Duncan L Drummond

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In May 2014, the Rosetta spacecraft is scheduled to rendezvous with the comet Churyumov-Gerasimenko ('67P'). One of the instruments on board the 'Lander' which will descend on to the surface of the comet is a miniaturised GC/MS system that incorporates an ion trap mass spectrometer, specially developed for isotope ratio analysis. This article describes the(More)
The index of refraction of hydrogen fluoride has been measured from 2.5 to 2.9 microm with a wavelength resolution of 40 A. Fringe shifts were measured using an incandescent light, a Mach Zehnder interferometer, and a quarter-meter monochromator. The hydrogen fluoride pressure varied from 20 to 120 T. Higher pressures would not be tolerated because of the(More)
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