Abstract
A magnetic spectrometer has been used to investigate the
β
-ray spectra of some elements of low atomic number. It is found that all the spectra follow the Fermi distribution law for a certain range from the high energy end-point, the range over which this is true is much greater if the maximum energy is large. The end-points found are: C
11
0.981 ± 0.005 MeV, N
13
1.218 ± 0.004 MeV, Mn
56
2.88 ± 0.01 and 1.035 ± 0.015 MeV, Cu
64
(positrons) 0.649 ± 0.004 MeV, Cu
64
(negatrons) 0.574 ± 0.004 MeV, Zn
63
2.320 ± 0.005 MeV.
Cited by
30 articles.
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