DescriptionLutetium nuclear isomer energy levels.gif
English: 177Lu Energy Diagram. "Figure 4. Decay scheme of 177mLu. Shown are the level energies, spins, and level differences that created the released gamma energies."
M.S. Litz and G. Merkel Army Research Laboratory, SEDD, DEPG Adelphi, MD 20783
From preceding figure:
Figure 3. The isomer of Lutecium decays to the ground state of hafnium by two different paths. The isomeric
decay mode occurs 21.7% of the time with a 10 unique gamma lines. The beta decay mode occurs 78.3% of the
time with 40 gamma lines and one beta energy
[tau ~ 160.4 d for 177mLu, 6.68 d for 177Lu]
Gammas from 177mLu (160.4 d 3)
Eg (keV) Ig (%) Decay mode
115.8682 23 0.65 4 IT
121.6211 5 5.91 15 IT
147.1640 7 3.51 14 IT
171.8576 8 4.81 12 IT
195.5601 20 0.84 4 IT
218.1039 7 3.28 12 IT
268.7850 10 3.43 12 IT
319.0205 8 10.5 3 IT
367.4176 10 3.15 11 IT
413.6636 7 17.4 6 IT
Betas from 177mLu (160.4 d 3)
Eb endpoint (keV) Ib (%) Decay mode
153.02 61.3 7 b-
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{{Information |Description={{en|1=177Lu Energy Diagram. "Figure 4. Decay scheme of 177mLu. Shown are the level energies, spins, and level differences that created the released gamma energies."}} |Source=http://www.dtic.mil/cgi-bin/GetTRDoc?Location=U2&