Research School of Earth Sciences, The Australian National University, Canberra, Australia.
Thermo Fisher Scientific, Bremen, Germany.
J Am Soc Mass Spectrom. 2016 Dec;27(12):1937-1943. doi: 10.1007/s13361-016-1480-3. Epub 2016 Sep 15.
Performance of the Helix MC Plus noble gas mass spectrometer installed at the Australian National University (ANU) is reported. Results for sensitivity, mass discrimination and their linearity against partial pressure of noble gases, and mass resolution of the mass spectrometer are presented, and the results are compared with those of conventional noble gas mass spectrometers. The application of the five detectors on the Helix MC Plus in measuring various noble gas isotopes in multi-collector modes and the integration of the software drivers of peripheral hardware devices into the controlling program Qtegra of the mass spectrometer are discussed. High mass resolution (>1800) and mass resolving power (>8000) make this mass spectrometer unique in noble gas cosmo-geochemistry. It provides the capability to measure isobaric interference-free noble gas isotopes in multi-collector mode, significantly improves the accuracy to determine isotopic ratios, and greatly increases the efficiency of data acquisition. Graphical Abstract ᅟ.
报告了安装在澳大利亚国立大学（ANU）的 Helix MC Plus 惰性气体质谱仪的性能。介绍了该质谱仪的灵敏度、质量歧视及其对惰性气体分压的线性度以及质量分辨率的结果，并将结果与传统惰性气体质谱仪的结果进行了比较。讨论了在多收集器模式下使用 Helix MC Plus 上的五个探测器测量各种惰性气体同位素以及将外围硬件设备的软件驱动程序集成到质谱仪的 Qtegra 控制程序中的应用。高分辨率（>1800）和质量分辨能力（>8000）使该质谱仪在惰性气体宇宙地球化学中独具特色。它提供了在多收集器模式下测量无同量异位素干扰的惰性气体同位素的能力，显著提高了确定同位素比的准确性，并大大提高了数据采集效率。
