ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The experiments were performed with a 20-cm-, 60 sector single focusing mass spectrometer, equipped with a secondary electron multiplier. The general arrangement was that described previously10, except that differential pumping between the Knudsen cell and the ionization source compartments was ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/1931280a0
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