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IONISING RADIATION
¨EM waves are also classified according to their ability to ionise a material in their path ¨All waves up to light waves in the visible spectrum are non-ionising waves or radiation ¨All waves from ultraviolet to g-rays are ionising radiation. Ionisation only occurs if the radiation has sufficient intensity or power. Low power exposure over a long period of time can cause some damage ¨An ionising wave such as ultraviolet, X-rays or g-rays at sufficient intensity can knock electrons off the orbit of molecules in a material ¨The material is called ionised or charged
NON-IONISING RADIATION ¨Microwave energy is weaker in a material than light. It can not ionise molecules in its path. It produces heat in materials if the molecules are polar so that they can be rotated to and fro with every wave cycle ¨This is because microwaves are alternating current just like AC voltage. The polar molecules try to follow the polarity of the microwaves at a fast rate ¨If there is resistance to this cyclic rotation, heat will be generated. This heating is immediate and volumetric
Processing with high power microwaves, supply of microwave circulators, supply of microwave directional couplers, supply of high power impedance analysers
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