Clathrate hydrate formation in amorphous cometary ice analogs in vacuo.

@article{Blake1991ClathrateHF,
  title={Clathrate hydrate formation in amorphous cometary ice analogs in vacuo.},
  author={David F Blake and Louis J. Allamandola and Scott A. Sandford and Douglas M. Hudgins and Friedemann T. Freund},
  journal={Science},
  year={1991},
  volume={254},
  pages={548-51}
}
The presence of clathrate hydrates in cometary ice has been suggested to account for anomalous gas release at large radial distances from the sun as well as the retention of volatiles in comets to elevated temperatures. However, how clathrate hydrates can form in low-pressure environments, such as in cold interstellar molecular clouds, in the outer reaches of the early solar nebula, or in cometary ices, has been poorly understood. Experiments performed with the use of a modified electron… CONTINUE READING

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