Particles And Radiation Flashcards
1
Q
Specific charge
A
=Q÷m
Charge ÷ mass
2
Q
Minimum energy for pair production
A
Emin = 2E0
E0 : rest energy of one particle produced
3
Q
Minimum energy for annihilation
A
Emin = E0
E0: rest energy of one particle which was annihilated
4
Q
1eV
A
1eV = 1.6 × 10^-19 J
5
Q
Minimum amount of energy needed to release an electron from the surface of a metal (the work function)
A
Work function = Planck’s constant (6.63×10^-34) × f0 minimum frequency of EM radiation needed to release an electron from the surface of a metal
6
Q
Ek(max ) maximum kinetic energy of photoelectrons
A
= eVs
The potential difference required to stop the fastest moving electron in a photocell experiment
