Kimikazu Sasa

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Dependence of nitrogen content on (a) partial pressure of nitrogen PN2 (substrate temperature TS = 800 ºC, deposition rate r ~ 0.04 h/nm), (b) r (PN2 = 10 −5 Torr, TS = 800 ºC), and (c) TS (PN2 = 10 −5 Torr, r ~ 0.04 h/nm). In this report, we expressed the chemical composition of the films as SrTaO3−xNx despite the possible deviation of the total anion(More)
This study investigates the potential of 36 Cl in tracing young groundwater with residence times of up to ~50 years. Groundwater samples were obtained from 16 irrigation wells in paddy fields located within an upland–lowland system in the Yoro River basin, Central Japan. The 36 Cl/Cl ratios were in the range of 17 to 362  10 −15. Among the samples with(More)
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