釤嘅同位素

釤有50個同位素，其中3個係穩定嘅。

圖表

符號	Z（p）	N（n）	質量（u）	半衰期	原子核自旋	相對豐度	相對豐度嘅變化率
符號	激發能量			半衰期	原子核自旋	相對豐度	相對豐度嘅變化率
¹²⁸Sm	62	66	127.95808(54)#	0.5# s	0+
¹²⁹Sm	62	67	128.95464(54)#	550(100) ms	5/2+#
¹³⁰Sm	62	68	129.94892(43)#	1# s	0+
¹³¹Sm	62	69	130.94611(32)#	1.2(2) s	5/2+#
¹³²Sm	62	70	131.94069(32)#	4.0(3) s	0+
¹³³Sm	62	71	132.93867(21)#	2.90(17) s	(5/2+)
¹³⁴Sm	62	72	133.93397(21)#	10(1) s	0+
¹³⁵Sm	62	73	134.93252(17)	10.3(5) s	(7/2+)
^135mSm	0(300)# keV			2.4(9) s	(3/2+,5/2+)
¹³⁶Sm	62	74	135.928276(13)	47(2) s	0+
^136mSm	2264.7(11) keV			15(1) µs	(8-)
¹³⁷Sm	62	75	136.92697(5)	45(1) s	(9/2-)
^137mSm	180(50)# keV			20# s	1/2+#
¹³⁸Sm	62	76	137.923244(13)	3.1(2) min	0+
¹³⁹Sm	62	77	138.922297(12)	2.57(10) min	1/2+
^139mSm	457.40(22) keV			10.7(6) s	11/2-
¹⁴⁰Sm	62	78	139.918995(13)	14.82(12) min	0+
¹⁴¹Sm	62	79	140.918476(9)	10.2(2) min	1/2+
^141mSm	176.0(3) keV			22.6(2) min	11/2-
¹⁴²Sm	62	80	141.915198(6)	72.49(5) min	0+
¹⁴³Sm	62	81	142.914628(4)	8.75(8) min	3/2+
^143m1Sm	753.99(16) keV			66(2) s	11/2-
^143m2Sm	2793.8(13) keV			30(3) ms	23/2(-)
¹⁴⁴Sm	62	82	143.911999(3)	穩定	0+	0.0307(7)
^144mSm	2323.60(8) keV			880(25) ns	6+
¹⁴⁵Sm	62	83	144.913410(3)	340(3) d	7/2-
^145mSm	8786.2(7) keV			990(170) ns [0.96(+19-15) µs]	(49/2+)
¹⁴⁶Sm	62	84	145.913041(4)	1.03(5)E+8 a	0+
¹⁴⁷Sm	62	85	146.9148979(26)	1.06(2)E+11 a	7/2-	0.1499(18)
¹⁴⁸Sm	62	86	147.9148227(26)	7(3)E+15 a	0+	0.1124(10)
¹⁴⁹Sm	62	87	148.9171847(26)	穩定 [>2E+15 a]	7/2-	0.1382(7)
¹⁵⁰Sm	62	88	149.9172755(26)	穩定	0+	0.0738(1)
¹⁵¹Sm	62	89	150.9199324(26)	90(8) a	5/2-
^151mSm	261.13(4) keV			1.4(1) µs	(11/2)-
¹⁵²Sm	62	90	151.9197324(27)	穩定	0+	0.2675(16)
¹⁵³Sm	62	91	152.9220974(27)	46.284(4) h	3/2+
^153mSm	98.37(10) keV			10.6(3) ms	11/2-
¹⁵⁴Sm	62	92	153.9222093(27)	穩定 [>2.3E+18 a]	0+	0.2275(29)
¹⁵⁵Sm	62	93	154.9246402(28)	22.3(2) min	3/2-
¹⁵⁶Sm	62	94	155.925528(10)	9.4(2) h	0+
^156mSm	1397.55(9) keV			185(7) ns	5-
¹⁵⁷Sm	62	95	156.92836(5)	8.03(7) min	(3/2-)
¹⁵⁸Sm	62	96	157.92999(8)	5.30(3) min	0+
¹⁵⁹Sm	62	97	158.93321(11)	11.37(15) s	5/2-
¹⁶⁰Sm	62	98	159.93514(21)#	9.6(3) s	0+
¹⁶¹Sm	62	99	160.93883(32)#	4.8(8) s	7/2+#
¹⁶²Sm	62	100	161.94122(54)#	2.4(5) s	0+
¹⁶³Sm	62	101	162.94536(75)#	1# s	1/2-#
¹⁶⁴Sm	62	102	163.94828(86)#	500# ms	0+
¹⁶⁵Sm	62	103	164.95298(97)#	200# ms	5/2-#

備註：有#嘅數據代表冇經過實驗嘅證明，只係理論推測，而用咗括號括係代表數據唔確定。

參攷

Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.

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