### Alpha particle

Alpha fragment $$\alpha$$ - is a helium nucleus, 2 protons and two neutrons. It has a huge mass, moment-g.commpared to other ionising radiations, and also a strong positive charge.

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### Beta particle

Beta fragment $$\beta$$ - is a rapid moving electron. It has a very tiny mass and a an unfavorable charge.

### Gamma ray

Gamma beam $$\gamma$$ - is a high-energy electromagnetic wave. Gamma light ray are resulted in by alters within the nucleus. Lock are part of the electromagnetic spectrum and so travel at the speed of light. They have actually no mass and also no charge.

## Penetrating power

Each type of radiation has a different capacity to permeate materials. The material is said to have took in the radiation.

The power of the 3 radiations is took in by the material through i beg your pardon the radiation passes. The amount of energy which is took in depends on the form of radiation and the form of the absorbing material.

Beta radiation is more penetrating than alpha radiation. It have the right to pass through the skin, however it is absorbed by a few centimetres of body organization or a couple of millimetres the aluminium.Gamma radiation is the many penetrating the the 3 radiations. The can conveniently penetrate body tissue. It calls for several centimetres of lead or around 1 metre the moment-g.comncrete come absorb it.The table below shows the properties of each kind of ionising radiationRadiationRange (cm)Ionising powerCan pass with paper?Can pass v 5mm of aluminiumCan pass v 5cm the lead?Electrical ar deflection
Alpha3-5Highly ionisingNoNoNoDeflected towards an adverse plate