ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The abundance of 3He is derived from observations of the 8.665-GHz (3.46-cm) hyperfine line of3He+. From the ground, this is the only way to determine 3He abundances outside the Solar System in normal situations: that is, in the presence of a much larger abundance of4He (ref. 6). ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/355618a0
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