Fermium
Isotopes
Content created by
REAL
intelligence since 2016
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Isotope
Abundance
T
½
(s)
Decay
241
Fm
242
Fm
243
Fm
244
Fm
245
Fm
246
Fm
247
Fm
248
Fm
249
Fm
250
Fm
251
Fm
252
Fm
253
Fm
254
Fm
255
Fm
256
Fm
257
Fm
258
Fm
259
Fm
All data from [3].
α:
alpha particle emission (
4
He nucleus)
β+:
emission of an anti-electron and a neutrino. A proton inside the nucleus is transformed into a neutron
β-:
emission of an electron and an anti-neutrino. A neutron inside the nucleus is transformed into a proton
ec:
electron capture: capture of one orbital electron by the the nucleus. A proton inside the nucleus is transformed into a neutron plus a neutrino
SF:
Spontaneous Fission: a nucleus spontaneously splits into fragment nuclides
IT:
Isomeric Transition: a level above the ground state decays via electromagnetic process
n:
neutron emission
p:
proton emission
β- n (and similar):
beta- decay followed by delayed neutron emission