a gamma ray (γ) Describe how in beta emission a – electromagnetic radiation neutron decays into a proton and from the nucleus. an electron, with the electron then being ejected from the nucleus at a neutron (n) high speed. Describe gamma rays as being part of the electromagnetic spectrum as well as a type of nuclear radiation. Describe how a neutron can be emitted from a nucleus. 6.4.2.1 The penetration of Properties of alpha particles, 0.4 Which type of radiation is the Demonstrate the alpha, beta and beta particles and gamma most dangerous? penetration of alpha, gamma radiation rays limited to their beta and gamma Where do radioactive sources through different penetration through materials radiation. Link the come from? materials. and their range in air. penetration of each Draw a diagram to illustrate the type of radiation to the nature of the radiation penetration of the different types and the uses of the of nuclear radiation. radioactive sources. Evaluate the use of different Plan an experiment to shielding materials for use when determine the type of handling radioactive sources when supplied with relevant data. radiation emitted by an unknown radioactive Explain why gamma sources are source. Produce a risk usually the most harmful when assessment for this outside the body and alpha are experiment. the most dangerous when inside the body in terms of penetration of the radiation.
a gamma ray (γ) – electromagnetic radiation from the nucleus. a neutron (n) Describe how in beta emission a neutron decays into a proton and an electron, with the electron then being ejected from the nucleus at high speed. Describe gamma rays as being part of the electromagnetic spectrum as well as a type of nuclear radiation. Describe how a neutron can be emitted from a nucleus. 6.4.2.1 The penetration of alpha, beta and gamma radiation through different materials. Properties of alpha particles, beta particles and gamma rays limited to their penetration through materials and their range in air. 0.4 Which type of radiation is the most dangerous? Where do radioactive sources come from? Draw a diagram to illustrate the penetration of the different types of nuclear radiation. Evaluate the use of different shielding materials for use when handling radioactive sources when supplied with relevant data. Explain why gamma sources are usually the most harmful when outside the body and alpha are the most dangerous when inside the body in terms of penetration of the radiation. Demonstrate the penetration of alpha, beta and gamma radiation. Link the penetration of each type of radiation to the nature of the radiation and the uses of the radioactive sources. Plan an experiment to determine the type of radiation emitted by an unknown radioactive source. Produce a risk assessment for this experiment.
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