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A Ratio He/Ar & N_2/Ar Mass Spectrometer for Monitoring EarthquakeJ. Journal of Chinese Mass Spectrometry Society, 1991, 12(1): 35-35.
Citation: A Ratio He/Ar & N_2/Ar Mass Spectrometer for Monitoring EarthquakeJ. Journal of Chinese Mass Spectrometry Society, 1991, 12(1): 35-35.
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A Ratio He/Ar & N_2/Ar Mass Spectrometer for Monitoring Earthquake

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  • A new special mass spectrometer for measuring He/Ar and N_2/Ar ratio of lithosphere gases has been made for monitoring earthquake. Its precision is ± 5%, the sensitivity is 2ppb.
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