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

Miura, Yayoi N.; Okazaki, Ryuji; Takano, Yoshinori; Sakamoto, Kanako; Tachibana, Shogo; Yamada, Keita; Sakai, Saburo; Sawada, Hirotaka

doi:10.1186/s40623-022-01638-x

Earth, Planets and Space

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 measurement^a	(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 #1^c	(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 #2^c	(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 + 4NTbottle + 4P-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

See Fig. 4 and Table 1 for the names and volumes
Fractions are calculated using the volumes shown in Table 1
^aGases kept in V-PQ are reduced before introducing into the QMS if the gas pressure is too high
^bFraction of gases collected in each bottle of NT #1–#4
^cFraction of gases collected in CR #1 or CR #2 for the case assuming at normal temperature

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