ENSDF Decay Data in the MIRD
(Medical Internal Radiation Dose) Format
for 121Te

52-TELLURIUM-121 52-TELLURIUM-121M
Additional Views or Possible Data Parent Information

52-TELLURIUM-121

Halflife = 19.16 Days May-2000
Decay Mode: EC
Radiations


y(i)
(Bq-s)-1


E(i)
(MeV)


y(i)E(i)

gamma 1 1.1710-03 3.71410-02 4.3510-05
ce-K, gamma 1 1.1210-02 6.64710-03 7.4310-05
ce-L, gamma 1 1.4510-03 3.24410-02 a 4.7110-05
ce-M, gamma 1 2.8610-04 3.61910-02 a 1.0410-05
gamma 2 2.5910-03 6.55510-02 1.7010-04
ce-K, gamma 2 4.9010-03 3.50610-02 1.7210-04
ce-L, gamma 2 8.0410-04 6.08510-02 a 4.8910-05
ce-M, gamma 2 1.5810-04 6.46010-02 a 1.0210-05
ce-N+, gamma 2 3.6310-05 6.54010-02 a 2.3710-06
gamma 3 1.4110-02 4.70510-01 6.6110-03
ce-K, gamma 3 1.1110-04 4.40010-01 4.8810-05
ce-L, gamma 3 1.5510-05 4.65810-01 a 7.2010-06
ce-M, gamma 3 3.0910-06 4.69510-01 a 1.4510-06
gamma 4 1.7710-01 5.07610-01 8.9710-02
ce-K, gamma 4 1.2710-03 4.77110-01 6.0810-04
ce-L, gamma 4 1.5710-04 5.02910-01 a 7.9110-05
gamma 5 8.0310-01 5.73110-01 4.6010-01
ce-K, gamma 5 3.6710-03 5.42610-01 1.9910-03
ce-L, gamma 5 4.9010-04 5.68410-01 a 2.7810-04
Kalpha1 X-ray 4.0310-01 2.63610-02 1.0610-02
Kalpha2 X-ray 2.1610-01 2.61110-02 5.6310-03
Kbeta X-ray 1.3810-01 2.97010-02 * 4.1110-03
L X-ray 7.4110-02 3.60010-03 * 2.6710-04
Auger-K 1.1510-01 2.18010-02 * 2.5010-03
Auger-L 8.5710-01 3.07010-03 * 2.6310-03

Listed X, gamma, and gamma Radiations 5.7710-01
Listed beta, ce, and Auger Radiations 8.5110-03
Listed Radiations 5.8610-01

*   Average Energy (MeV).
a   Maximum Energy (MeV) for subshell.


Antimony-121 Daughter is stable.





52-TELLURIUM-121M

Halflife = 154 Days May-2000
E(excitation) = 0.2940 MeV
Decay Modes: EC, IT
Radiations


y(i)
(Bq-s)-1


E(i)
(MeV)


y(i)E(i)

gamma 1 9.4210-03 3.71410-02 3.5010-04
ce-K, gamma 1 8.9810-02 6.64710-03 5.9710-04
ce-L, gamma 1 1.1710-02 3.24410-02 a 3.7810-04
ce-M, gamma 1 2.3010-03 3.61910-02 a 8.3210-05
gamma 3 7.0310-04 9.09810-01 6.4010-04
gamma 5 7.9610-04 9.98310-01 7.9410-04
gamma 8 2.5410-02 1.102 2.8010-02
Kalpha1 X-ray 8.6010-02 2.63610-02 2.2710-03
Kalpha2 X-ray 4.6010-02 2.61110-02 1.2010-03
Kbeta X-ray 2.9510-02 2.97010-02 * 8.7710-04
Auger-K 2.4510-02 2.18010-02 * 5.3410-04
Auger-L 1.8210-01 3.07010-03 * 5.5910-04
ce-K, gamma 1 3.4510-01 4.99710-02 1.7210-02
ce-L, gamma 1 4.1610-01 7.68510-02 a 3.2010-02
ce-M, gamma 1 9.8710-02 8.07810-02 a 7.9810-03
ce-N+, gamma 1 2.6510-02 8.16210-02 a 2.1610-03
gamma 2 8.1410-01 2.12210-01 1.7310-01
ce-K, gamma 2 6.1210-02 1.80410-01 1.1010-02
ce-L, gamma 2 8.0610-03 2.07210-01 a 1.6710-03
ce-M, gamma 2 1.6010-03 2.11210-01 a 3.3910-04
ce-N+, gamma 2 3.8310-04 2.12010-01 a 8.1110-05
Kalpha1 X-ray 1.8810-01 2.74710-02 5.1810-03
Kalpha2 X-ray 1.0110-01 2.72010-02 2.7510-03
Kbeta X-ray 6.5610-02 3.10010-02 * 2.0310-03
L X-ray 6.8610-02 3.77010-03 * 2.5910-04
Auger-K 5.0610-02 2.27010-02 * 1.1510-03
Auger-L 7.2710-01 3.19010-03 * 2.3210-03

Listed X, gamma, and gamma Radiations 2.1710-01
Omitted X, gamma, and gamma Radiations** 2.0010-04
Listed beta, ce, and Auger Radiations 7.8110-02
Listed Radiations 2.9510-01
Omitted Radiations** 2.0010-04

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


Antimony-121 Daughter, yield 1.1410-01, is stable.
Tellurium-121 Daughter, yield 8.8610-01, 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 Mon May 15 14:54:20 2000

Additional Views or Possible Data for the Parent 121Te
CSISRS Experimental neutron-induced reaction data in the Exchange Format (EXFOR)
121Te CS List production cross section datasets
121mTe 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. (11.3 kbytes)
Table Simple HTML tables of information contained in the decay datasets (Est. size: 9.8 kbytes.)
Drawing PostScript file of the decay schemes in the Nuclear Data Sheets style (Est. size: 40.2 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 121Te
Parent Mode
121Te IT
121I beta+/EC