121Sb Isotope Properties
Isotopic abundance 57.3(9)%

Ground state properties:
&mu = 3.3592(9) nm
Q = -0.36(4)

Excited state properties:
E = 37.133(8) keV
ER = 6.122(1) 10-3 eV
αIC =11.11(1)
σ = 2.65(10) 10-19cm2
μ = 2.518(7) nm
Q = -0.48(5)b
T1/2 = 3.46(3) ns
W = 2.1(1) mm/s


Production:
124Sn(n,γ)
124Te(n,γ)
123Sb(α,2n)
Unit Conversion:
1mm/s = 29.950(6) MHz
1mm/s = 1.2386(3) 10-7eV
Isomer Shift Scale Decay Diagram
References on the subject:

Mössbauer Effect Data Center – July 2010