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ok i need answers on two question:
1.What is this?
2.what is this used for?
url with exact answers will do i too but please try to answer first.
i hope that this gizmo was not yet in past gizmos.
[edited by: coconutz at 8:05 pm (utc) on Dec. 28, 2002]
Boron Neutron Cancer therapy?
Used to minimize the direct illumination of a neutron detector by placing it between a neutron source and the detector. This method allows for an accurate background determination, i.e., the scattering of neutrons from the floor, ceiling etc. into the neutron detector can be measured and subtracted off from the counts measured in the neutron detector without the Shadow Cone in place.
scott you win! congratulations!
btw, first i wanted to use Space Star Neutron Detector Array but i was afraid that it is too easy to guess...