DEVICE FOR DETERMINING CONTENT OF ELEMENTS IN SURFACE LAYER OF SAMPLE Russian patent published in 2011 - IPC G01N23/222 

FIELD: physics.

SUBSTANCE: device for determining content of elements in surface layer of a sample has a neutron source, an evacuated measurement chamber with an input neutron guide and an illuminated sample in the said chamber, a gamma-ray detector outside the measurement chamber. The neutron source is a source of ultracold neutrons. The measurement chamber is connected to an intermediate chamber and has an output neutron guide connected to an ultracold neutron detector. There is a butterfly valve in the input neutron guide. The flow section of the intermediate chamber is covered by an output vacuum slide valve mounted on a rod with possibility of movement, and the illuminated sample is attached to the rod with possibility of movement from the intermediate chamber to the measurement chamber.

EFFECT: wide range of analysed samples, high reliability of determining content of elements in a sample.

3 cl, 1 dwg