Primordial comet mantle - Irradiation production of a stable, organic crust

Details Primordial comet mantle - Irradiation production of a stable, organic crust Primordial comet mantle - Irradiation production of a stable, organic crust

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...91..101s&link_type=abstract

Icarus (ISSN 0019-1035), vol. 91, May 1991, p. 101-104. ASI-supported research.

Mathematics

Probability

47

Comets, Cosmic Rays, Cosmochemistry, Planetary Crusts, Comet Rendezvous Asteroid Flyby Mission, Interstellar Matter, Refractory Materials

Scientific paper

The thickness and survivability of a cosmic ray-generated primordial comet refractory mantle, or 'crust', are presently predicted by laboratory data and corrected estimates of cosmic ray dose to be capable of surviving a new comet's entry into the inner solar system over numerous revolutions. It is suggested that, since this mantle may be as much as several meters deep, the probe apparatus of the projected CRAF and Rosetta spacecraft will have to be extended in order to reach the desired, unprocessed cometary material. As things stand, there is a high probability that these missions will sample cometary matter than has been heavily irradiated and reprocessed in the Oort cloud.

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