| |
|
| Half life: | 2.144E+6 y 7 | |
| Jp: | 5/2+ |
| Sn (keV): | 6574 50 |
| Sp (keV): | 4862.1 3 |
| Prod. mode: |
Fast neutron activation
|
| | |
| ENSDF citation: | NDS 74,461 (1995) |
| Literature cut-off date: | 1-Sep-1994 |
| Author(s): | Y.A. Akovali |
| References since cut-off: |
237Np decay from 1994-98 (NSR)
|
| |
Decay properties: |
| Mode | Branching (%) | Q-value (keV) |
|
| a | 100 | 4959.1 12 |
|
| SF | <2E-10 | |
|
| |
Most Recent ENSDF Data (12/2002) |
| Mode | Data set name | Display data |
|
| TORI Data (1999)
Gammas from 237Np (2.144E+6 y 7)
|
| Eg (keV) |
Ig (%) | Decay mode |
|
| 5.5 |
|
a |
| 6.68 5 |
|
a |
| 8.22 5 |
|
a |
| 9.0 |
|
a |
| 10.7 |
|
a |
| 17.40 5 |
|
a |
| 22.6 |
|
a |
| 24.14 10 |
|
a |
| 29.374 20 |
15.0 10 |
a |
| 29.6 |
|
a |
| 32.46 |
|
a |
| 36.24 10 |
|
a |
| 43.2 |
|
a |
| 46.53 6 |
0.11 1 |
a |
| 48.96 10 |
|
a |
| 54.40 10 |
|
a |
| 57.10 2 |
0.39 1 |
a |
| 62.59 10 |
0.006 3 |
a |
| 63.92 6 |
0.012 2 |
a |
| 70.49 10 |
0.012 3 |
a |
| 74.54 10 |
0.011 3 |
a |
| 86.477 10 |
12.4 4 |
a |
| 87.99 3 |
0.14 1 |
a |
| 94.66 5 |
0.6 2 |
a |
| 106.15 25 |
0.053 5 |
a |
| 108.7 7 |
0.068 15 |
a |
| 109.10 10 |
|
a |
| 115.4 4 |
0.0026 8 |
a |
| 117.702 20 |
0.16 1 |
a |
| 131.101 25 |
0.085 9 |
a |
| 134.285 20 |
0.067 7 |
a |
| 139.9 1 |
0.005 |
a |
| 141.74 10 |
|
a |
| 143.249 20 |
0.43 2 |
a |
| 151.414 20 |
0.232 12 |
a |
| 153.37 10 |
0.0050 10 |
a |
| 153.6 2 |
|
a |
| 155.239 20 |
0.092 9 |
a |
| 162.41 |
|
a |
| 162.504 12 |
0.032 4 |
a |
| 169.159 10 |
0.073 7 |
a |
| 170.59 6 |
0.020 4 |
a |
| 170.7 3 |
|
a |
| 176.12 6 |
0.018 3 |
a |
| 180.81 10 |
0.020 4 |
a |
| 186.8 2 |
|
a |
| 186.86 35 |
0.003 3 |
a |
| 191.46 5 |
0.025 4 |
a |
| 193.26 5 |
0.049 5 |
a |
| 194.7 2 |
|
a |
| 194.95 3 |
0.184 10 |
a |
| 196.86 5 |
0.020 3 |
a |
| 199.95 |
|
a |
| 199.95 6 |
0.004 1 |
a |
| 201.62 5 |
0.044 5 |
a |
| 202.0 2 |
0.0048 19 |
a |
| 209.19 5 |
0.016 2 |
a |
| 212.29 5 |
0.155 10 |
a |
| 214.01 5 |
0.045 9 |
a |
| 219.8 |
|
a |
| 222.6 2 |
0.0020 10 |
a |
| 229.94 5 |
0.014 4 |
a |
| 237.86 2 |
0.063 7 |
a |
| 248.95 10 |
0.0050 14 |
a |
| 250.5 3 |
|
a |
| 257.09 20 |
0.0064 14 |
a |
| 257.30 15 |
|
a |
| 262.44 20 |
0.0068 14 |
a |
| 279.65 20 |
0.002 2 |
a |
|
X-rays from 237Np (2.144E+6 y 7)
|
| E (keV) |
I (%) | Assignment |
|
| 11.372 |
1.15 13 |
Pa Ll |
| 13.127 |
1.94 16 |
Pa La2 |
| 13.291 |
17.3 14 |
Pa La1 |
| 14.953 |
0.41 4 |
Pa Lh |
| 15.350 |
0.32 3 |
Pa Lb6 |
| 16.007 |
4.6 4 |
Pa Lb2 |
| 16.104 |
0.75 16 |
Pa Lb4 |
| 16.639 |
0.93 8 |
Pa Lb5 |
| 16.708 |
15.7 17 |
Pa Lb1 |
| 16.931 |
0.70 15 |
Pa Lb3 |
| 19.571 |
3.7 4 |
Pa Lg1 |
| 19.888 |
0.30 7 |
Pa Lg2 |
| 20.101 |
0.29 7 |
Pa Lg3 |
| 20.217 |
0.79 11 |
Pa Lg6 |
| 91.491 |
0.0053 4 |
Pa Ka3 |
| 92.282 |
1.64 12 |
Pa Ka2 |
| 95.863 |
2.67 19 |
Pa Ka1 |
| 107.595 |
0.326 23 |
Pa Kb3 |
| 108.422 |
0.62 4 |
Pa Kb1 |
| 109.072 |
0.0225 18 |
Pa Kb5 |
| 111.486 |
0.239 17 |
Pa Kb2 |
| 111.870 |
0.084 7 |
Pa Kb4 |
Alphas from 237Np (2.144E+6 y 7)
|
| Ea (keV) |
Ia (%) |
|
| 4514.5 20 |
0.04 2 |
| 4572.1 |
|
| 4573.8 20 |
0.054 |
| 4581.0 20 |
0.40 4 |
| 4598.6 20 |
0.34 4 |
| 4620 |
|
| 4639.4 20 |
6.18 12 |
| 4664.0 20 |
3.32 10 |
| 4694.4 20 |
0.48 20 |
| 4708.3 20 |
|
| 4712.3 20 |
|
| 4741.3 20 |
0.019 |
| 4766.0 15 |
8 3 |
| 4771.0 15 |
25 6 |
| 4788.0 15 |
47 9 |
| 4803.3 20 |
1.56 |
| 4817.3 20 |
2.5 4 |
| 4862.8 20 |
0.24 |
| 4873.0 20 |
0.44 |
|
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