Detection of neutrons and $\gamma$-quanta under laboratory conditions and their separation by the scintillation pulse shape in CsI(Tl)

Atmospheric neutrons and $\gamma$-quanta have been recorded separately under laboratory conditions with the aid of a CsI(Tl) scintillation crystal. The secondary charged products of interaction between neutrons and $\gamma$-quanta and the crystal material were identified by pulse shape in CsI(Tl). This technique allows one to detect a neutron flux (with energies $E_n>20$ MeV) of about $\sim 10^{-3} particles\cdot см^{-2}s^{-1}$ against a background of a $\gamma$-radiation flux which is an order of magnitude higher.