Abstract: An analytical instrument. The analytical instrument includes of one or both of an ion trap or a collision cell. One or both of the ion trap or collision cell is filled with deuterium gas.

Abstract: A deuterium gas generator system. The deuterium gas generator system comprises an electrolysis cell and a palladium alloy purifier membrane having a surface area of not more than 10 square centimeters.

Abstract: A variable duty cycle ion source assembly is coupled to a continuous beam mass spectrometer. The duty cycle can be adjusted based on previous scan data or real time sampling of ion intensities during mass analysis. This provides the ability to control the total number of ions formed, mass analyzed and detected for each ion mass of interest. The frequency of the ion source can be sufficiently high (kHz range) so as to maintain accurate peak centroiding. The ion source assembly can be used for both electron ionization (EI) or chemical ionization (CI) modes of operation.

Abstract: Ions in a predefined narrow mass to charge ratio range are isolated in an ion trap by adjusting the field and using ejection frequency waveform(s). The ejection waveforms have frequency components in a first and a second dimension, and, are applied across electrodes aligned along a first and a second dimension. Thus the mass-to-charge ratio isolation window is controlled and has an improved resolution without increasing the number of frequency components.

Abstract: Ions in a predefined narrow mass to charge ratio range are isolated in an ion trap by adjusting the field and using ejection frequency waveform(s). Thus the mass-to-charge ratio isolation window is controlled and has an improved resolution without increasing the number of frequency components.

Abstract: A detector assembly has a current measuring device with a saturation threshold level, and a gain variation means. A signal is generated in response to the particles detected, a first data point corresponding to a peak of interest is acquired from the signal. If the first data point is near, at or above the saturation threshold level of the current measuring device, the gain of the gain variation means is adjusted such that the peak of interest in the signal is reduced in intensity.

Abstract: A variable duty cycle ion source assembly is coupled to a continuous beam mass spectrometer. The duty cycle can be adjusted based on previous scan data or real time sampling of ion intensities during mass analysis. This provides the ability to control the total number of ions formed, mass analyzed and detected for each ion mass of interest. The frequency of the ion source can be sufficiently high (kHz range) so as to maintain accurate peak centroiding. The ion source assembly can be used for both electron ionization (EI) or chemical ionization (CI) modes of operation.