names and volumes
  2. Fractions are calculated using the volumes shown in Table 1
  3. aGases kept in V-PQ are reduced before introducing into the QMS if the gas pressure is too high
  4. bFraction of gases collected in each bottle of NT #1–#4
  5. cFraction of gases collected in CR #1 or CR #2 for the case assuming at normal temperature