SECONDARY PROTONS IN THE ATMOSPHERE AT DIFFERENT LATITUDES

We present a semiempirical method to study the Production and propagat ion of atmospheric secondary protons with energy > 100 Mev, moving in the vertical direction. The derived production functions are fitted by the least-square method for the only previously published splash (SP) and return (RE) albedos observed data using the same instrument and m easurement sites. The closed agreements between the measurement data a nd the calculations over a wide range of atmospheric depths lead to a possible extension of the method for other latitudes. The spectra of S P and RE ed earlier intensities versus the geomagnetic cut-off reveal similar behaviour as assumed earlier by the theory for those component s in the Earth's magnetic field.