Computer Science – Performance
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.3909t&link_type=abstract
American Astronomical Society, DPS meeting #41, #39.09
Computer Science
Performance
Scientific paper
Accurate knowledge of the optical properties of surface and atmospheric constituents is crucial to ensure the reliable interpretation of remotely observed planetary spectra.
A new facility has been developed at Oxford to enable the production of thin films for spectroscopic measurement at temperatures varying from 300K to 70K. An innovative method has been designed to deposit the films uniformly on to a cooled substrate. The facility is equipped to measure visible and infrared spectra from 600nm to 300µm. Preliminary measurements have been made using carbon dioxide to characterise the performance of the facility. Experiments later this year will measure the infra-red spectra of ammonia and ammonium hydrosulphide ice with a view to retrieving optical properties. These compounds are prevalent in the upper layers of Jupiter's cloud deck. Detailed knowledge of their optical properties at representative temperatures will therefore improve the accuracy of data from spectral measurements of the Jovian atmosphere.
Bowles Neil E.
Calcutt Simon B.
Howett J. A. C.
Irshad Ranah
Temple Jon
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