Pii: S0273-1177(97)00945-9
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چکیده
The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) will answer outstanding questions concerning the main objectives of the mission. To accomplish the very demanding objectives, ROSINA will have unprecedented capabilities, including: very wide mass range from 1 amu to >300 amu; very high mass resolution (ability to resolve CO from N2 and 13C from 12CH); very wide dynamic range and high sensitivity; the ability to determine cometary gas and ion flow velocities and temperatures. {)1998 COSPAR. Published by Elsevier Science Ltd. INTRODUCTION The international Rosetta comet rendezvous mission represents an extraordinary oppommity to perform a detailed investigation of a primitive object in our solar system. As part of the core payload for this mission, the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) proposed here will answer outstanding questions concerning the main objectives of the mission. The primary measurement objective of the spectrometer is: To determine the elemental, isotopic and molecular composition of the atmospheres and ionospheres of comets as well as the temperature and bulk velocity of the gas and ions and the homogenous and inhomogenous reactions of gas and ions in the dusty cometary atmosphere and ionosphere. In determining the composition of the atmospheres and ionospheres of comets, the following prime scientific objectives, also defined by the Rosetta Science Definition Team will be achieved: • To determine the global molecular, elemental, and isotopic composition and the physical, chemical and morphological character of the cometary nucleus. • To determine the processes by which the dusty cometary atmosphere and ionosphere are formed
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تاریخ انتشار 2005