Double beta decay | Wikipedia audio article
Channel: wikipedia tts
Date: 08/12/2018

This is an audio version of the Wikipedia Article:
Double beta decay


00:00:53 1 History
00:03:58 2 Ordinary double beta decay
00:07:30 2.1 Known double beta decay isotopes
00:11:27 3 Neutrinoless double beta decay
00:14:08 3.1 Experiments
00:16:55 3.2 Status
00:17:11 3.2.1 Heidelberg-Moscow Controversy
00:17:50 3.2.2 Current results
00:18:13 4 Theoretical higher simultaneous beta decay
00:19:20 5 See also



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SUMMARY
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In nuclear physics, double beta decay is a type of radioactive decay in which two neutrons are simultaneously transformed into two protons, or vice versa, inside an atomic nucleus. As in single beta decay, this process allows the atom to move closer to the optimal ratio of protons and neutrons. As a result of this transformation, the nucleus emits two detectable beta particles, which are electrons or positrons.
The literature distinguishes between two types of double beta decay: ordinary double beta decay and neutrinoless double beta decay. In ordinary double beta decay, which has been observed in several isotopes, two electrons and two electron antineutrinos are emitted from the decaying nucleus. In neutrinoless double beta decay, a hypothesized process that has never been observed, only electrons would be emitted.