  Neutron reflectometry is a method for measuring of the spatial dependence
(profile) of the potential interaction between neutron and medium. At interface
of media the interaction potential is the sum of the elements potentials. For
definition of potentials of separate elements (isotopes) a secondary radiation
is recorded. Recording channels of secondary radiation are created on
spectrometer REMUR at pulsed reactor IBR-2 in Dubna (Russia). The results for
testing of the channels are reported and perspectives of reflectometry with
registration of secondary radiation are discussed
