37 Ca
20 17
Half life: 181.1 ms 10
Jp: 3/2+
Decay mode: e+b+, ep
Sn (keV): 14793 46
Sp (keV): 3025 24
Prod. mode: Charged particle reaction
Literature cut-off date: 1-Jun-1990
Author(s): P.M. Endt
Update: 1-Jan-1997, R.B. Firestone
ENSDF citation: NP A521,1 (1990)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 11639 22
ep 76 3

Gammas from 37Ca (181.1 ms 10)

Eg (keV) Ig (%) Decay mode
1370.82 8.4 25 e+b+

X-rays from 37Ca (181.1 ms 10)

E (keV) I (%) Assignment
0,296 6.9E-06 21 K Lb1
0,359 2.0E-06 7 K Lb4
0,359 3.1E-06 11 K Lb3
3,230 3.1E-10 3 K Ka3
3,311 0.00212 22 K Ka2
3,314 0.0042 4 K Ka1
3,590 0.00039 4 K Kb1
3,590 2.00E-04 21 K Kb3

Betas from 37Ca (181.1 ms 10)

>Eb endpoint (keV) Ib (%) Decay mode
4600 0.65 9 b+
5167 0.51 19 b+
5297 1.1 3 b+
5494 5.9 5 b+
5567,8 47 b+
5598,5 1.9 6 b+
5622 0.0008 1 e
5947,1 1.2 5 b+
6108 2.1 2 b+
6184,6 1.15 14 b+
6189 0.0005 2 e
6319 0.0009 3 e
6516 0.0046 4 e
6589,8 0.035 e
6620,5 0.0014 4 e
6777 4.5 3 b+
6969,1 0.0007 3 e
7000 4.0 4 b+
7130 0.0012 1 e
7206,6 0.00063 8 e
7799 0.0019 1 e
7866,73 6.4 7 b+
8022 0.0015 2 e
8888,73 0.0017 2 e
9246,15 8.4 25 b+
10268,15 0.0014 4 e
10617 15.6 5 b+
11639 0.0017 1 e