툴륨 동위 원소

자연계에 존재하는 툴륨의 안정 동위 원소는 1종으로 ¹⁶⁹Tm이 100% 존재한다.

인공적으로 만들어진 툴륨의 동위 원소는 ¹⁴⁵Tm부터 ¹⁷⁹Tm까지 합성되었다. 이들 중 ¹⁷¹Tm의 반감기가 1.92년으로 가장 길다.

표

핵자 수	Z(p)	N(n)	동위 원소 질량 (u)	반감기	붕괴 방식[1][n 1]	붕괴 생성 동위 원소[n 2]	핵 스핀	자연계에 존재하는 동위 원소 범위 (몰 분율)	자연계에 존재하는 최대 범위 (몰 분율)
	들뜬 에너지
^145Tm	69	76	144.97007(43)#	3.1(3) µs			(11/2-)
^146Tm	69	77	145.96643(43)#	240(30) ms	p	^145Er	(6-)
					β^+ (드묾)	^146Er
^146mTm	71(6) keV			72(23) ms	p	^145Er	(10+)
					β^+ (드묾)	^146Er
^147Tm	69	78	146.96096(32)#	0.58(3) s	β^+ (85%)	^147Er	11/2-
					p (15%)	^146Er
^147mTm	60(5) keV			360(40) µs			3/2+
^148Tm	69	79	147.95784(43)#	0.7(2) s	β^+	^148Er	(10+)
^148mTm				0.7 s
^149Tm	69	80	148.95272(32)#	0.9(2) s	β^+ (99.74%)	^149Er	(11/2-)
					β^+, p (0.26%)	^148Ho
^150Tm	69	81	149.94996(21)#	3# s	β^+	^150Er	(1+)
^150m1Tm	140(140)# keV			2.20(6) s	β^+ (98.8%)	^150Er	(6-)
					β^+, p (1.2%)	^149Ho
^150m2Tm	810(140)# keV			5.2(3) ms			(10+)
^151Tm	69	82	150.945483(22)	4.17(10) s	β^+	^151Er	(11/2-)
^151m1Tm	92(7) keV			6.6(14) s	β^+	^151Er	(1/2+)
^151m2Tm	2655.67(22) keV			451(24) ns			(27/2-)
^152Tm	69	83	151.94442(8)	8.0(10) s	β^+	^152Er	(2#)-
^152m1Tm	100(80)# keV			5.2(6) s	β^+	^152Er	(9)+
^152m2Tm	2555.05(19)+X keV			294(12) ns			(17+)
^153Tm	69	84	152.942012(20)	1.48(1) s	α (91%)	^149Ho	(11/2-)
					β^+ (9%)	^153Er
^153mTm	43.2(2) keV			2.5(2) s	α (92%)	^149Ho	(1/2+)
					β^+ (8%)	^153Er
^154Tm	69	85	153.941568(15)	8.1(3) s	β^+ (56%)	^154Er	(2-)
					α (44%)	^150Ho
^154mTm	70(50) keV			3.30(7) s	α (90%)	^150Ho	(9+)
					β^+ (10%)	^154Er
^155Tm	69	86	154.939199(14)	21.6(2) s	β^+ (98.1%)	^155Er	(11/2-)
					α (1.9%)	^151Ho
^155mTm	41(6) keV			45(3) s	β^+ (92%)	^155Er	(1/2+)
					α (8%)	^151Ho
^156Tm	69	87	155.938980(17)	83.8(18) s	β^+ (99.93%)	^156Er	2-
					α (0.064%)	^152Er
^156mTm	203.6(5) keV			~400 ns			(11-)
^157Tm	69	88	156.93697(3)	3.63(9) min	β^+	^157Er	1/2+
^158Tm	69	89	157.936980(27)	3.98(6) min	β^+	^158Er	2-
^158mTm	50(100)# keV			~20 ns			(5+)
^159Tm	69	90	158.93498(3)	9.13(16) min	β^+	^159Er	5/2+
^160Tm	69	91	159.93526(4)	9.4(3) min	β^+	^160Er	1-
^160m1Tm	70(20) keV			74.5(15) s	IT (85%)	^160Tm	5(+#)
					β^+ (15%)	^160Er
^160m2Tm	98.2+X keV			~200 ns			(8)
^161Tm	69	92	160.93355(3)	30.2(8) min	β^+	^161Er	7/2+
^161m1Tm	7.4(2) keV			5# min			1/2+
^161m2Tm	78.20(3) keV			110(3) ns			7/2-
^162Tm	69	93	161.933995(28)	21.70(19) min	β^+	^162Er	1-
^162mTm	130(40) keV			24.3(17) s	IT (82%)	^162Tm	5+
					β^+ (18%)	^162Er
^163Tm	69	94	162.932651(6)	1.810(5) h	β^+	^163Er	1/2+
^164Tm	69	95	163.93356(3)	2.0(1) min	β^+	^164Er	1+
^164mTm	10(6) keV			5.1(1) min	IT (80%)	^164Tm	6-
					β^+ (20%)	^164Er
^165Tm	69	96	164.932435(4)	30.06(3) h	β^+	^165Er	1/2+
^166Tm	69	97	165.933554(13)	7.70(3) h	β^+	^166Er	2+
^166mTm	122(8) keV			340(25) ms	IT	^166Tm	6-
^167Tm	69	98	166.9328516(29)	9.25(2) d	ε	^167Er	1/2+
^167m1Tm	179.480(19) keV			1.16(6) µs			(7/2)+
^167m2Tm	292.820(20) keV			0.9(1) µs			7/2-
^168Tm	69	99	167.934173(3)	93.1(2) d	β^+ (99.99%)	^168Er	3+
					β^- (0.01%)	^168Yb
^169Tm	69	100	168.9342133(27)	안정[n 3]			1/2+	1.0000
^170Tm	69	101	169.9358014(27)	128.6(3) d	β^- (99.86%)	^170Yb	1-
					ε (0.14%)	^170Er
^170mTm	183.197(4) keV			4.12(13) µs			(3)+
^171Tm	69	102	170.9364294(28)	1.92(1) a	β^-	^171Yb	1/2+
^171mTm	424.9560(15) keV			2.60(2) µs			7/2-
^172Tm	69	103	171.938400(6)	63.6(2) h	β^-	^172Yb	2-
^173Tm	69	104	172.939604(5)	8.24(8) h	β^-	^173Yb	(1/2+)
^173mTm	317.73(20) keV			10(3) µs			(7/2-)
^174Tm	69	105	173.94217(5)	5.4(1) min	β^-	^174Yb	(4)-
^175Tm	69	106	174.94384(5)	15.2(5) min	β^-	^175Yb	(1/2+)
^176Tm	69	107	175.94699(11)	1.85(3) min	β^-	^176Yb	(4+)
^177Tm	69	108	176.94904(32)#	90(6) s	β^-	^177Yb	(7/2-)
^178Tm	69	109	177.95264(43)#	30# s	β^-	^178Yb
^179Tm	69	110	178.95534(54)#	20# s	β^-	^179Yb	1/2+#

1. 약어:
   ε: 전자 포획
   IT: 이성질핵 전이
2. 안정 동위 원소는 굵은 글씨로 표기.
3. α 붕괴를 통해 ¹⁶⁵Ho으로 붕괴할 수 있다.

각주

1. http://www.nucleonica.net/unc.aspx