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- Title
Conceptual Design of an In Situ K-Ar Isochron Dating Instrument for Future Mars Rover Missions.
- Authors
Yuichiro CHO; Shingo KAMEDA; Yayoi N. MIURA; Yoshifumi SAITO; Shoichiro YOKOT; Satoshi KASAHARA; Ryuji OKAZAKI; Kazuo YOSHIOKA; Kazuo SHIBASAKI; Takahiro OISHI; Seiji SUGITA
- Abstract
Age is one of the most important observables in planetary science. Although a sample return mission will provide accurate radiometric age measurements, it may not be launched very often because of its high cost. Thus, in situ radiometric age measurements with a one-way landing mission is very important. We are developing an on-site K-Ar isochron dating instrument for such a mission. This instrument is intended to measure K and Ar abundances with laser-induced breakdown spectroscopy and noble gas mass spectrometry, respectively. In this study, we propose an in situ dating package using mostly flight-equivalent components and a small number of components currently under development by our team. The geochronology instrument suite will contain a pulse laser, a spectrometer, a re-sealable vacuum chamber, a time-of-flight mass spectrometer, and a sample handling system using parallel link arms. Our assessment estimates that such an in situ geochronology package for measuring K-Ar crystallization age with 10-15% of accuracy for rocks with 3 Ga of age would be approximately 240 mm × 240 mm × 400 mm in size and 12.5 kg in mass.
- Subjects
MARS rovers; POTASSIUM-argon dating; SPACE flight; CONCEPTUAL design; TIME-of-flight mass spectrometry
- Publication
Transactions of the Japan Society of Aeronautical & Space Sciences, Aerospace Technology Japan, 2016, Vol 14, Issue ists 30, p89
- ISSN
1884-0485
- Publication type
Article