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名古屋大学年代測定資料研究センター・MAT-252における炭素・酸素の安定同位体組成測定について

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The stable isotopic composition of carbon dioxide can be measured for small amount samples with the mass spectrometer at Dating and Materials Research Center, Nagoya University, MAT-252 (Finnigan MAT Ltd.). So it is indispensable to obtain experimental information of the machine. This paper provides the basic experimental information of isotopic measurements. The experimental procedures for carbon and oxygen isotopic analysis of CO_2 with MAT-252 were developed following things; isotopic change of gas composition in a reservoir by capillary leak separation, pressure effect on isotopic ratios, minimum amount of CO_2 samples, the equilibrium time to get the capillary leak after the gas flow, cross mixing in ion source during the exchange of the change-over valves and other basic data for procedures.

タンデトロン加速器質量分析計業績報告 Summaries of Researches Using AMS 1996 (平成8)年度

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