Cosmogenic nuclides and nuclear tracks in the chondrite Knyahinya

@inproceedings{Graf1990CosmogenicNA,
  title={Cosmogenic nuclides and nuclear tracks in the chondrite Knyahinya},
  author={Th. Graf and Peter Signer and Rainer Wieler and Ulrich Herpers and Rolf Sarafin and S. Vogt and Ch Fleni and Paul Pellas and Georges Bonani and Martin Suter and Willy Wolfli},
  year={1990}
}
Cosmic-ray produced He, Ne, Ar as well as 10Be, 26Al, 53Mn and nuclear tracks were determined in samples from known positions within the L5 chondrite Knyahinya. Our results show that Knyahinya experienced a single-stage exposure history as a meteoroid of approximately spherical shape. The inferred preatmospheric mass was about 1300–1400 kg, corresponding to a mean radius of 45 cm. Good agreement is observed between the preatmospheric shapes derived from cosmic-ray track densities and from… CONTINUE READING

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