Isotopes of Lawrencium (Z=103)

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Isotope Half-life Spin Parity Decay Mode(s) or Abundance
251Lr
252Lr
253Lr 1.3 s %A=98 2, %EC ~ 1 sys%SF < 1
254Lr 13 s %A=78 6 , %EC=22 6, %SF < 0.16
255Lr 22 s %A=85 15, %EC<30, %SF<0.10
256Lr 28 s %A>80, %EC<20, %SF<0.026
257Lr 0.646 s(9/2+) %A=100, %SF < 6.5E-4
258Lr 3.9 s %A>95, %EC<5, %SF < 5.0
259Lr 6.3 s %A=77 2, %SF=23 2, %EC<0.5
260Lr 180 s %A=75 10, %EC=25 10
261Lr 39 m %SF < 100
262Lr 216 m %SF<10
263Lr
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
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