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Spallation systematics

Hohenberg CM, Marti K, Podosek FA, Reedy RC, Shirck JR (1978) Comparisons between observed and predicted cosmogenic noble gases in lunar samples. Proc Lrrrrar Planet Sci Conf 9 2311-2344 Hohenberg CM, Hudson B, Kermedy BM, Podosek FA (1981) Xenon spallation systematics in Angra dos Reis. Geochim Cosmochim Acta 45 1909-1915... [Pg.165]

The Kr-Kr technique was proposed by Marti (1967). Cosmogenic Kr is mainly produced from the target elements Rb, Sr, Y, and Zr. Kr has a half-life of 229,000 yrs. Marti and Lugmair (1971) observed that the isotopic ratios of cosmogenic Kr vary systematically in Apollo 12 lunar rocks, due to variable shielding. They observed the following relations (all Kr concentrations or isotopic ratios refer to the spallation Kr component) ... [Pg.138]

See other pages where Spallation systematics is mentioned: [Pg.135]    [Pg.140]    [Pg.138]    [Pg.135]    [Pg.140]    [Pg.138]    [Pg.338]    [Pg.135]    [Pg.140]    [Pg.40]    [Pg.86]    [Pg.292]    [Pg.287]    [Pg.4512]    [Pg.322]    [Pg.154]    [Pg.4511]    [Pg.100]    [Pg.1947]    [Pg.115]   
See also in sourсe #XX -- [ Pg.130 ]



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Spallation

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