ENSDF Decay Data in the MIRD
(Medical Internal Radiation Dose) Format
for 254Es

99-EINSTEINIUM-254 99-EINSTEINIUM-254M
Additional Views or Possible Data Parent Information

99-EINSTEINIUM-254

Halflife = 275.7 Days Feb-1990 (beta-), Nov-1996 (alpha)
Decay Modes: alpha, beta-
Radiations


y(i)
(Bq-s)-1


E(i)
(MeV)


y(i)E(i)

alpha 2 1.6010-03 6.048 9.6810-03
alpha recoil 1.6010-03 9.59210-02 1.5310-04
alpha 3 3.4010-03 6.105 2.0810-02
alpha recoil 3.4010-03 9.68210-02 3.2910-04
alpha 8 2.2010-03 6.266 1.3810-02
alpha recoil 2.2010-03 9.93710-02 2.1910-04
alpha 9 1.4010-03 6.276 8.7910-03
alpha recoil 1.4010-03 9.95310-02 1.3910-04
alpha 11 7.5010-03 6.347 4.7610-02
alpha recoil 7.5010-03 1.00710-01 7.5510-04
alpha 12 2.6010-02 6.359 1.6510-01
alpha recoil 2.6010-02 1.00810-01 2.6210-03
alpha 15 1.8010-02 6.416 1.1510-01
alpha recoil 1.8010-02 1.01810-01 1.8310-03
alpha 16 9.3110-01 6.429 5.99
alpha recoil 9.3110-01 1.02010-01 9.4910-02
alpha 18 2.3010-03 6.479 1.4910-02
alpha recoil 2.3010-03 1.02810-01 2.3610-04
gamma 1 3.0010-01 1.10010-03 3.3010-04
gamma 2 9.6010-01 8.00010-03 7.6810-03
gamma 3 3.0010-01 3.44010-02 1.0310-02
ce-L, gamma 4 5.0410-01 1.02310-02 a 5.1610-03
ce-M, gamma 4 1.4710-01 2.89510-02 a 4.2610-03
gamma 5 1.00 4.26010-02 4.2610-02
ce-L, gamma 5 7.3010-01 1.73310-02 a 1.2710-02
gamma 6 2.0010-02 6.30010-02 1.2610-03
ce-L, gamma 6 7.2610-03 3.77310-02 a 2.7410-04
ce-M, gamma 6 1.8210-03 5.64510-02 a 1.0310-04
ce-N+, gamma 6 6.4610-04 6.12510-02 a 3.9610-05
gamma 7 1.0010-02 6.97010-02 6.9710-04
gamma 8 3.0010-02 7.04010-02 2.1110-03
gamma 9 5.0010-03 8.08010-02 4.0410-04
gamma 10 5.0010-03 8.51010-02 4.2510-04
ce-L, gamma 12 4.7410-04 1.24710-01 a 5.9210-05
gamma 15 3.0010-04 2.78010-01 8.3410-05
gamma 17 7.0010-04 3.04010-01 2.1310-04
gamma 18 1.5010-03 3.16010-01 4.7410-04
gamma 21 5.0010-04 3.85010-01 1.9310-04
L X-ray 6.7810-01 1.53010-02 * 1.0410-02
Auger-L 5.6410-01 1.09010-02 * 6.1410-03

Listed X, gamma, and gamma Radiations 7.7210-02
Omitted X, gamma, and gamma Radiations** 2.8110-04
Listed beta, ce, and Auger Radiations 2.8710-02
Omitted beta, ce, and Auger Radiations** 2.7810-05
Listed alpha Radiations 6.38
Omitted alpha Radiations** 1.9710-02
Listed Radiations 6.49
Omitted Radiations** 2.0110-02

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


Berkelium-250 Daughter is radioactive.
Fermium-254 Daughter, yield 1.7410-06, is radioactive.









99-EINSTEINIUM-254M

Halflife = 39.3 Hours Feb-1990
E(excitation) = 0.0780 MeV
Decay Modes: alpha, EC, beta-
Radiations


y(i)
(Bq-s)-1


E(i)
(MeV)


y(i)E(i)

alpha 1 5.2810-06 6.280 3.3210-05
alpha recoil 5.2810-06 1.34810-05 7.1210-11
alpha 2 1.5810-05 6.297 9.9710-05
alpha recoil 1.5810-05 1.35110-05 2.1410-10
alpha 3 7.2610-05 6.325 4.5910-04
alpha recoil 7.2610-05 1.35710-05 9.8510-10
alpha 4 2.7410-04 6.357 1.7410-03
alpha recoil 2.7410-04 1.36410-05 3.7410-09
alpha 5 2.4710-03 6.382 1.5810-02
alpha recoil 2.4710-03 1.36910-05 3.3910-08
alpha 6 5.9410-05 6.415 3.8110-04
alpha recoil 5.9410-05 1.37710-05 8.1810-10
alpha 7 3.9610-06 6.455 2.5610-05
alpha recoil 3.9610-06 1.38510-05 5.4810-11
alpha 8 2.0510-05 6.463 1.3210-04
alpha recoil 2.0510-05 1.38710-05 2.8410-10
alpha 10 4.6210-05 6.513 3.0110-04
alpha recoil 4.6210-05 1.39810-05 6.4610-10
alpha 11 1.9110-04 6.557 1.2610-03
alpha recoil 1.9110-04 1.40710-05 2.6910-09
alpha 12 1.3210-04 6.591 8.7010-04
alpha recoil 1.3210-04 1.41410-05 1.8710-09
beta- 1 1.5710-01 1.25010-01 * 1.9610-02
beta- 2 5.4910-01 1.37610-01 * 7.5510-02
beta- 3 4.9010-03 3.23310-01 * 1.5810-03
beta- 4 9.8010-02 3.61010-01 * 3.5410-02
beta- 5 1.7610-01 3.77410-01 * 6.6610-02
ce-L, gamma 2 4.1310-01 1.74010-02 a 7.1910-03
ce-M, gamma 2 1.1910-01 3.77810-02 a 4.4910-03
ce-L, gamma 3 2.8110-02 7.67710-02 a 2.1610-03
ce-M, gamma 3 8.0810-03 9.71510-02 a 7.8510-04
ce-N+, gamma 3 3.2710-03 1.02410-01 a 3.3510-04
gamma 4 8.8210-03 5.44510-01 4.8010-03
gamma 5 2.8410-02 5.84310-01 1.6610-02
ce-K, gamma 5 8.5310-04 4.42310-01 3.7710-04
ce-L, gamma 5 4.8310-04 5.56710-01 a 2.6910-04
gamma 6 2.8410-01 6.48810-01 1.8410-01
ce-K, gamma 6 7.3910-03 5.06810-01 3.7510-03
ce-L, gamma 6 3.6910-03 6.21210-01 a 2.3010-03
ce-M+, gamma 6 1.1410-03 6.44210-01 a 7.3210-04
gamma 7 1.2210-01 6.88710-01 8.4410-02
ce-K, gamma 7 2.8210-03 5.46710-01 1.5410-03
ce-L, gamma 7 1.2310-03 6.61110-01 a 8.1010-04
ce-M+, gamma 7 3.6810-04 6.84110-01 a 2.5110-04
gamma 8 2.4310-01 6.93810-01 1.6910-01
ce-K, gamma 8 5.6010-03 5.51810-01 3.0910-03
ce-L, gamma 8 2.4610-03 6.66210-01 a 1.6410-03
Kalpha1 X-ray 7.5510-03 1.21110-01 9.1410-04
Kalpha2 X-ray 4.9410-03 1.15310-01 5.6910-04
Kbeta X-ray 4.0210-03 1.36010-01 * 5.4710-04
L X-ray 2.6210-01 1.64010-02 * 4.3010-03
Auger-L 2.0010-01 1.16010-02 * 2.3210-03

Listed X, gamma, and gamma Radiations 4.6510-01
Omitted X, gamma, and gamma Radiations** 6.7410-04
Listed beta, ce, and Auger Radiations 3.2010-02
Omitted beta, ce, and Auger Radiations** 4.8210-04
Listed alpha Radiations 2.1110-02
Omitted alpha Radiations** 1.7110-05
Listed Radiations 5.1810-01
Omitted Radiations** 1.1710-03

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


Berkelium-250 Daughter, yield 3.3010-03, is radioactive.
Californium-254 Daughter, yield 7.8010-04, is radioactive.
Fermium-254 Daughter, yield 9.8010-01, 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 9:19:07 2000

Additional Views or Possible Data for the Parent 254Es
CSISRS Experimental neutron-induced reaction data in the Exchange Format (EXFOR)
254Es CS List production cross section datasets
254mEs 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. (20.6 kbytes)
Table Simple HTML tables of information contained in the decay datasets (Est. size: 17.8 kbytes.)
Drawing PostScript file of the decay schemes in the Nuclear Data Sheets style (Est. size: 73.4 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 254Es
Parent Mode
258Md alpha