1. Nuclear Physics

2. The existence of the nucleus: Rutherford Experiment

4. Rutherford experiment

5. Empirical findings of properties of nuclei

6. Isotopes and Nuclides

8. Stability diagram nuclei

10. Binding energy per nucleon

11. Complexity ~ nuclear
is thy name

12. Models of the nucleus
Liquid drop model

14. Alpha particle model

15. Non-central force
Spectroscopic model
Problem: which potential ??

18. Decay Law: Half life
Blue Stable elements;   Green   Radioactive elements with very long-lived isotopes. Their half-live of over four million years confers them very small, if not negligible radioactivities;     
Yellow Radioactive elements that may present low health hazards. Their most stable isotopes have half-lives between 800 and years. Because of this, they usually have some commercial applications;      
Orange Radioactive elements that are known to pose high safety risks. Their most stable isotopes have half-lifes between one day and 103 years. Their radioactivities confers them little potential for commercial uses;      
Red Highly radioactive elements. Their most stable isotopes have half-lifes between one day and several minutes. They pose severe health risks. Few of them receive uses outside basic research;     
Purple  Extremely radioactive elements. Very little is known about these elements due to their extreme instability and radioactivity.

19. .
Penetration Depth
The energy of radiation is typically measured in MeV, mega electronvolt:
If a beam of photons with intensity I0 traverses a layer of material of thickness x, the intensity emerging from the layer is
where m is called the linear absorption coefficient. It is related to the cross section s for photon absorption by
where NA is Avogadro’s constant and r is the density of the material.

21. Radioactivity
a, b, g decay

25. Natural clocks:

26. 137Cs , 60Co – case studies in the advanced lab

28. Fusion and Fission

30. Fast breeder

32. The search for artificial elements

33. Radioactivity and Health
The number of radioactive nuclei of an isotope varies in radioactive decay according to
where N is the number of nuclei at t=0, N0 the remaining number at t, and l is the decay constant.
T1/2 is the half-life, the time from t=0 when half the original nuclei remain.
a, b, g decay
Units Gray [Gy] absorbed dose: energy deposited per unit mass
of medium [J/kg]
Sievert [Sv] risk from ionizing radiation
rad radiation absorbed dose
rem roentgen eq. mammal (to gauge bio effects)

34. Safety After low to moderate radiation poisoning [1-6 Gy]
within hours nausea and vomiting
diarrhea
possibly headache and fever
With increasing dose cognitive impairment
Mortality 5-100%; above 6 Gy > 50%
Primary dangers: (whole body exposure)
immunodeficiency
destruction of bone marrow
shortage of white blood cells

35. Weighting factors WR for equivalent dose: how dangerous are types of radiation?
Radiation Energy wR
x-ray, g-ray, e-, e+, m 1
n < 10 keV 5
< 100 keV 10
< 2 MeV 20
higher < 20
P > 2 MeV 2
a, fission fragments, heavy nuclei 20