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Isotopes of the Element Neodymium

[Click for Main Data]         Proton Emission     Neutron Emission     Electron Emission     Positron Emission

Most of the isotope data on this site has been obtained from the National Nuclear Data Center.

Naturally Occurring Isotopes

Mass NumberNatural AbundanceHalf-life
14227.152%STABLE
14312.174%STABLE
14423.798%2.29×10+15 years
1458.293%STABLE
14617.189%STABLE
1485.756%STABLE
1505.638%0.79×1019 years

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
124No Data AvailableElectron Capture (suspected)No Data Available
1250.65 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
> 0.00%
126> 200 nanoseconds   Electron CaptureNo Data Available
Electron Capture with
delayed Proton Emission
No Data Available
1271.8 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
1285 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
1294.9 secondsElectron Capture> 0.00%
Electron Capture with
delayed Proton Emission
> 0.00%
13021 secondsElectron Capture100.00%
13125.4 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
> 0.00%
13294 secondsElectron Capture100.00%
13370 secondsElectron Capture100.00%
133m≈ 70 secondsElectron CaptureNo Data Available
Isomeric TransitionNo Data Available
1348.5 minutesElectron Capture100.00%
13512.4 minutesElectron Capture100.00%
135m5.5 minutesElectron Capture> 99.97%
Isomeric Transition< 0.03%
13650.65 minutesElectron Capture100.00%
13738.5 minutesElectron Capture100.00%
137m1.60 secondsIsomeric Transition100.00%
1385.04 hoursElectron Capture100.00%
13929.7 minutesElectron Capture100.00%
139m5.50 hoursElectron Capture88.20%
Isomeric Transition11.80%
1403.37 daysElectron Capture100.00%
140m0.60 millisecondsIsomeric Transition100.00%
1412.49 hoursElectron Capture100.00%
141m62.0 secondsIsomeric Transition100.00%
Electron Capture< 0.05%
142STABLE--
143STABLE--
1442.29×10+15 yearsAlpha Decay100.00%
145STABLE--
146STABLE--
14710.98 daysBeta-minus Decay100.00%
148STABLE--
1491.728 hoursBeta-minus Decay100.00%
1500.79×1019 yearsNo Data AvailableNo Data Available
15112.44 minutesBeta-minus Decay100.00%
15211.4 minutesBeta-minus Decay100.00%
15331.6 secondsBeta-minus Decay100.00%
15425.9 secondsBeta-minus Decay100.00%
1558.9 secondsBeta-minus Decay100.00%
1565.06 secondsBeta-minus Decay100.00%
157> 100 nanosecondsBeta-minus Decay (suspected)No Data Available
158> 50 nanosecondsBeta-minus Decay100.00%
159No Data AvailableBeta-minus Decay (suspected)No Data Available
160No Data AvailableBeta-minus Decay (suspected)No Data Available
161No Data AvailableBeta-minus Decay (suspected)   No Data Available