Difference between alpha and beta rays
|
Alpha rays |
Beta rays |
|
Mass |
|
| The mass of earth -particle is nearly four times the mass of the hydrogen nucleus. | Their mass is small, so they are easily scattered by the nuclei of atoms. |
|
Charge |
|
| The charge on -particle is positive. | The charge on -particle is negative. |
|
Kinetic energy |
|
| The kinetic energy of -rays is greater than that of -rays. | The kinetic energy of -rays is less than that of -rays. |
|
Penetration power |
|
| Their penetration power is very small. | Their penetration power is greater than -rays |
|
Ionization ability |
|
| The ionization power of-rays is very large. | Their ionization power of -rays is very small. |
|
Velocity |
|
| The velocity of -raysis from 1.4 x107 to 1.7 x m/s | The velocity of -rays is from 9 x 107 m/s to 27 x 107 m/s |
