Atomic Structure

Atomic Structure

1. Isotopes

2. Particle Model of Matter

   • John Dalton, 19th: Atoms described as solid spheres
   • JJ Thompson, 1897: plum pudding
   • James Chadwick, 1940: Neutrons in the nucleus
   • Niels Bohr, 1911: electrons in shells orbitting the nucleus
   • Ernest Rutherford, 1909: Alpha Scattering method, mass concentrated at centre

3. Ionising Radiation

4. Irradiation

5. Half Life

6. Contamination

7. Decay

8. Background Radiation

9. Fission

10. Fusion

    • joining together smaller radioactive nuclei
    • a high temperature is

11. Radiotherapy

    • High does of radiation can kill tumours
    • Killing the tumerous cells at the cost of the patient feeling ill is an even trade