Describe radioactivity and its characteristics such as half life and decay rate 3.
Apply and solve day life problem regarding to half life and rate of decay of radioactive source 4.
For example, in 1991, two hikers discovered a mummified man, preserved for centuries in the ice on an alpine mountain.
Later called Ötzi the Iceman, small samples from his body were carbon dated by scientists.
Thus, the nuclear decay is independent of the past history of a sample.
ii) Component deflected leftward is the positively charged particles (α) iii) Component deflected rightward is the negatively charged particles (β-).
After three half-lives, half of before have decayed and N0/8 are left.
In general, after n half-lives, the number of radioactive nuclei remaining is N0/2n.
Tel 6 Fax 6 URL: PPH0105 Modern Physics and Thermodynamics Course Outline 5.1 5.2 Atomic and Mass Number 5.1.1 Isotopes Radioactivity 5.2.1 Type of Radioactivity 5.2.2 Exponential Decay Equation 5.2.3 Decay Rate 5.2.4 Half-life Decay Process 5.3.1 Alpha Decay 5.3.2 Beta Decay 5.3.3 Gamma Decay Application 5.4.1 Carbon Dating 5.4.2 Medicine Nucleus 5.5.1 Rutherford’s Alpha Scattering Experiment 5.5.2 Proton 5.5.3 Neutron Nuclear Reaction 5.6.1 Einstein’s Equation 5.6.2 Binding Energy 5.6.3 Fission 5.6.4 Fusion 5.6.5 Chain Reaction 5.3 5.4 5.5 5.6 Upon completion of this chapter, you should be able to: 1.
Define and differentiate proton, electron, neutron and nucleon 2.