38-Sr-99
Spin
Level energy(keV) Spin & Parity
----------------------------------------
ground state 3/2+
Mass (The Ame2012 atomic mass evaluation (II) by M.Wang, G.Audi, A.H.Wapstra, F.G.Kondev, M.MacCormick, X.Xu, and B.Pfeiffer
Chinese Physics C36 p. 1603-2014, December 2012)
98.932890666 ± 0.000003824 (amu) [mass excess = -62511.942 ± 3.562 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
8143.760 ± 7.641 (keV)
Strong Gamma-rays from Decay of Sr- 99 (Compiled from ENSDF as of March 2011)
[ Intensities before May 23th of 2013 were values when total intensity of the decay mode was 100(%) and a branching ratio of each decay mode was not multiplied. ]
γ-ray energy(keV) Intensity(%) Decay mode
----------------------------------------------------------
125.12 16.1 B-
536.12 14.01 B-
1198.12 9.18 B-
----------------------------------------------------------
*: relative, ~ approximate, ? calculated or estimatted
>: greater than or equal to, <: less than or equal to
[ Intensities; total intensity of the nuclide is 100(%). ]
Decay data(Chart of the Nuclides 2014)
Decay mode Half-life
B- 270 MS 10
Evaluated Data Libraries
Links to the libraries.
Parent Nuclides by Reactions in JENDL-4.0
Fission Yields for Fission Products in JENDL-4.0 Fission Yield Data
- Neutron-induced Fission Yields (from main actinide nuclides) - Independent Fission Yield -
Product Nuclide Energy Fission Yield Uncertainty(1σ)
-----------------------------------------------------------
Sr- 99 U-235 Thermal 1.329560e-03 1.462510e-04
Sr- 99 U-235 Fast 2.153930e-03 1.378520e-03
Sr- 99 U-235 High 7.530950e-04 4.819810e-04
Sr- 99 U-238 Fast 9.775340e-03 6.256220e-03
Sr- 99 U-238 High 4.325010e-03 2.768010e-03
Sr- 99 Pu-239 Thermal 3.746450e-04 2.397720e-04
Sr- 99 Pu-239 Fast 4.858160e-04 3.109220e-04
Sr- 99 Pu-239 High 3.728620e-04 2.386320e-04
Sr- 99 Pu-241 Thermal 1.560790e-03 9.989090e-04
Sr- 99 Pu-241 Fast 2.153180e-03 1.378030e-03
-----------------------------------------------------------
Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
- Neutron-induced Fission Yields (from main actinide nuclides) - Cumulative Fission Yield -
Product Nuclide Energy Fission Yield Uncertainty(1σ)
-----------------------------------------------------------
Sr- 99 U-235 Thermal 1.350790e-03 1.477180e-04
Sr- 99 U-235 Fast 2.154730e-03 1.379030e-03
Sr- 99 U-235 High 7.560490e-04 4.834270e-04
Sr- 99 U-238 Fast 9.923350e-03 4.473560e-03
Sr- 99 U-238 High 4.450480e-03 2.848310e-03
Sr- 99 Pu-239 Thermal 3.749640e-04 2.399780e-04
Sr- 99 Pu-239 Fast 4.862210e-04 3.111820e-04
Sr- 99 Pu-239 High 3.748890e-04 2.399290e-04
Sr- 99 Pu-241 Thermal 1.561630e-03 9.993530e-04
Sr- 99 Pu-241 Fast 2.154550e-03 1.378910e-03
-----------------------------------------------------------
Thermal=0.0253eV, Fast=500keV(Fast reactor spectrum), High=14MeV
→ Neutron-induced and Spontaneous Fission Yields of all nuclides in JENDL-4.0 Fission Yield Data