Laboratory simulations of PH3 photolysis in the atmospheres of Jupiter and Saturn

Details Laboratory simulations of PH3 photolysis in the atmospheres of Jupiter and Saturn Laboratory simulations of PH3 photolysis in the atmospheres of Jupiter and Saturn

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...62..415f&link_type=abstract

Icarus (ISSN 0019-1035), vol. 62, June 1985, p. 415-424.

Computer Science

9

Atmospheric Chemistry, Jupiter Atmosphere, Phosphines, Photolysis, Saturn Atmosphere, Ammonia, Hydrocarbons, Pressure Effects, Temperature Effects, Wavelengths, Planets, Jupiter, Saturn, Laboratory Studies, Simulations, Phosphine, Photolysis, Atmosphere, Formation, Production Rates, Thermal Effects, Temperature, Ammonia, Phosphorous, Photochemistry, Ultraviolet, Wavelengths, Pressure, Particles, Condensation

Scientific paper

The effects of pressure, temperature, light wavelength and intensity, and components of the atmosphere of the Jovian planets on the photolysis of PH3 were experimentally studied. The products of the photolysis, P2H4 and red phosphorus, exhibited little variation when the irradiation experiments were performed under conditions prevalent in Jupiter's atmosphere. No quenching of PH2 radicals by the levels of hydrocarbons present in the Jovian atmosphere was noted. The high partial pressure of hydrogen present on Jupiter should have no effect on the course of the photolysis. The low temperatures on Jupiter and Saturn may result in some condensation of P2H4, but P2H4 had sufficient vapor pressure in the experimental studies at 157 K to be slowly converted to red phosphorus. The products of PH3 photolysis were the same whether a 147, 184.9, or 206.2 nm monochromatic light source or a xenon lamp with a broad spectral output was used.

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