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Cosmic Ray laboratory of |
Neutron Monitor (Cosmic Ray Observations) |
|
For recording the CR (Cosmic Rays) neutron
component at Irkutsk,
neutron monitor NM-64
is used, which is an installation with 18 two-meter proportional counters
filled with BF3 (boron trifluoride gas) in which
the B10 isotope has been enriched to >90 per cent of the total boron.
The counters surrounded by the moderating material (polyethylene) and
generating material (lead). A total weight of the installation is more than 30
tons. The neutron monitor is located at 475m above sea level.