| |
|
|---|
| Half life: | 42.2 m 5 | |
|---|
| Jp: | 3/2+ |
|---|
| Sn (keV): | 4561.3 3 |
|---|
| Sp (keV): | 7450 91 |
|---|
| Prod. mode: |
Thermal neutron activation
|
|---|
| | |
|---|
| ENSDF citation: | NDS 65,669 (1992) |
|---|
| Literature cut-off date: | 31-Aug-1990 |
|---|
| Author(s): | E. Browne |
|---|
| References since cut-off: |
227Ra decay from 1990-98 (NSR)
|
|---|
| |
|---|
Decay properties:
|
|---|
| Mode | Branching (%) | Q-value (keV) |
References |
|---|
| b- | 100 | 1326.2 24 |
71Lo15 |
| |
|---|
Most Recent ENSDF Data (12/2002)
|
|---|
| Mode | Data set name | Display data |
|---|
|
|---|
| TORI Data (1999)
Gammas from 227Ra (42.2 m 5)
|
|---|
| Eg (keV) |
Ig (%) | Decay mode |
|---|
|
| 16.5 1 |
0.23 |
b- |
| 19 |
0.29 |
b- |
| 24.7 2 |
~0.034 |
b- |
| 27.36 1 |
16 |
b- |
| 29.96 2 |
0.032 |
b- |
| 38.19 1 |
<0.018 |
b- |
| 44.15 1 |
<0.24 |
b- |
| 46.36 2 |
0.17 |
b- |
| 54.60 2 |
<0.009 |
b- |
| 57.1 1 |
0.022 |
b- |
| 57.18 3 |
<0.0036 |
b- |
| 74.15 4 |
0.14 |
b- |
| 146.9 5 |
<0.27 |
b- |
| 198.89 9 |
0.027 |
b- |
| 209.6 2 |
0.10 |
b- |
| 218.19 10 |
0.19 |
b- |
| 219.9 2 |
0.19 |
b- |
| 226.6 1 |
0.027 |
b- |
| 228.0 1 |
0.38 |
b- |
| 232.2 1 |
0.27 |
b- |
| 242.1 2 |
0.027 |
b- |
| 243.10 6 |
0.49 |
b- |
| 245.99 6 |
0.027 |
b- |
| 255.77 5 |
0.18 |
b- |
| 258.38 7 |
1.8 |
b- |
| 259.7 2 |
0.027 |
b- |
| 273.14 5 |
0.9 |
b- |
| 277.4 1 |
2.6 |
b- |
| 283.69 1 |
3.1 |
b- |
| 300.07 1 |
4.6 |
b- |
| 302.65 1 |
4.3 |
b- |
| 327.14 7 |
0.27 |
b- |
| 330.06 1 |
2.7 |
b- |
| 341.1 1 |
0.20 |
b- |
| 354.47 5 |
0.7 |
b- |
| 379.35 7 |
0.42 |
b- |
| 390.4 6 |
0.07 |
b- |
| 395.50 7 |
0.08 |
b- |
| 398.4 4 |
0.08 |
b- |
| 407.81 2 |
2.2 |
b- |
| 428.4 2 |
0.08 |
b- |
| 435.1 1 |
0.22 |
b- |
| 468.5 5 |
0.24 |
b- |
| 471.3 5 |
0.24 |
b- |
| 478.4 4 |
0.08 |
b- |
| 487.0 1 |
2.3 |
b- |
| 490.8 4 |
0.14 |
b- |
| 501.4 1 |
0.9 |
b- |
| 510.0 2 |
|
b- |
| 516.2 2 |
1.4 |
b- |
| 535.6 2 |
0.6 |
b- |
| 543.1 1 |
0.24 |
b- |
| 611.4 2 |
1.2 |
b- |
| 639.4 2 |
0.22 |
b- |
| 652.2 2 |
0.22 |
b- |
| 671.2 2 |
0.14 |
b- |
| 760.3 2 |
0.12 |
b- |
| 789.8 3 |
0.14 |
b- |
| 828.9 3 |
0.027 |
b- |
| 836.4 3 |
0.09 |
b- |
| 846.7 3 |
<0.05 |
b- |
| 863.5 3 |
0.14 |
b- |
| 874.7 3 |
0.08 |
b- |
|
X-rays from 227Ra (42.2 m 5)
|
|---|
| E (keV) |
I (%) | Assignment |
|---|
|
| 10.871 |
0.92 10 |
Ac Ll |
| 12.500 |
1.61 10 |
Ac La2 |
| 12.651 |
14.4 9 |
Ac La1 |
| 14.082 |
0.243 17 |
Ac Lh |
| 14.601 |
0.257 17 |
Ac Lb6 |
| 15.191 |
1.46 22 |
Ac Lb4 |
| 15.212 |
3.7 3 |
Ac Lb2 |
| 15.711 |
9.5 7 |
Ac Lb1 |
| 15.790 |
0.71 5 |
Ac Lb5 |
| 15.931 |
1.43 22 |
Ac Lb3 |
| 18.405 |
2.21 16 |
Ac Lg1 |
| 18.734 |
0.56 9 |
Ac Lg2 |
| 18.922 |
0.58 9 |
Ac Lg3 |
| 18.997 |
0.47 5 |
Ac Lg6 |
| 86.910 |
0.0084 13 |
Ac Ka3 |
| 87.675 |
3.0 5 |
Ac Ka2 |
| 90.886 |
4.9 7 |
Ac Ka1 |
| 102.101 |
0.59 9 |
Ac Kb3 |
| 102.841 |
1.14 17 |
Ac Kb1 |
| 103.461 |
0.039 6 |
Ac Kb5 |
| 105.738 |
0.43 6 |
Ac Kb2 |
| 106.098 |
0.147 22 |
Ac Kb4 |
Betas from 227Ra (42.2 m 5)
|
|---|
| Eb endpoint (keV) |
Ib (%) | Decay mode |
|---|
|
| 451.5 |
0.2 |
b- |
| 462.6 |
0.2 |
b- |
| 536 |
0.3 |
b- |
| 627.6 |
0.4 |
b- |
| 687.1 |
1 |
b- |
| 763.4 |
2 |
b- |
| 789.2 |
0.4 |
b- |
| 811.84 |
3 |
b- |
| 824.92 |
2 |
b- |
| 891.01 |
3 |
b- |
| 897.8 |
0.2 |
b- |
| 900.61 |
1 |
b- |
| 971.7 |
8 |
b- |
| 996.16 |
11 |
b- |
| 1021.47 |
4 |
b- |
| 1053.06 |
2 |
b- |
| 1279.85 |
28 |
b- |
| 1298.83 |
36 |
b- |
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