Editing Beta decay (section)

===Kurie plot===
<!-- Note: Kurie is correct (see References below); no relation to the Curies -->

A '''Kurie plot''' (also known as a '''Fermi–Kurie plot''') is a graph used in studying beta decay developed by [[Franz N. D. Kurie]], in which the square root of the number of beta particles whose momentum (or energy) lies within a certain narrow range, divided by the Fermi function, is plotted against beta-particle energy.<ref>{{cite journal
 |last1=Kurie |first1=F. N. D. |author-link=Franz N. D. Kurie
 |last2=Richardson |first2=J. R.
 |last3=Paxton |first3=H. C.
 |year=1936
 |title=The Radiations Emitted from Artificially Produced Radioactive Substances. I. The Upper Limits and Shapes of the β-Ray Spectra from Several Elements
 |journal=[[Physical Review]]
 |volume=49 |issue=5 |pages=368–381
 |bibcode=1936PhRv...49..368K
 |doi=10.1103/PhysRev.49.368
}}</ref><ref>{{cite journal
 |last1=Kurie |first1=F. N. D. |author-link=Franz N. D. Kurie
 |year=1948
 |title=On the Use of the Kurie Plot
 |journal=[[Physical Review]]
 |volume=73 |issue=10 |page=1207
 |bibcode=1948PhRv...73.1207K
 |doi=10.1103/PhysRev.73.1207
}}</ref> It is a straight line for allowed transitions and some forbidden transitions, in accord with the Fermi beta-decay theory. The energy-axis (x-axis) intercept of a Kurie plot corresponds to the maximum energy imparted to the electron/positron (the decay's {{mvar|Q}}&nbsp;value). With a Kurie plot one can find the limit on the effective mass of a neutrino.<ref>{{Cite journal
 |last=Rodejohann |first=W.
 |year=2012
 |title=Neutrinoless double beta decay and neutrino physics
 |journal=Journal of Physics G: Nuclear and Particle Physics
 |volume=39
 |issue=12
 |page=124008
 |arxiv=1206.2560
 |doi=10.1088/0954-3899/39/12/124008
 |bibcode=2012JPhG...39l4008R
 |s2cid=119158221 }}</ref>