铒的同位素

**主要的鉺同位素**
標準原子質量（英语：Standard atomic weight） (Ar, 標準)	167.259(3);
←Ho（67）	Tm（69）→
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铒（原子量：167.259(3)）的同位素，其中有6個同位素是在觀測上穩定的。

圖表编辑

符號	Z（ p ）	N（ n ）	同位素質量（u）	半衰期^{[n 1]}	衰變方式^[2]^{[n 2]}	衰變產物^{[n 3]}	原子核自旋	相對豐度（莫耳分率）	相對豐度的變化量（莫耳分率）
符號	激發能量			半衰期^{[n 1]}	衰變方式^[2]^{[n 2]}	衰變產物^{[n 3]}	原子核自旋	相對豐度（莫耳分率）	相對豐度的變化量（莫耳分率）
¹⁴²Er	68	74	141.97002(54)#	10# μs	p	¹⁴¹Ho	0+
¹⁴³Er	68	75	142.96655(43)#	200# ms	β⁺	¹⁴³Ho	9/2−#
¹⁴³Er	68	75	142.96655(43)#	200# ms	β⁺, p	¹⁴²Dy	9/2−#
¹⁴⁴Er	68	76	143.96038(43)#	400# ms [>200 ns]	β⁺	¹⁴⁴Ho	0+
¹⁴⁵Er	68	77	144.95739(43)#	900(300) ms	β⁺	¹⁴⁵Ho	1/2+#
¹⁴⁵Er	68	77	144.95739(43)#	900(300) ms	β⁺, p （不常見）	¹⁴⁴Dy	1/2+#
¹⁴⁶Er	68	78	145.95200(32)#	1.7(6) s	β⁺	¹⁴⁶Ho	0+
¹⁴⁶Er	68	78	145.95200(32)#	1.7(6) s	β⁺, p	¹⁴⁵Dy	0+
¹⁴⁷Er	68	79	146.94949(32)#	~2.5 s	β⁺	¹⁴⁷Ho	(1/2+)
¹⁴⁷Er	68	79	146.94949(32)#	~2.5 s	β⁺, p	¹⁴⁶Dy	(1/2+)
^147mEr	100(50)# keV			2.5(2) s	β⁺	¹⁴⁷Ho	(11/2-)
¹⁴⁸Er	68	80	147.94455(21)#	4.6(2) s	β⁺ (99.85%)	¹⁴⁸Ho	0+
¹⁴⁸Er	68	80	147.94455(21)#	4.6(2) s	β⁺, p (.15%)	¹⁴⁷Dy	0+
¹⁴⁹Er	68	81	148.94231(3)	4(2) s	β⁺ (93%)	¹⁴⁹Ho	(1/2+)
¹⁴⁹Er	68	81	148.94231(3)	4(2) s	β⁺, p (7%)	¹⁴⁸Dy	(1/2+)
^149m1Er	741.8(2) keV			8.9(2) s	β⁺ (96.5%)	¹⁴⁹Ho	(11/2-)
					IT (3.5%)	¹⁴⁹Er
					β⁺, p (.18%)	¹⁴⁸Dy
^149m2Er	2611.1(3) keV			0.61(8) µs			(19/2+)
^149m3Er	3242.7+X keV			4.8(1) µs			(27/2-)
¹⁵⁰Er	68	82	149.937914(18)	18.5(7) s	β⁺	¹⁵⁰Ho	0+
¹⁵¹Er	68	83	150.937449(18)	23.5(13) s	β⁺	¹⁵¹Ho	(7/2-)
^151m1Er	2585.5(6) keV			580(20) ms	IT (95.3%)	¹⁵¹Er	(27/2-)
^151m1Er	2585.5(6) keV			580(20) ms	β⁺ (4.7%)	¹⁵¹Ho	(27/2-)
^151m2Er	10286+X keV			0.42(5) µs			(67/2,69/2,71/2)
¹⁵²Er	68	84	151.935050(11)	10.3(1) s	α (90%)	¹⁴⁸Dy	0+
¹⁵²Er	68	84	151.935050(11)	10.3(1) s	β⁺ (10%)	¹⁵²Ho	0+
¹⁵³Er	68	85	152.935063(9)	37.1(2) s	α (53%)	¹⁴⁹Dy	7/2(-)
¹⁵³Er	68	85	152.935063(9)	37.1(2) s	β⁺ (47%)	¹⁵³Ho	7/2(-)
¹⁵⁴Er	68	86	153.932783(6)	3.73(9) min	β⁺ (99.53%)	¹⁵⁴Ho	0+
¹⁵⁴Er	68	86	153.932783(6)	3.73(9) min	α (.47%)	¹⁵⁰Dy	0+
¹⁵⁵Er	68	87	154.933209(7)	5.3(3) min	β⁺ (99.98%)	¹⁵⁵Ho	7/2-
¹⁵⁵Er	68	87	154.933209(7)	5.3(3) min	α (.022%)	¹⁵¹Dy	7/2-
¹⁵⁶Er	68	88	155.931065(26)	19.5(10) min	β⁺	¹⁵⁶Ho	0+
¹⁵⁷Er	68	89	156.93192(3)	18.65(10) min	β⁺	¹⁵⁷Ho	3/2-
^157mEr	155.4(3) keV			76(6) ms	IT	¹⁵⁷Er	(9/2+)
¹⁵⁸Er	68	90	157.929893(27)	2.29(6) h	ε	¹⁵⁸Ho	0+
¹⁵⁹Er	68	91	158.930684(5)	36(1) min	β⁺	¹⁵⁹Ho	3/2-
^159m1Er	182.602(24) keV			337(14) ns			9/2+
^159m2Er	429.05(3) keV			590(60) ns			11/2-
¹⁶⁰Er	68	92	159.929083(26)	28.58(9) h	ε	¹⁶⁰Ho	0+
¹⁶¹Er	68	93	160.929995(10)	3.21(3) h	β⁺	¹⁶¹Ho	3/2-
^161mEr	396.44(4) keV			7.5(7) µs			11/2-
¹⁶²Er	68	94	161.928778(4)	觀測上穩定^{[n 4]}			0+	0.00139(5)
¹⁶³Er	68	95	162.930033(6)	75.0(4) min	β⁺	¹⁶³Ho	5/2-
^163mEr	445.5(6) keV			580(100) ns			(11/2-)
¹⁶⁴Er	68	96	163.929200(3)	觀測上穩定^{[n 5]}			0+	0.01601(3)
¹⁶⁵Er	68	97	164.930726(3)	10.36(4) h	ε	¹⁶⁵Ho	5/2-
¹⁶⁶Er	68	98	165.9302931(27)	觀測上穩定^{[n 6]}			0+	0.33503(36)
¹⁶⁷Er	68	99	166.9320482(27)	觀測上穩定^{[n 7]}			7/2+	0.22869(9)
^167mEr	207.801(5) keV			2.269(6) s	IT	¹⁶⁷Er	1/2-
¹⁶⁸Er	68	100	167.9323702(27)	觀測上穩定^{[n 8]}			0+	0.26978(18)
¹⁶⁹Er	68	101	168.9345904(27)	9.392(18) d	β⁻	¹⁶⁹Tm	1/2-
¹⁷⁰Er	68	102	169.9354643(30)	觀測上穩定^{[n 9]}			0+	0.14910(36)
¹⁷¹Er	68	103	170.9380298(30)	7.516(2) h	β⁻	¹⁷¹Tm	5/2-
^171mEr	198.6(1) keV			210(10) ns			1/2-
¹⁷²Er	68	104	171.939356(5)	49.3(3) h	β⁻	¹⁷²Tm	0+
¹⁷³Er	68	105	172.94240(21)#	1.434(17) min	β⁻	¹⁷³Tm	(7/2-)
¹⁷⁴Er	68	106	173.94423(32)#	3.2(2) min	β⁻	¹⁷⁴Tm	0+
¹⁷⁵Er	68	107	174.94777(43)#	1.2(3) min	β⁻	¹⁷⁵Tm	(9/2+)
¹⁷⁶Er	68	108	175.95008(43)#	20# s	β⁻	¹⁷⁶Tm	0+
¹⁷⁷Er	68	109	176.95405(54)#	3# s	β⁻	¹⁷⁷Tm	1/2-#

備註：畫上#號的數據代表沒有經過實驗的証明，只是理論推測而已，而用括號括起來的代表數據不確定性。

←	同位素列表	→
鈥的同位素	铒的同位素	銩的同位素

註釋编辑

^ Bold for isotopes with half-lives longer than the age of the universe (nearly stable)
^ Abbreviations:
ε: Electron capture
IT: Isomeric transition
^ Bold for stable isotopes, bold italics for nearly stable isotopes (half-life longer than the age of the universe)
^ Believed to undergo α decay to ¹⁵⁸Dy or β⁺β⁺ to ¹⁶²Dy with a half-life over 140×10¹² years
^ Believed to undergo α decay to ¹⁶⁰Dy or β⁺β⁺ to ¹⁶⁴Dy
^ Believed to undergo α decay to ¹⁶²Dy
^ Believed to undergo α decay to ¹⁶³Dy
^ Believed to undergo α decay to ¹⁶⁴Dy
^ Believed to undergo α decay to ¹⁶⁶Dy or β⁻β⁻ to ¹⁷⁰Yb with a half-life over 320×10¹⁵ years

参考文獻编辑

^ Meija, Juris; et al. Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.
^ 存档副本. [2015-09-20]. （原始内容存档于2017-02-19）.

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) （页面存档备份，存于互联网档案馆）. Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) （页面存档备份，存于互联网档案馆）.
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 （页面存档备份，存于互联网档案馆）, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database （页面存档备份，存于互联网档案馆） (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.

[2] Bold for isotopes with half-lives longer than the age of the universe (nearly stable)

[4] Abbreviations:
ε: Electron capture
IT: Isomeric transition

[5] Bold for stable isotopes, bold italics for nearly stable isotopes (half-life longer than the age of the universe)

[6] Believed to undergo α decay to ¹⁵⁸Dy or β⁺β⁺ to ¹⁶²Dy with a half-life over 140×10¹² years

[7] Believed to undergo α decay to ¹⁶⁰Dy or β⁺β⁺ to ¹⁶⁴Dy

[8] Believed to undergo α decay to ¹⁶²Dy

[9] Believed to undergo α decay to ¹⁶³Dy

[10] Believed to undergo α decay to ¹⁶⁴Dy

[11] Believed to undergo α decay to ¹⁶⁶Dy or β⁻β⁻ to ¹⁷⁰Yb with a half-life over 320×10¹⁵ years

[CIAAW2013-1] Meija, Juris; et al. Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[3] 存档副本. [2015-09-20]. （原始内容存档于2017-02-19）.

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