Symmetric elastic and spin-flip low-energy collisions of the hydrogen-isotope mesic atoms in the adiabatic hyperspherical approach

The reduced adiabatic hyperspherical (RAHS) basis suggested previously is used to Calculate elastic and spin-flip cross sections in the processes (amu)(F) + a, (amu)(F') + a, a = (p, d, t), for collision energies 10(-3) less than or equal to epsilon less than or equal to 102 eV The rapid convergence of the method is demonstrated: to achieve an accuracy of similar or equal to1% in the calculated cross sections, it is sufficient to use N less than or equal to 10 of the basis RAHS functions. The comparison of the obtained results with the previous ones is presented. (C) 2004 MAIK "Nauka/lnterperiodica".