11 Be
4 7
Half life: 13.81 s 8
Jp: 1/2+
Decay mode: b-, b-a
Sn (keV): 504 6
Sp (keV): 20165 16
Prod. mode: Fast neutron activation
Literature cut-off date: 1-Jun-1989
Author(s): F. Ajzenberg-Selove
ENSDF citation: NP A506,1 (1990)

Decay properties

Mode Branching (%) Q-value (keV)
b- 100 11506 6
b-a 3.1 4

Gammas from 11Be (13.81 s 8)

Eg (keV) Ig (%) Decay mode
692.31 0.85 4 b-
2124.473 100 b-
2895.21 14.4 6 b-
4443.93 100 b-
4666.05 28.5 11 b-
5019.08 85.6 6 b-
5851.48 53.2 12 b-
6789.55 67.5 11 b-
7282.92 87.0 20 b-
7974.74 46.2 11 b-

X-rays from 11Be (13.81 s 8)

E (keV) I (%) Assignment
0,183 1.8E-07 7 B Ka1
0,183 9E-08 4 B Ka2

Betas from 11Be (13.81 s 8)

>Eb endpoint (keV) Ib (%) Decay mode
1630 3.1 4 b-
3528,16 4.0 3 b-
4714,2 6.5 5 b-
6485,69 0.282 20 b-
7061,11 0.054 4 b-
9381,31 31.4 18 b-
11506 54.7 20 b-