Computer Science
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.321..336k&link_type=abstract
Nature (ISSN 0028-0836), vol. 321, May 15, 1986, p. 336, 337. BMFT-NASA-supported research.
Computer Science
196
Abundance, Computerized Simulation, Giotto Mission, Halley'S Comet, Interplanetary Dust, Mass Spectra, Carbon, Hydrogen, Mass Spectrometers, Nitrogen, Oxygen, Comets, Halley, Spacecraft Observations, Mission Description, Experiments, Composition, Dust, Particles, Giotto, Spectra, Particle Impact Analyser, Pia, Size, Abundance, Comparisons, Models, Hydrogen, Carbon, Oxygen, Nitrogen, Organic Material, Mass, Volume
Scientific paper
Mass spectra of cometary dust particles measured by the PIA dust particle analyzer aboard the Giotto spacecraft show some unexpected and striking features. First, small particles below 10 to the -14th g are much more abundant than anticipated by models. Second, most of the particles are rich in light elements such as H, C, N, and O, suggesting the validity of models that describe the cometary dust as including organic material. Third, the light elements specifically seem to have a low ratio of mass to volume. Three examples of original mass spectra showing typical compositions are given; these have been measured, and are compared with a computer-simulated mass spectrum.
Brownlee Don E.
Buchler K.
Clark Ben C.
Fechtig Hugo
Grün Eberhard
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