3He,20,21,22Ne,14C,10Be,26Al, and36Cl in magnetic fractions of cosmic dust from Greenland and Antarctica

Autor:	Colin Maden, Kyeong Ja Kim, Rainer Wieler, Kurt Marti, Sheng Xu, Stewart P.H.T. Freeman, D. Lal, S. Taylor, A. J. T. Jull, C. Schnabel, Robert C. Finkel, A. Grimberg, L. Vacher, L. R. McHargue
Rok vydání:	2007
Předmět:	Cosmic ray spallation Radionuclide Solar wind Geophysics Space and Planetary Science Primordial nuclide Cosmogenic nuclide Magnetic fraction Geology Astrobiology Cosmic dust
Zdroj:	Meteoritics & Planetary Science. 42:1831-1840
ISSN:	1945-5100 1086-9379
Popis:	We report on studies of the concentrations of cosmogenic nuclides in the magnetic fraction of cosmic dust particles recovered from the South Pole Water Well (SPWW) and from Greenland. Our results confirm that cosmic dust material from these locations contains measurable amounts of cosmogenic nuclides.The Antarctic particles (and possibly those from Greenland as well) also contain minor amounts of solar Ne. Concentrations of cosmogenic nuclides are consistent with irradiation of this material as small objects in space, with exposure ages similar to the expected Poynting-Robertson (P-R) lifetimes of 50-200 kyr for particles 25-100 μm in size.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7d9b10f6cc7ceed879ef6f756e758403 https://doi.org/10.1111/j.1945-5100.2007.tb00541.x Zobrazit plný text záznamu Plný text