Non-relativistic particles travelling through a medium lose energy. The energy lost per unit length travelled in the medium, dE dx , is given by the formula: dE dx = − 0.288 mv2 ZM AM ln E 459.0IM which depends on the energy of the particle, E, the mass of the particle, m, the velocity of the particle, v, the atomic number of the medium, ZM, the atomic mass of the medium, AM, and the ionisation potential of the medium, IM. The name, ZM and AM values for several media are listed in the URL: http://www.hep.ucl.ac.uk/~markl/teaching/3c59/exam/materials.dat and IM is given by the formula : IM = 16 � 10−6Z0.9 M . The names and masses of the particles we will consider in this exercise are listed in the URL: http://www.hep.ucl.ac.uk/~markl/teaching/3c59/exam/particles.dat This file has the particle�s name and mass on each line. The URL: http://www.hep.ucl.ac.uk/~markl/teaching/3c59/exam/results.dat has a list of material names, particle names and particle energies (E). The particle�s energy, E, is related to the particles mass, m and velocity v, through E = 1 2 mv2. Using these three URLs, write appropriate classes for both the particle and the material that can be used to determine which entry in the results.dat file would result in the largest energy loss per unit length.
Thanks and Regards,<br />Nilesh<br />SCJP 1.4, SCWCD 1.4