ENSDF Decay Data in the MIRD
(Medical Internal Radiation Dose) Format
for 231Pa

91-PROTACTINIUM-231
Additional Views or Possible Data
Parent Information

91-PROTACTINIUM-231

Halflife = 3.276E+4 Years May-1992
Decay Mode: alpha
Radiations


y(i)
(Bq-s)-1


E(i)
(MeV)


y(i)E(i)

alpha 7 1.5010-02 4.681 7.0210-02
alpha recoil 1.5010-02 8.17810-02 1.2310-03
alpha 8 1.0010-02 4.713 4.7110-02
alpha recoil 1.0010-02 8.23310-02 8.2310-04
alpha 9 8.4010-02 4.736 3.9810-01
alpha recoil 8.4010-02 8.27410-02 6.9510-03
alpha 11 1.4010-02 4.853 6.7910-02
alpha recoil 1.4010-02 8.47810-02 1.1910-03
alpha 13 3.0010-02 4.934 1.4810-01
alpha recoil 3.0010-02 8.62010-02 2.5910-03
alpha 14 2.2810-01 4.951 1.13
alpha recoil 2.2810-01 8.65010-02 1.9710-02
alpha 15 4.0010-03 4.975 1.9910-02
alpha recoil 4.0010-03 8.69110-02 3.4810-04
alpha 16 1.4010-02 4.986 6.9810-02
alpha recoil 1.4010-02 8.71010-02 1.2210-03
alpha 17 2.5410-01 5.014 1.27
alpha recoil 2.5410-01 8.75910-02 2.2210-02
alpha 18 2.0010-01 5.028 1.01
alpha recoil 2.0010-01 8.78410-02 1.7610-02
alpha 19 2.5010-02 5.032 1.2610-01
alpha recoil 2.5010-02 8.79110-02 2.2010-03
alpha 20 1.1010-01 5.059 5.5610-01
alpha recoil 1.1010-01 8.83710-02 9.7210-03
gamma 1 3.0610-03 1.65010-02 5.0510-05
ce-M, gamma 1 8.1710-03 1.15010-02 a 9.3910-05
gamma 2 3.7410-03 1.90010-02 7.1110-05
ce-M, gamma 2 3.2810-01 1.40010-02 a 4.5910-03
ce-L, gamma 4 8.7710-03 4.66010-03 a 4.0910-05
ce-M, gamma 4 2.1010-03 1.95010-02 a 4.1010-05
ce-L, gamma 5 1.7810-01 5.67010-03 a 1.0110-03
ce-M, gamma 5 4.2810-02 2.05110-02 a 8.7810-04
gamma 6 1.0310-01 2.73610-02 2.8110-03
ce-L, gamma 7 2.2810-01 1.01210-02 a 2.3110-03
ce-M, gamma 7 5.8810-02 2.49610-02 a 1.4710-03
gamma 9 1.6010-03 3.81910-02 6.1010-05
ce-L, gamma 9 1.1010-01 1.83510-02 a 2.0210-03
ce-M, gamma 9 2.7210-02 3.31910-02 a 9.0210-04
ce-L, gamma 10 1.9410-02 2.43110-02 a 4.7110-04
ce-M, gamma 10 4.6510-03 3.91510-02 a 1.8210-04
gamma 11 2.2310-03 4.63510-02 1.0310-04
ce-L, gamma 11 1.5010-03 2.65110-02 a 3.9910-05
gamma 13 8.5010-04 5.27310-02 4.4810-05
ce-L, gamma 13 1.5010-02 3.28910-02 a 4.9510-04
ce-M, gamma 13 3.6310-03 4.77310-02 a 1.7310-04
ce-N+, gamma 13 1.3110-03 5.14610-02 a 6.7410-05
gamma 14 7.6510-04 5.46010-02 4.1810-05
ce-L, gamma 15 2.9510-02 3.73510-02 a 1.1010-03
ce-M, gamma 15 8.0610-03 5.21910-02 a 4.2110-04
ce-N+, gamma 15 2.9010-03 5.59210-02 a 1.6210-04
ce-L, gamma 16 3.1810-03 3.73510-02 a 1.1910-04
ce-M, gamma 16 8.6710-04 5.21910-02 a 4.5210-05
ce-L, gamma 18 3.2610-02 4.38110-02 a 1.4310-03
ce-M, gamma 18 8.8910-03 5.86510-02 a 5.2110-04
ce-N+, gamma 18 3.2110-03 6.23810-02 a 2.0010-04
ce-L, gamma 21 7.4710-03 5.43110-02 a 4.0610-04
ce-M, gamma 21 2.0410-03 6.91510-02 a 1.4110-04
ce-N+, gamma 21 7.4010-04 7.28810-02 a 5.3910-05
gamma 22 7.3310-04 7.73410-02 5.6710-05
ce-L, gamma 22 4.2410-03 5.75010-02 a 2.4410-04
ce-M, gamma 22 1.0210-03 7.23410-02 a 7.3710-05
gamma 23 9.5210-04 9.68410-02 9.2210-05
ce-L, gamma 23 8.5210-03 7.70010-02 a 6.5610-04
ce-M, gamma 23 2.3310-03 9.18410-02 a 2.1410-04
ce-N+, gamma 23 8.5010-04 9.55710-02 a 8.1210-05
ce-L, gamma 24 2.2510-03 8.10010-02 a 1.8310-04
ce-M, gamma 24 6.1510-04 9.58410-02 a 5.8910-05
ce-L, gamma 25 4.6410-04 8.27610-02 a 3.8410-05
gamma 30 4.8310-04 2.43110-01 1.1710-04
ce-K, gamma 30 2.8510-04 1.36310-01 3.8810-05
ce-K, gamma 31 3.0110-04 1.38810-01 4.1810-05
gamma 33 1.1210-03 2.55810-01 2.8710-04
ce-L, gamma 33 1.3910-04 2.35910-01 a 3.2810-05
gamma 35 1.8810-03 2.60210-01 4.8910-04
ce-K, gamma 35 7.3310-04 1.53410-01 1.1210-04
ce-L, gamma 35 2.5910-04 2.40310-01 a 6.2310-05
gamma 36 5.9710-04 2.73110-01 1.6310-04
ce-K, gamma 36 3.5810-04 1.66410-01 5.9610-05
gamma 37 6.9410-04 2.77310-01 1.9210-04
gamma 38 1.7010-02 2.83710-01 4.8210-03
ce-K, gamma 38 5.6410-04 1.76910-01 9.9910-05
gamma 39 2.4710-02 3.00110-01 7.4010-03
ce-K, gamma 39 1.5910-02 1.93310-01 3.0810-03
ce-L, gamma 39 2.9810-03 2.80210-01 a 8.3610-04
ce-M, gamma 39 7.1510-04 2.95110-01 a 2.1110-04
ce-N+, gamma 39 2.5410-04 2.98810-01 a 7.5910-05
gamma 40 6.8010-03 3.02710-01 2.0610-03
ce-K, gamma 40 1.9510-04 1.95910-01 3.8210-05
gamma 41 2.1910-02 3.02710-01 6.6410-03
ce-K, gamma 41 6.2910-04 1.95910-01 1.2310-04
ce-L, gamma 41 1.1610-04 2.82810-01 a 3.2910-05
gamma 42 1.0210-03 3.12910-01 3.1810-04
ce-K, gamma 42 2.3410-04 2.06210-01 4.8210-05
gamma 43 3.8110-04 3.27110-01 1.2510-04
gamma 44 1.4010-02 3.30110-01 4.6110-03
ce-K, gamma 44 6.3210-03 2.23310-01 1.4110-03
ce-L, gamma 44 1.2310-03 3.10210-01 a 3.8110-04
ce-M, gamma 44 2.9710-04 3.25110-01 a 9.6610-05
ce-N+, gamma 44 1.0610-04 3.28810-01 a 3.4710-05
gamma 45 1.8110-03 3.40710-01 6.1510-04
ce-K, gamma 45 1.5210-04 2.34010-01 3.5510-05
gamma 47 1.0010-03 3.54510-01 3.5610-04
gamma 48 1.7510-03 3.57110-01 6.2510-04
ce-K, gamma 48 6.3010-04 2.50410-01 1.5810-04
ce-L, gamma 48 1.2310-04 3.37310-01 a 4.1310-05
gamma 51 5.0310-04 3.79310-01 1.9110-04
ce-K, gamma 51 1.3610-04 2.72510-01 3.7010-05
gamma 57 3.6210-04 4.07810-01 1.4810-04
gamma 71 7.3110-05 6.09010-01 4.4510-05
Kalpha1 X-ray 1.2410-02 9.08810-02 1.1310-03
Kalpha2 X-ray 7.6510-03 8.76710-02 6.7110-04
Kbeta X-ray 5.8610-03 1.02010-01 * 5.9710-04
L X-ray 3.2410-01 1.27010-02 * 4.1210-03
Auger-K 8.1910-04 6.75010-02 * 5.5310-05
Auger-L 3.7510-01 9.28010-03 * 3.4810-03

Listed X, gamma, and gamma Radiations 3.9010-02
Omitted X, gamma, and gamma Radiations** 5.9310-04
Listed beta, ce, and Auger Radiations 3.1610-02
Omitted beta, ce, and Auger Radiations** 4.9010-04
Listed alpha Radiations 4.91
Omitted alpha Radiations** 1.2510-02
Listed Radiations 4.98
Omitted Radiations** 1.3610-02

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


Actinium-227 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 Wed May 3 10:28:33 2000

Additional Views or Possible Data for the Parent 231Pa
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. (22.0 kbytes)
Table Simple HTML tables of information contained in the decay datasets (Est. size: 19.0 kbytes.)
Drawing PostScript file of the decay schemes in the Nuclear Data Sheets style (Est. size: 78.2 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 231Pa
Parent Mode
231Th beta-
231U beta+/EC
235Np alpha