Particle Physics Flashcards
Define Isotope
An atom with the same number of protons and different number of neutrons
What is the charge on an electron?
-1.6 x 10-19 C
What is the charge on a proton?
+1.6 x 10-19 C
How do you find specific charge?
charge (in C) / mass (kg)
What are the units for specific charge?
C/kg
Below what distance is the strong force repulsive?
0.5 fm
Between what values is the strong force attractive
0.5 fm to 3-4 fm
What family of particles experience the strong force?
Hadrons (or Quarks)
What does an alpha particle consist of?
2 protons and 2 neutrons
What is a beta - particle?
A high speed electron
What is a beta + particle?
A high speed positron
What is the wave speed equation?
c = fλ
How do you calculate the energy of a photon?
E = hf
How do you calculate the energy of a photon if you only know it’s wavelength?
E = hc/λ
What is the exchange particle for Gravity
(BB)
Graviton