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

Mode Branching (%) Q-value (keV) b- 100 498.38

Betas from ¹⁷⁷Lu (6.734 d 12) Eb endpoint (keV) Ib (%) Decay mode 176.98 12.2 7 b- 248.63 0.053 22 b- 385.35 9.1 13 b- 498.3 78.6 11 b-

Gammas from ¹⁷⁷Lu (6.734 d 12) Eg (keV) Ig (%) Decay mode 71.646 2 0.154 8 b- 112.9498 5 6.4 3 b- 136.7248 12 0.048 2 b- 208.3664 5 11.0 6 b- 249.6741 10 0.212 11 b- 321.3162 16 0.219 11 b-

Betas from ^177mLu (160.4 d 3) Eb endpoint (keV) Ib (%) Decay mode 153.02 61.3 7 b-

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