151Eu Isotope Properties
Isotopic abundance 47.8(5)%

Ground state properties:
μ = 3.4717(6) nm
Q = 0.903(10) b

Excited state properties:
E = 21.541418(10) keV
ER = 1.650411(8) 10-3 eV
αIC =28.6(1)
σ = 3.86(5) 10-20cm2
μ = 2.591(2) nm
Q = 1.28(2) b
T1/2 = 9.6(3) ns
W = 1.3(3) mm/s


Production:
150Sm(n,γ)151Sm
151Eu(p,n)151Gd
151Eu(d,2n)151Gd
Unit Conversion:
1mm/s = 17.374326(8) MHz
1mm/s = 7.185440(3) 10-8eV
Isomer Shift Scale Decay Diagram

153Eu Isotope Properties
Isotopic abundance 52.2(5)%

Ground state properties:
μ = 1.5324(3) nm
Q = 2.412(21) b

Excited state properties:
E = 83.36728(13) keV
ER = 2.439571(4) 10-3 eV
αIC =3.82(4)
σ = 7.30(6) 10-20cm2
μ = 1.81(6) nm
Q = 0.44(2) b
T1/2 = 0.793(17) ns
W = 4.1(6) mm/s


Unit Conversion:
1mm/s = 67.2403(1) MHz
1mm/s = 2.780830(4) 10-7eV
Decay Diagram
Mössbauer Effect Data Center – July 2010