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|
Half life: | 25.52 h 1 | |
Jp: | 5/2+ |
Sn (keV): | 5118.04 20 |
Sp (keV): | 7.04E3 10 |
Prod. mode: |
Naturally occurring
|
| |
ENSDF citation: | NDS 70,387 (1993) |
Literature cut-off date: | 1-Aug-1993 |
Author(s): | M.R. Schmorak |
References since cut-off: |
231Th decay from 1993-98 (NSR)
|
|
Decay properties: |
Mode | Branching (%) | Q-value (keV) |
References |
b- | 100 | 389.5 17 |
75Ho14 |
a | ~1E-8 | 4213.3 15 |
|
|
Data sets: |
Mode | Data set name | Display data |
|
Gammas from 231Th (25.52 h 1)
|
Eg (keV) |
Ig (%) | Decay mode |
|
9.21 3 |
|
b- |
10.25 |
|
b- |
17.193 4 |
|
b- |
18.053 4 |
0.33 |
b- |
19.1 |
|
b- |
25.646 4 |
14.5 3 |
b- |
26.55 5 |
0.54 3 |
b- |
29.30 5 |
0.035 2 |
b- |
32.73 5 |
0.073 4 |
b- |
33.32 5 |
0.030 2 |
b- |
38.90 5 |
0.110 6 |
b- |
41.55 5 |
0.016 1 |
b- |
42.22 5 |
0.052 3 |
b- |
42.838 5 |
0.058 4 |
b- |
44.080 13 |
0.0007 2 |
b- |
45.34 5 |
0.034 2 |
b- |
58.570 3 |
0.48 2 |
b- |
63.825 6 |
0.023 2 |
b- |
68.48 3 |
0.0057 14 |
b- |
72.751 3 |
0.251 15 |
b- |
77.685 17 |
|
b- |
81.227 3 |
0.89 5 |
b- |
82.087 3 |
0.40 3 |
b- |
84.216 3 |
6.6 3 |
b- |
85.80 5 |
0.0058 6 |
b- |
89.944 5 |
0.94 6 |
b- |
93.063 25 |
0.045 5 |
b- |
97.55 5 |
0.023 1 |
b- |
99.279 3 |
0.120 7 |
b- |
102.268 3 |
0.41 3 |
b- |
105.810 17 |
0.0071 7 |
b- |
106.587 16 |
0.017 1 |
b- |
106.85 10 |
0.03 |
b- |
115.590 6 |
0.0010 2 |
b- |
116.823 13 |
0.0207 13 |
b- |
124.925 4 |
0.056 3 |
b- |
134.025 13 |
0.024 1 |
b- |
135.667 11 |
0.078 5 |
b- |
136.714 18 |
0.0042 2 |
b- |
140.555 20 |
0.00071 7 |
b- |
145.052 6 |
0.0058 4 |
b- |
145.912 6 |
0.032 2 |
b- |
163.105 5 |
0.155 9 |
b- |
164.95 3 |
0.0039 4 |
b- |
169.635 17 |
0.0012 1 |
b- |
173.0 1 |
0.04 |
b- |
174.160 5 |
0.0181 11 |
b- |
183.495 3 |
0.0329 13 |
b- |
188.750 6 |
0.0032 2 |
b- |
217.940 18 |
0.040 3 |
b- |
224.1 1 |
0.0089 8 |
b- |
235.993 18 |
0.0092 6 |
b- |
237.8 1 |
0.09 |
b- |
240.26 4 |
0.00028 3 |
b- |
242.524 22 |
0.00084 8 |
b- |
249.57 4 |
0.00078 8 |
b- |
250.43 4 |
0.00065 7 |
b- |
267.62 4 |
0.00116 13 |
b- |
274.15 4 |
3E-5 1 |
b- |
308.74 5 |
0.00039 4 |
b- |
311.00 3 |
0.0029 2 |
b- |
317.95 4 |
8E-5 1 |
b- |
320.209 18 |
0.00011 1 |
b- |
351.84 4 |
7E-5 1 |
b- |
|
X-rays from 231Th (25.52 h 1)
|
E (keV) |
I (%) | Assignment |
|
11.372 |
3.5 18 |
Pa Ll |
13.127 |
6 3 |
Pa La2 |
13.291 |
53 30 |
Pa La1 |
14.953 |
0.57 10 |
Pa Lh |
15.350 |
1.0 5 |
Pa Lb6 |
16.007 |
14 7 |
Pa Lb2 |
16.104 |
4.2 25 |
Pa Lb4 |
16.639 |
2.9 14 |
Pa Lb5 |
16.708 |
22 4 |
Pa Lb1 |
16.931 |
3.9 24 |
Pa Lb3 |
19.571 |
5.2 9 |
Pa Lg1 |
19.888 |
1.7 10 |
Pa Lg2 |
20.101 |
1.6 10 |
Pa Lg3 |
20.217 |
1.10 21 |
Pa Lg6 |
91.491 |
0.00137 14 |
Pa Ka3 |
92.282 |
0.42 4 |
Pa Ka2 |
95.863 |
0.69 7 |
Pa Ka1 |
107.595 |
0.084 9 |
Pa Kb3 |
108.422 |
0.160 17 |
Pa Kb1 |
109.072 |
0.0058 6 |
Pa Kb5 |
111.486 |
0.062 6 |
Pa Kb2 |
111.870 |
0.0216 24 |
Pa Kb4 |
Betas from 231Th (25.52 h 1)
|
Eb endpoint (keV) |
Ib (%) | Decay mode |
|
37,66 |
0.0029 2 |
b- |
69,29 |
0.065 1 |
b- |
71,55 |
0.00078 6 |
b- |
142,18 |
2.7 5 |
b- |
171,26 |
0.32 20 |
b- |
206 |
12.8 11 |
b- |
215,34 |
1.3 2 |
b- |
287,23 |
12 7 |
b- |
288,09 |
37 15 |
b- |
305,28 |
35 15 |
b- |
311,81 |
0.33 |
b- |
330,93 |
0.33 |
b- |
389,5 |
0.022 7 |
b- |
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