ANALYZING INDIVIDUAL PRESOLAR GRAINS WITH CHARISMA

dc.contributor.author	Savina M.R.
dc.contributor.author	Pellin M.J.
dc.contributor.author	Tripa C.E.
dc.contributor.author	Veryovkin I.V.
dc.contributor.author	Calaway W.F.
dc.contributor.author	Davis A.M.
dc.date.accessioned	2021-12-28T06:33:25Z
dc.date.available	2021-12-28T06:33:25Z
dc.date.issued	2003
dc.identifier	https://www.elibrary.ru/item.asp?id=5054763
dc.identifier.citation	Geochimica et Cosmochimica Acta, 2003, 67, 17, 3215-3225
dc.identifier.issn	0016-7037
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/33891
dc.description.abstract	Isotopic analysis of heavy elements in individual stardust grains is important in testing and constraining theories of stellar nucleosynthesis. These analyses are challenging in that the grains are very small, the largest being perhaps a few microns in diameter, and contain only trace concentrations of heavy elements, generally on the order of ppm. In addition, isotopic analysis requires the suppression of isobaric interferences. We describe a unique instrument, based on resonant ionization mass spectrometry, that has successfully characterized such grains for the past several years, and report on some recent upgrades that significantly enhance the instrumental capabilities. The fundamental principles and operational details are discussed, along with illustrative results and plans for future modifications.
dc.title	ANALYZING INDIVIDUAL PRESOLAR GRAINS WITH CHARISMA
dc.type	Статья

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