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Isotopes of Samarium (Z=62)
Click on an isotope to get more information about its decay
Isotope	Half-life	Spin Parity	Decay Mode(s) or Abundance
¹³⁰Sm		0+
¹³¹Sm	1.2 s		%EC+%B+=100, %ECP=?
¹³²Sm	4.0 s	0+	%EC+%B+=100 , %ECP=?
¹³³Sm	3.7 s	(5/2+)	%EC+%B+=100, %ECP=?
¹³⁴Sm	10 s	0+	%EC+%B+=100
¹³⁵Sm	10.3 s	(7/2+)	%EC+%B+=100, %ECP=0.02 1
¹³⁶Sm	47 s	0+	%EC+%B+=100
¹³⁷Sm	45 s	(9/2-)	%EC+%B+=100
¹³⁸Sm	3.1 m	0+	%EC+%B+=100
¹³⁹Sm	2.57 m	(1/2)+	%EC+%B+=100
^139m1Sm	10.7 s	(11/2)-	%IT=93.7 5, %EC+%B+=6.3 5
¹⁴⁰Sm	14.82 m	0+	%EC+%B+=100
¹⁴¹Sm	10.2 m	1/2+	%EC+%B+=100
^141m1Sm	22.6 m	11/2-	%EC+%B+=99.69 3, %IT=0.31 3
¹⁴²Sm	72.49 m	0+	%EC+%B+=100
¹⁴³Sm	8.83 m	3/2+	%EC+%B+=100
^143m1Sm	66 s	11/2-	%IT=99.76 6, %EC+%B+=0.24 6
^143m2Sm	30 ms	23/2(-)	%IT=100
¹⁴⁴Sm	stable	0+	%Abundance=3.1 1
¹⁴⁵Sm	340 d	7/2-	%EC=100
¹⁴⁶Sm	1.03e8 y	0+	%A=100
¹⁴⁷Sm	1.06e+11 y	7/2-	%Abundance=15.0 2, %A=100
¹⁴⁸Sm	7e+15 y	0+	%Abundance=11.3 1, %A=100
¹⁴⁹Sm	2e+15 y	7/2-	%Abundance=13.8 1
¹⁵⁰Sm	stable	0+	%Abundance=7.4 1
¹⁵¹Sm	90 y	5/2-	%B-=100
¹⁵²Sm	stable	0+	%Abundance=26.7 2
¹⁵³Sm	46.284 h	3/2+	%B-=100
^153m1Sm	10.6 ms	11/2-	%IT=100
¹⁵⁴Sm	stable	0+	%Abundance=22.7 2
¹⁵⁵Sm	22.3 m	3/2-	%B-=100
¹⁵⁶Sm	9.4 h	0+	%B-=100
¹⁵⁷Sm	482 s	(3/2-)	%B-=100
¹⁵⁸Sm	5.30 m	0+	%B-=100
¹⁵⁹Sm	11.37 s	(5/2-)	%B-=100
¹⁶⁰Sm	9.6 s	0+	%B-=100
¹⁶¹Sm
¹⁶²Sm		0+
¹⁶³Sm
¹⁶⁴Sm		0+
¹⁶⁵Sm

Isotopes of Samarium (Z=62)