《AN ATLAS OF TYPICAL EXPANSION CHAMBER PHOTOGRAPHS》

Natural radioactivity2

Properties of nuclear radiations:α-rays,protons,deuterons18

ρ-rays;the positron38

χ-rays and γ-rays63

Nuclear transmutations by charged particles,neutrons,nuclear fission,transmutations by γ-rays,particles of very high energy93

Artificial radioactivity140

Cosmic ray particles,cosmic ray showers154

List of tables and diagrams1

Diagram 1．The naturally radioactive families3

Table 1．Natural α-emitters7

Table 2．Natural β-emitters12

Diagram 2．Decay of RaC→RaC′→RaD17

Diagram 3．Range-energy relations for α-rays,protons,and deuterons19

Diagram 4．Specific ionisation versus range for single α-particles in air22

Table 3．Mean air equivalent for α-rays25

Diagram 5．Average charge of proton and α-particle as a function of their energy32

Diagram 6．Ho,energy,and velocity of electrons39

Diagram 7．Specific ionisation by β-rays41

Diagram 8．Passage through foils and back-scattering of β-rays53

Diagram 9．＂Practical range＂of β-rays55

Diagram 10．Mass attenuation coefficient for X-and γ-rays63

Table 4．K-absorption limits for a number of elements66

Diagram 11．Fluorescence yield in the K and L shell67

Diagram 12．Energy and angle relations in the COMPTON effect71

Diagram 13．Angular distribution of scattered quanta in the COMPTON effect77

Diagram 14．Energy distribution of recoil electrons79

Diagram 15．Cross section of pair production in aluminum and lead83

Diagram 16．Energy loss of fast electrons by ionieation and Bremsstrahlung84

Diagram 17．Internal conversion lines from CS13789

Diagram 18．Masses and energy levels of the Lightest nuclei93

Diagram 19．Transmutation scheme of 13Al27(α,p)14Si3097

Diagram 20．Scattering cross section of H,D and He107

Diagram 21．Decay schemes of some artificially radioactive isotopes(partly hypothetical)141

Diagram 22．β-spectrum of B12143

Diagram 23．β-spectrum of Cl38143

Diagram 24．Relative probability of K capture and positron decay145

Diagram 25．Specific ionisation of cosmic ray particles155

Table 5．Data of elementary particles160