[en] The experiments on search for the conversion electrons emitted in the decay of spontaneously fissioning isomers ²³⁸U, ²³⁹Pu, ²⁴¹Pu, ²⁴⁰Am, ²⁴¹Am, ²⁴²Am, ²⁴³Am produced in the reaction (γ, γ'), (γ, n), (n, n'), (n, 2n) are described. The electron spectra have been measured using a high-resistance p-silicon detector located inside the magnetic coil. The conversion lines have been identified over their half-life and the distance between the K-, L- and M-lines. The conversion lines referred to the isomer state discharge have been observed in ²³⁸U nucleus