Calculation of characteristics of the albedo muon flux in the stratosphere

Problem of albedo muon flux formation in the stratosphere is considered. Calculation of energy and angular characteristics of albedo muon flux by geomagnetic cut-off rigidity R=1; 4.5; 15 GV within the altitude range of 20≤hμ≤50 km is carried out. Comparison of experimental and calculational results indicates their fair agreement. The calculation shows that degree of albedo muon flux anisotropy increases with muon energy increase and the flux value is comparable with direct albedo proton flux in the energy area exceeding 200 MeV. The maximum in the integral albedo muon flux is achieved at altitudes hμ ≅30 km