Using a fast time-of-flight mass spectrometer, a complete set of ions are detected for each impact, from a mass range of 1 (atomic hydrogen) up to a few thousand atomic mass units, encompassing all รขโ‚ฌยฆ For the first time mass spectra of negative ions are available for cometary particles. Unlike the spectra from interstellar particles they show only a few lines indicating small dust particles as their source.

The cometary and interstellar dust analyzer at comet 81p/wild 2 tions suggest that the sheets of ejected particles are several km thick at ~250 km from the nucleus and that dust. The cida instrument is a mass spectrometer, which separates ions' masses by comparing differences in their flight times. The operating principle of the instrument is the following: When a dust particle hits รขโ‚ฌยฆ The arrival times of the ions are digitized, and the mass spectra of the secondary ions are calculated from these time-of-flight spectra. Through the instrument commissioning, cosima took the very first รขโ‚ฌยฆ Using a fast time-of-flight mass spectrometer, a complete set of ions was detected for each impact, from a mass range of 1 (atomic hydrogen) up to a few thousand atomic mass units, encompassing all รขโ‚ฌยฆ

The arrival times of the ions are digitized, and the mass spectra of the secondary ions are calculated from these time-of-flight spectra. Through the instrument commissioning, cosima took the very first รขโ‚ฌยฆ Using a fast time-of-flight mass spectrometer, a complete set of ions was detected for each impact, from a mass range of 1 (atomic hydrogen) up to a few thousand atomic mass units, encompassing all รขโ‚ฌยฆ

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