Lateral distribution of electrons in air showers

We investigate the lateral distribution of electrons in extensive air showe rs generated by 10(5) divided by 10(9) GeV protons. It was found that the l ateral distribution function in extensive air showers contains the same inv ariant part as the one in a pure electromagnetic cascade. This scaling prop erty is poorly sensitive to the variation of basic. parameters of the hadro n-nucleus interactions model. We also report on some initial results obtain ed for the description of the transition effect of shower particles within scintillators of different thickness.