Improved apparatus for measurement of the cosmicray neutron background.
1961
R GRISMORE, and
O J STEINGRABER, and
B G OLTMAN, and
L D MARINELLI
UI
MeSH Term
Description
Entries
D009502
Neutrons
Electrically neutral elementary particles found in all atomic nuclei except light hydrogen; the mass is equal to that of the proton and electron combined and they are unstable when isolated from the nucleus, undergoing beta decay. Slow, thermal, epithermal, and fast neutrons refer to the energy levels with which the neutrons are ejected from heavier nuclei during their decay.
Neutron
D003359
Cosmic Radiation
High-energy radiation or particles from extraterrestrial space that strike the earth, its atmosphere, or spacecraft and may create secondary radiation as a result of collisions with the atmosphere or spacecraft.