Noble Gas Isotope Laboratory



The laboratory has facilities for noble-gas analysis, consisting of ultrahigh vacuum purification system and furnace. The K-Ar age is determined by unspiked method (Ryu et al., 2013) for young rocks (e.g., Holocene volcanic rocks) and spiked method (Nagao et al., 1996; Feyssia et al., 2017) for relatively older rocks (0.1 to 100 Ma).


Noble gases Laboratory - Spherical Image - RICOH THETA

Noble Gas Laboratory
VG5400
Helix SFT

Technical Utilities

  • VG5400 (Micromass, UK)
  • Helix SFT (Thermo Scientific)
  • Cryogenic trap (stainless steel and charcoal)
  • Ultrahigh vacuum purification lines (10-9 torr) equipped with nonevaporable getters (St101, St172)
  • Gas extraction furnace (~1500 ˚C with Ta heater and Mo crucible)
  • Residual gas deterctor (Q-pole mass analyzer)

Analytical Capabilities

  • Determination of waters in rocks (H2O+ and H2O-) with precision 1% (1σ)
  • Determination of ferrous iron with precision 1% (1σ).