In situ produced 14C by cosmic ray muons in ablating Antarctic ice

Samples of a core (52 m) of ablating Antarctic ice were analysed for 14CO and 14CO2 by accelerator mass spectrometry. The data were compared with a 14C in situ production model that includes muon capture in addition to oxygen spallation by neutrons. The analysis reveals significant in situ 14C at de...

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Bibliographic Details
Main Authors: Kemp, W.J.M. van der, Alderliesten, C., Borg, K. van der, Jong, A.F.M. de, Lamers, R.A.N., Oerlemans, J., Thomassen, M., Wal, R.S.W. van de
Format: Article in Journal/Newspaper
Language:English
Published: 2002
Subjects:
Natuur- en Sterrenkunde
Antarctic
Antarc*
Online Access:https://dspace.library.uu.nl/handle/1874/21436
Description
Summary:Samples of a core (52 m) of ablating Antarctic ice were analysed for 14CO and 14CO2 by accelerator mass spectrometry. The data were compared with a 14C in situ production model that includes muon capture in addition to oxygen spallation by neutrons. The analysis reveals significant in situ 14C at depths below 10 m, which we attribute to 14C production by cosmic ray muons. The age of the ice was determined as 9.3±0.4 14C ka BP.

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