Beta particle | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-08

This is an audio version of the Wikipedia Article:
Beta particle


00:00:46 1 Beta decay modes
00:00:56 1.1 βsup−/sup decay (electron emission)
00:02:06 1.2 βsup+/sup decay (positron emission)
00:02:44 1.3 Beta decay schemes
00:03:58 2 Interaction with other matter
00:05:30 2.1 Detection and measurement
00:06:44 3 Uses
00:08:10 4 History
00:09:09 5 Health
00:09:30 6 See also



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SUMMARY
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A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay. There are two forms of beta decay, β− decay and β+ decay, which produce electrons and positrons respectively.Beta particles with an energy of 0.5 MeV have a range of about one metre in air; the distance is dependent on the particle energy.
Beta particles are a type of ionizing radiation and for radiation protection purposes are regarded as being less ionising than alpha particles, but more ionising than gamma rays. The higher the ionising effect, the greater the damage to living tissue.