Please explain answers, show all formulas used, and label units. A photon in the
ID: 2303368 • Letter: P
Question
Please explain answers, show all formulas used, and label units.
A photon in the gama ray range, of wavelength 1.0 pm, produces an electron and a positron via pair production. In this process the gamma ray disappears and the electron and positron appear.
One of the particles (positron or electron) is traveling along the -x direction and a magnetic field is applied along the +y direction. The particles path bends towards the +z direction, i.e. there is a magnetic force along the +z direction. Can you tell which particle it is, if so what particle? Explain. Use the right-handed coordinate system shown.
Explanation / Answer
Direction of motion=-i
Direction of field=+j
Force due to magnetic field= qVxB=q*(-ixj)=-qk
As direction is +k, qmust be