Vissza Astrojan csillagászati képgyűjteményhez

Isotopes of the Element Osmium

[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
1840.02%> 5.6×1013 years
1861.59%2.0×10+15 years
1871.96%STABLE
18813.24%STABLE
18916.15%STABLE
19026.26%STABLE
19240.78%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
1610.64 millisecondsAlpha Decay100.00%
1622.1 millisecondsAlpha Decay~ 99.00%
1635.5 millisecondsAlpha Decay100.00%
Electron CaptureNo Data Available
16421 millisecondsAlpha Decay98.00%
Electron Capture2.00%
16571 millisecondsElectron Capture< 40.00%
Alpha Decay> 60.00%
166199 millisecondsAlpha Decay72.00%
Electron Capture18.00%
1670.81 secondsAlpha Decay57.00%
Electron Capture43.00%
1682.1 secondsElectron Capture57.00%
Alpha Decay43.00%
1693.43 secondsElectron Capture86.30%
Alpha Decay13.70%
1707.37 secondsAlpha Decay9.50%
Electron Capture90.50%
1718.3 secondsElectron Capture98.20%
Alpha Decay1.80%
17219.2 secondsElectron Capture99.80%
Alpha Decay0.20%
17322.4 secondsElectron CaptureNo Data Available
Alpha Decay0.4%
17444 secondsElectron Capture99.98%
Alpha Decay0.02%
1751.4 minutesElectron Capture100.00%
1763.6 minutesElectron Capture100.00%
1773.0 minutesElectron Capture100.00%
1785.0 minutesElectron Capture100.00%
Alpha DecayNo Data Available
1796.5 minutesElectron Capture100.00%
18021.5 minutesElectron Capture100.00%
181105 minutesElectron Capture100.00%
181m2.7 minutesElectron Capture100.00%
Isomeric Transition<= 3.00%
18221.84 hoursElectron Capture100.00%
182m0.78 millisecondsIsomeric Transition100.00%
18313.0 hoursElectron Capture100.00%
183m9.9 hoursElectron Capture85.00%
Isomeric Transition15.00%
184> 5.6×1013 yearsAlpha DecayNo Data Available
18593.6 daysElectron Capture100.00%
1862.0×10+15 yearsAlpha Decay100.00%
187STABLE--
188STABLE--
189STABLE--
189m5.81 hoursIsomeric Transition100.00%
190STABLE--
190m9.9 minutesIsomeric Transition100.00%
19115.4 daysBeta-minus Decay100.00%
191m13.10 hoursIsomeric Transition100.00%
192STABLE--
192m5.9 secondsIsomeric Transition> 87.00%
Beta-minus Decay< 13.00%
19330.11 hoursBeta-minus Decay100.00%
1946.0 yearsBeta-minus Decay100.00%
195≈ 9 minutesBeta-minus DecayNo Data Available
19634.9 minutesBeta-minus Decay100.00%
1972.8 minutesBeta-minus Decay100.00%
198No Data AvailableBeta-minus Decay100.00%
1995 secondsBeta-minus Decay100.00%
2006 secondsBeta-minus Decay100.00%
201> 300 nanosecondsBeta-minus Decay (suspected)No Data Available
202> 300 nanoseconds   Beta-minus Decay (suspected)   No Data Available