21 F
9 12
Half life: 4.158 s 20
Jp: 5/2+
Decay mode: b-
Sn (keV): 8101.5 18
Sp (keV): 11133.5 22
Prod. mode: Charged particle reaction
Literature cut-off date: 1-Jun-1990
Author(s): P.M. Endt
ENSDF citation: NP A521,1 (1990)

Decay properties

Mode Branching (%) Q-value (keV)
b- 100 5684.1 18

Gammas from 21F (4.158 s 20)

Eg (keV) Ig (%) Decay mode
350.72 6 99 b-
1396 17.0 3 b-
1731 <0.0010 b-
1736 <0.0010 b-
1745.5 0.855 15 b-
1890 0.0020 3 b-
1895 <0.0008 b-
2779 0.00175 17 b-
2938 <0.0010 b-
3534 0.00323 17 b-
3735 0.0028 3 b-
3884.5 0.00106 14 b-
4175 0.0353 7 b-
4334 0.0526 14 b-
4525 0.0105 3 b-
4684 0.0310 10 b-

X-rays from 21F (4.158 s 20)

E (keV) I (%) Assignment
0,822 2.9E-11 3 Ne Ka3
0,848 0.0097 10 Ne Ka2
0,849 0.0194 20 Ne Ka1

Betas from 21F (4.158 s 20)

>Eb endpoint (keV) Ib (%) Decay mode
999,6 0.08 4 b-
1158,7 0.043 3 b-
1799,8 0.0040 4 b-
1948,8 0.0031 4 b-
3938,19 16.1 10 b-
5333,37 74 3 b-
5684,1 10 3 b-