ENSDF Decay Data in the MIRD
(Medical Internal Radiation Dose) Format
for 255Fm

100-FERMIUM-255
Additional Views or Possible Data
Parent Information

100-FERMIUM-255

Halflife = 20.07 Hours Nov-1999
Decay Mode: alpha
Radiations


y(i)
(Bq-s)-1


E(i)
(MeV)


y(i)E(i)

alpha 10 1.1010-03 6.807 7.4910-03
alpha recoil 1.1010-03 1.07510-01 1.1810-04
alpha 14 6.2010-03 6.892 4.2710-02
alpha recoil 6.2010-03 1.08910-01 6.7510-04
alpha 18 5.0410-02 6.963 3.5110-01
alpha recoil 5.0410-02 1.10010-01 5.5410-03
alpha 19 1.3010-03 6.983 9.0810-03
alpha recoil 1.3010-03 1.10310-01 1.4310-04
alpha 20 9.3410-01 7.022 6.56
alpha recoil 9.3410-01 1.10910-01 1.0410-01
alpha 21 5.0010-03 7.023 3.5110-02
alpha recoil 5.0010-03 1.10910-01 5.5510-04
alpha 22 4.0010-03 7.080 2.8310-02
alpha recoil 4.0010-03 1.11810-01 4.4710-04
gamma 1 1.7010-01 5.70010-04 9.6910-05
gamma 2 1.2810-03 2.30010-02 2.9410-05
ce-M, gamma 2 1.7010-01 1.62510-02 a 2.7710-03
gamma 3 8.9910-04 2.48210-02 2.2310-05
ce-M, gamma 3 3.1710-01 1.80710-02 a 5.7210-03
ce-L, gamma 4 1.2810-01 2.18110-02 a 2.7810-03
ce-M, gamma 4 3.6310-02 4.10710-02 a 1.4910-03
gamma 5 9.6210-04 5.79010-02 5.5710-05
ce-L, gamma 5 3.7210-02 3.18810-02 a 1.1910-03
ce-M, gamma 5 9.1810-03 5.11510-02 a 4.7010-04
ce-N+, gamma 5 3.6210-03 5.60910-02 a 2.0310-04
gamma 6 7.2210-03 5.84810-02 4.2210-04
ce-L, gamma 6 2.4810-01 3.24610-02 a 8.0610-03
ce-M, gamma 6 6.1510-02 5.17210-02 a 3.1810-03
ce-N+, gamma 6 2.3810-02 5.66710-02 a 1.3510-03
gamma 7 1.2010-03 6.00010-02 7.2010-05
ce-L, gamma 7 4.2010-02 3.39810-02 a 1.4310-03
ce-M, gamma 7 1.0610-02 5.32510-02 a 5.6210-04
ce-N+, gamma 7 4.0810-03 5.81910-02 a 2.3710-04
gamma 9 2.9010-04 7.30510-02 2.1210-05
ce-L, gamma 9 5.2810-03 4.70310-02 a 2.4810-04
ce-M, gamma 9 1.3310-03 6.62910-02 a 8.8410-05
gamma 10 1.9010-03 8.09210-02 1.5410-04
ce-L, gamma 10 8.3410-02 5.49010-02 a 4.5810-03
ce-M, gamma 10 2.3710-02 7.41610-02 a 1.7610-03
ce-N+, gamma 10 9.4810-03 7.91110-02 a 7.5010-04
gamma 11 8.1010-03 8.14810-02 6.6010-04
ce-L, gamma 11 3.4410-01 5.54610-02 a 1.9110-02
ce-M, gamma 11 9.8010-02 7.47210-02 a 7.3210-03
ce-N+, gamma 11 3.9210-02 7.96710-02 a 3.1210-03
gamma 16 2.8010-04 1.31010-01 3.6710-05
gamma 28 2.4010-04 2.04110-01 4.9010-05
gamma 40 5.0010-05 3.66410-01 1.8310-05
Kalpha1 X-ray 3.2210-04 1.15110-01 3.7010-05
Kalpha2 X-ray 2.0810-04 1.09910-01 2.2810-05
Kbeta X-ray 1.6710-04 1.29010-01 * 2.1510-05
L X-ray 7.1210-01 1.57010-02 * 1.1210-02
Auger-L 5.7510-01 1.12010-02 * 6.4410-03

Listed X, gamma, and gamma Radiations 1.2910-02
Omitted X, gamma, and gamma Radiations** 9.4610-05
Listed beta, ce, and Auger Radiations 7.2910-02
Listed alpha Radiations 7.03
Omitted alpha Radiations** 2.2510-02
Listed Radiations 7.12
Omitted Radiations** 2.2510-02

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


Californium-251 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 9:23:07 2000

Additional Views or Possible Data for the Parent 255Fm
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. (20.4 kbytes)
Table Simple HTML tables of information contained in the decay datasets (Est. size: 17.6 kbytes.)
Drawing PostScript file of the decay schemes in the Nuclear Data Sheets style (Est. size: 72.5 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 255Fm
Parent Mode
255Es beta-
255Md beta+/EC
259No alpha