[填空题]
What is the ratio of the kinetic energies for azz 7 2stmhjljzt .x0w)dd3/( xn alpha par c2d9xgpm;a 0iticle and a beta particle if both make tracks with the same radius of curvature in a magnetic field, orie acix2m;90gpdnted perpendicular to the paths of the particles. $T_{\frac{1}{2}}$
