ENSDF Decay Data in the MIRD
(Medical Internal Radiation Dose) Format
for 237Np

93-NEPTUNIUM-237
Additional Views or Possible Data
Parent Information

93-NEPTUNIUM-237

Halflife = 2.14E+6 Years Aug-1990
Decay Mode: alpha
Radiations


y(i)
(Bq-s)-1


E(i)
(MeV)


y(i)E(i)

alpha 5 4.0010-03 4.581 1.8310-02
alpha recoil 4.0010-03 7.79610-02 3.1210-04
alpha 7 3.4010-03 4.599 1.5610-02
alpha recoil 3.4010-03 7.82610-02 2.6610-04
alpha 9 6.1810-02 4.639 2.8710-01
alpha recoil 6.1810-02 7.89610-02 4.8810-03
alpha 10 2.8510-03 4.659 1.3310-02
alpha recoil 2.8510-03 7.92910-02 2.2610-04
alpha 11 3.3210-02 4.664 1.5510-01
alpha recoil 3.3210-02 7.93810-02 2.6410-03
alpha 12 4.8010-03 4.694 2.2510-02
alpha recoil 4.8010-03 7.98910-02 3.8310-04
alpha 17 8.0010-02 4.766 3.8110-01
alpha recoil 8.0010-02 8.11110-02 6.4910-03
alpha 18 2.5010-01 4.771 1.19
alpha recoil 2.5010-01 8.12010-02 2.0310-02
alpha 19 4.7010-01 4.788 2.25
alpha recoil 4.7010-01 8.14910-02 3.8310-02
alpha 20 1.5610-02 4.803 7.4910-02
alpha recoil 1.5610-02 8.17510-02 1.2810-03
alpha 21 2.5010-02 4.817 1.2010-01
alpha recoil 2.5010-02 8.19810-02 2.0510-03
alpha 22 2.4010-03 4.863 1.1710-02
alpha recoil 2.4010-03 8.27610-02 1.9910-04
alpha 23 9.2510-03 4.871 4.5110-02
alpha recoil 9.2510-03 8.29010-02 7.6710-04
alpha 24 4.4010-03 4.873 2.1410-02
alpha recoil 4.4010-03 8.29310-02 3.6510-04
gamma 3 9.0010-02 8.22010-03 7.4010-04
gamma 9 1.5010-01 2.93710-02 4.4110-03
ce-L, gamma 9 3.5110-01 8.26910-03 a 2.9010-03
ce-M, gamma 9 8.8510-02 2.40110-02 a 2.1210-03
gamma 14 1.1010-03 4.65310-02 5.1210-05
gamma 17 3.9010-03 5.71010-02 2.2310-04
ce-L, gamma 17 5.0710-01 3.60010-02 a 1.8310-02
ce-M, gamma 17 1.4010-01 5.17410-02 a 7.2210-03
ce-N+, gamma 17 5.1910-02 5.57210-02 a 2.8910-03
ce-L, gamma 18 2.8810-03 4.14910-02 a 1.1910-04
ce-L, gamma 19 8.8610-03 4.28010-02 a 3.7910-04
ce-M, gamma 19 2.5110-03 5.85310-02 a 1.4710-04
ce-N+, gamma 19 9.2410-04 6.25110-02 a 5.7810-05
gamma 22 1.2410-01 8.64810-02 1.0710-02
ce-L, gamma 22 1.4010-01 6.53710-02 a 9.1610-03
ce-M, gamma 22 2.7310-02 8.11110-02 a 2.2110-03
gamma 23 1.4010-03 8.79910-02 1.2310-04
gamma 24 6.0010-03 9.46410-02 5.6810-04
gamma 25 5.3010-04 1.06110-01 5.6310-05
ce-L, gamma 25 3.6410-03 8.50510-02 a 3.1010-04
ce-M, gamma 25 1.0110-03 1.00810-01 a 1.0110-04
gamma 26 6.8010-04 1.08710-01 7.3910-05
ce-L, gamma 26 1.9110-03 8.76010-02 a 1.6710-04
gamma 29 1.6010-03 1.17710-01 1.8810-04
ce-K, gamma 29 1.5810-02 5.10110-03 8.0810-05
ce-L, gamma 29 3.6510-03 9.66010-02 a 3.5210-04
ce-M, gamma 29 8.9610-04 1.12310-01 a 1.0110-04
gamma 30 8.5010-04 1.31110-01 1.1110-04
gamma 31 6.7010-04 1.34310-01 9.0010-05
ce-K, gamma 31 4.2910-03 2.16810-02 9.3010-05
ce-L, gamma 31 1.0510-03 1.13210-01 a 1.1810-04
gamma 34 4.3010-03 1.43210-01 6.1610-04
ce-K, gamma 34 2.4510-02 3.06510-02 7.5110-04
ce-L, gamma 34 5.3310-03 1.22110-01 a 6.5110-04
ce-M, gamma 34 1.2910-03 1.37910-01 a 1.7810-04
ce-N+, gamma 34 4.8210-04 1.41910-01 a 6.8310-05
gamma 35 2.3210-03 1.51410-01 3.5110-04
ce-K, gamma 35 8.5810-03 3.88110-02 3.3310-04
ce-L, gamma 35 2.6210-03 1.30310-01 a 3.4210-04
ce-M, gamma 35 6.6810-04 1.46010-01 a 9.7610-05
gamma 38 9.2010-04 1.55210-01 1.4310-04
gamma 40 3.2010-04 1.62410-01 5.2010-05
gamma 41 7.3010-04 1.69210-01 1.2310-04
gamma 42 2.0010-04 1.70610-01 3.4110-05
gamma 45 2.0010-04 1.80810-01 3.6210-05
gamma 48 2.5010-04 1.91510-01 4.7910-05
gamma 49 4.9010-04 1.93310-01 9.4710-05
ce-K, gamma 49 1.1310-03 8.06610-02 9.0910-05
gamma 51 1.8410-03 1.94910-01 3.5910-04
gamma 52 2.0010-04 1.96910-01 3.9410-05
gamma 55 4.4010-04 2.01610-01 8.8710-05
gamma 57 1.6010-04 2.09210-01 3.3510-05
gamma 58 1.5510-03 2.12310-01 3.2910-04
gamma 59 4.5010-04 2.14010-01 9.6310-05
ce-K, gamma 59 7.6510-04 1.01410-01 7.7610-05
gamma 63 6.3010-04 2.37910-01 1.5010-04
Kalpha1 X-ray 2.6810-02 9.58710-02 2.5710-03
Kalpha2 X-ray 1.6710-02 9.22910-02 1.5410-03
Kbeta X-ray 1.2910-02 1.08010-01 * 1.3910-03
L X-ray 5.2610-01 1.33010-02 * 7.0010-03
Auger-K 1.7210-03 7.08010-02 * 1.2210-04
Auger-L 5.5210-01 9.68010-03 * 5.3410-03

Listed X, gamma, and gamma Radiations 3.2410-02
Omitted X, gamma, and gamma Radiations** 1.9010-04
Listed beta, ce, and Auger Radiations 5.4810-02
Omitted beta, ce, and Auger Radiations** 9.0710-04
Listed alpha Radiations 4.61
Omitted alpha Radiations** 1.3110-02
Listed Radiations 4.70
Omitted Radiations** 1.4210-02

*   Average Energy (MeV).
a   Maximum Energy (MeV) for subshell.
** Each omitted transition contributes <0.100% to Sumof y(i)E(i).


Protactinium-233 Daughter is radioactive.





This program and the accompanying data base have been produced by the National Nuclear Data Center located at the Brookhaven National Laboratory, Upton, N.Y., USA, with funding from the U.S. Department of Energy. Neither the BNL nor the USDOE make any warranty or assume any legal responsibility for the contents of the data base.
Generated by MIRD Fri May 19 8:38:02 2000

Additional Views or Possible Data for the Parent 237Np
CSISRS Experimental neutron-induced reaction data in the Exchange Format (EXFOR)
237Np CS List production cross section datasets
ENSDF Evaluated Nuclear Structure Data File
ENSDF All decay datasets for the parent. Isotope Explorer may be used as a helper to view these data on Win95/98/NT platforms. (22.5 kbytes)
Table Simple HTML tables of information contained in the decay datasets (Est. size: 19.5 kbytes.)
Drawing PostScript file of the decay schemes in the Nuclear Data Sheets style (Est. size: 80.1 kbytes.)
MIRD PostScript files of the tables and decay schemes in the MIRD format
NSR Nuclear Science References
NuDat Nuclear Data File
Wallet Ground and metastable state properties
Radiations Decay Radiations

Parent Decays Feeding 237Np
Parent Mode
237U beta-
237Pu beta+/EC
241Am alpha