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Europium-153

Properties and data of the isotope 153Eu.

Contents
General Data
NMR Data
Isotones und Isobares

See also: list of Europium isotopes.

 

General data

Name of the isotope:Europium-153; Eu-153Symbol:153Eu or 15363EuMass number A:153 (= number of nucleons)Atomic number Z:63 (= number of protons)Neutrons N:90Isotopic mass:152.92124(2) u (atomic weight of Europium-153)Nuclide mass:152.8866822 u (calculated nuclear mass without electrons)Mass excess:-73.36447 MeVMass defect:1.351579456 u (per nucleus)Nuclear binding energy:1258.98815379 MeV (per nucleus)
8.22868074 MeV (average binding energy per nucleon)Separation energy:SN = 8.55028(12) MeV (first neutron)
SP = 5.8936(7) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)5/2+Magnetic dipole moment:μ(μN) = + 1.5324(3)Charge radius:5.1115(62) femtometer fmYear of discovery:1933

 

Occurrence

Comparison of the natural Europium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

 

Atomic Mass maQuantityHalf-lifeSpin
Europium
Isotopic mixture		151.964 u100 %
Isotope 151Eu150.9198566(13) u47.81(6) %1.7 × 1018 a5/2+
Isotope 153Eu152.92124(2) u52.19(6) %stable5/2+

 

NMR data

Nuclear magnetic properties of the NMR active Nuclide 153Eu

Isotope:153Eu-NMRQuantity:52.19(6) %Spin:5/2+Nuclearmagnetic moment
μ/μN:+ 1.5324(3)Gyromagnetic ratio γ:2.9371 · 107 rad T-1 s-1Nuclear g-factor:gl = 0.61296Quadrupole moment Q:2.412(21) barn (100 fm2)Line width parameter (factor):l = 18616.78 fm4Resonance frequency:v0 = 4.6745 at 1 TRelative Sensitivity:0.01544 (H0 = const.)
1.2809 (v0 = const.)
[related to 1H = 1.000]

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
153mEu1771.0(4) keV475(19) ns19/2-

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 90) and isobaric (same nucleon number A = 153) with Europium-153. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 90Isobar A = 153
51141Sb
52142Te
53143I
54144Xe
55145Cs
56146Ba153Ba
57147La153La
58148Ce153Ce
59149Pr153Pr
60150Nd153Nd
61151Pm153Pm
62152Sm153Sm
63153Eu153Eu
64154Gd153Gd
65155Tb153Tb
66156Dy153Dy
67157Ho153Ho
68158Er153Er
69159Tm153Tm
70160Yb153Yb
71161Lu153Lu
72162Hf153Hf
73163Ta
74164W
75165Re
76166Os
77167Ir
78168Pt

 

External data and identifiers

Adopted Levels, Gammas:NuDat 153Eu

 

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Last update: 2020-10-20

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