ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The main portion of the HEAO A-l experiment consists of four large-area xenon-methane counters with a combined area of 6,800 cm2 and an effective energy range of 0.5-25 keV. The counters have a 1x4 collimator. The roll of the HEAO A-l causes a point source to be scanned by these modules in 10 s, ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/278436a0
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