Recent content by jinn

first of all my understanding of scattering is shamefully low so please keep in mind... σdif. = (z12*z22) / 16Tα2 * 1/ sin4(ϑ/2) dΩ= 2πsinϑdϑ σR=∫σdif dϑ σdif = dσ/dΩ and the integral borders are 40° and 41° now those 105 = ndσr ? where d is the thickness and n = densiti times NA/M ?

Homework Statement Onto an Aluminium 50μm thick plate, we send a beam of alpha particles with unknown kinetic energy. the cross section of the beam is 2cm2, density 1013 / scm2 . Whats the kinetic energy of the particles if every second we sense 105 scattered particles between the angles 40°...