p45_003

# p45_003 - pion is m c 2 = 135 . 0 MeV. Hence, E = (135 . 0...

This preview shows page 1. Sign up to view the full content.

3. Conservation of momentum requires that the gamma ray particles move in opposite directions with momenta of the same magnitude. Since the magnitude p of the momentum of a gamma ray particle is related to its energy by p = E/c , the particles have the same energy E . Conservation of energy yields m π c 2 =2 E ,where m π is the mass of a neutral pion. According to Table 45-4, the rest energy of a neutral
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: pion is m c 2 = 135 . 0 MeV. Hence, E = (135 . 0 MeV) / 2 = 67 . 5 MeV. We use the result of Exercise 3 of Chapter 39 to obtain the wavelength of the gamma rays: = 1240 eV nm 67 . 5 10 6 eV = 1 . 84 10 5 nm = 18 . 4 fm ....
View Full Document

## This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

Ask a homework question - tutors are online