A large-radius high-mass-resolution multiple-collector isotope ratio mass spectrometer for analysis of rare isotopologues of O2, N2, CH4 and other gases

- A new large-radius high-mass resolution gas-source isotope ratio mass spectrometer is described.
- The instrument affords a mass resolving power of over 60,000.
- Measurements of rare isotopologues of gases, including CH4, N2 and O2 are accessible with the new instrument.
- Separation of 13CH3D and 12CH2D2 is highlighted.