Proton emission
| Nuclear physics |
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Proton emission (also known as proton radioactivity) is a rare type of radioactive decay in which a
tunnels out of the nucleus in a finite time. The rate of proton emission is governed by the nuclear, Coulomb, and centrifugal potentials of the nucleus, where centrifugal potential affects a large part of the rate of proton emission. The half-life of a nucleus with respect to proton emission is affected by the proton energy and its orbital angular momentum.[1] Proton emission is not seen in naturally occurring isotopes; proton emitters can be produced via nuclear reactions, usually using linear particle accelerators
.
Although prompt (i.e. not beta-delayed) proton emission was observed from an isomer in
quantum tunneling
.
In 2002, the simultaneous emission of two protons was observed from the nucleus
zinc-54 can also undergo double proton decay.[4]
See also
- Nuclear drip line
- Diproton(a particle possibly involved in double proton decay)
- Free neutron
- Neutron emission
- Photodisintegration
References
- ISBN 978-0-7923-6937-0.
- ISBN 0-7503-0338-7.
- ^ Armand, Dominique (June 6, 2002). "A new mode of radioactive decay". CNRS. Archived from the original on 4 February 2005. Retrieved 2022-01-07.
- S2CID 119276805.
External links
Nuclear Structure and Decay Data - IAEA with query on Proton Separation Energy
