[en] A model for theoretical determination of the neutron detection efficiency of organic solid state track detectors without external radiator is described. It includes computation of both the spectra of the charged particles produced by neutron-induced nuclear reactions within the detector and the quantities physically characterizing the charged particles. Etchability of the latent tracks is ascertained by appropriate criteria. The subsequent simulation of the etching process results in etch pit distributions differing in diameter and depth of the pits. These distribution functions are the input to the description of the readout process, which leads to the characterization of the underlying physical effect. The individual steps of computation are carried out for cellulose triacetate detectors read out by optical microscope. A comparison is made of the computed results with experimental ones. (author)