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Problems Related to Interplanetary Matter (1961) / Chapter Skim
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XENON IN STONE METEORITES
Pages 9-14

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From page 9...
... No outgassing of the crucible was included in the procedure; the extraction system is being redesigned in order to make it possible to include such a step. TABLE 1 Anomalous Components of Meteoritic Xenon (Percent Abundance)
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From page 10...
... has treated the problem by normalizing to Xe130, which is a shielded isotope and therefore should be unaffected by fission, and by suggesting that neutron-induced fission or fission of extinct transuranic elements such as Pu244 could have accounted for most of the observed differences between the Earth's atmosphere and the meteoritic Xe. [Kuroda's idea is that the U/Xe ratio for the Earth is higher than for the meteorites, so that atmospheric xenon has been enriched in those isotopes of Xe which are fission products -- especially by spontaneous fission of Pu244.
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From page 11...
... Data obtained by other workers at Heidelberg and Minnesota are also included. The ratios sometimes display considerable variability from one sample to another of the same meteorite, which may be due to variance in the blank, or to real variations among samples [the iodine results reported by Goles for some of these meteorites also display large variance among different aliquots]
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From page 12...
... The profiles of primordial noble gases in stone meteorites are compared with cosmic (SuessUrey) and atmospheric noble gases.
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From page 13...
... -- KA P0ETA ~l -4 1 -5 L ABEE -6 ! •• a,' -7 1 -8 u -9 _r 1 -- -10 -1 1 He A Xe He A Xe He A Xe He A Xe Ne Kr Ne Kr Ne Kr Ne Kr ATM0SPHERE He A Xe Ne Kr Figure 1.
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From page 14...
... Z fur Naturfor.
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Key Terms

  • noble gases
  • stone meteorites
  • spontaneous fission
  • terrestrial component
  • experimental error

  • atmospheric xenon
  • atmospheric noble
  • total meteoritic
  • total amounts
  • primordial noble

  • display considerable
  • carbonaceous chondrite
  • meteoritic xenon
  • dial noble
  • extinct transuranic

  • terrestrial composition
  • mass fractionation
  • transuranic spontaneous
  • ratios sometimes
  • potassium analyses

  • fission products
  • positive results
  • yield curve
  • greatly enriched
  • results reported

  • fractionation effect
  • sometimes display
  • mighei orgueil
  • cool stars
  • scintillation counter


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