자연계에 존재하는 루테튬의 동위 원소는 175Lu, 176Lu이 존재한다. 이들 중 176Lu은 반감기가 385억년인 방사성 동위 원소로 루테튬-하프늄 연대 측정에 이용되어 태양계의 연대를 측정할 때 이용된다. 핵자수 Z(p) N(n) 동위 원소 질량 (u) 반감기 붕괴방식ε 전자 포획IT 이성질핵 전이 붕괴 생성동위 원소 핵스핀 자연계에 존재하는동위 원소범위(몰 분율) 자연계에 존재하는최대 범위(몰 분율) 들뜬 에너지 150Lu 71 79 149.97323(54)# 43(5) ms p (80%) 149Yb (2+) β+ (20%) 150Yb 150mLu 34(15) keV 80(60) µs30(+95-15) µs (1,2) 151Lu 71 80 150.96758(43)# 80.6(19) ms β+ 151Yb (11/2-) 151mLu 77(5) keV 16(1) µs (3/2+) 152Lu 71 81 151.96412(21)# 650(70) ms β+ (85%) 152Yb (5-,6-) β+, p (15%) 151Tm 153Lu 71 82 152.95877(22) 0.9(2) s β+ 153Yb 11/2- α 149Tm 153m1Lu 80(5) keV 1# s 1/2+ 153m2Lu 2502.5(4) keV >0.1 µs 23/2- 153m3Lu 2632.9(5) keV 15(3) µs 27/2- 154Lu 71 83 153.95752(22)# 1# s β+ 154Yb (2-) 154m1Lu 58(13) keV 1.12(8) s (9+) 154m2Lu >2562 keV 35(3) µs (17+) 155Lu 71 84 154.954316(22) 68.6(16) ms α (76%) 151Tm (11/2-) β+ (24%) 155Yb 155m1Lu 20(6) keV 138(8) ms α (88%) 151Tm (1/2+) β+ (12%) 155Yb 155m2Lu 1781.0(20) keV 2.70(3) ms (25/2-) 156Lu 71 85 155.95303(8) 494(12) ms α (95%) 152Tm (2)- β+ (5%) 156Yb 156mLu 220(80)# keV 198(2) ms α (94%) 152Tm (9)+ β+ (6%) 156Yb 157Lu 71 86 156.950098(20) 6.8(18) s β+ 157Yb (1/2+,3/2+) α 153Tm 157mLu 21.0(20) keV 4.79(12) s β+ (94%) 157Yb (11/2-) α (6%) 153Tm 158Lu 71 87 157.949313(16) 10.6(3) s β+ (99.09%) 158Yb 2- α (0.91%) 154Tm 159Lu 71 88 158.94663(4) 12.1(10) s β+ (99.96%) 159Yb 1/2+# α (0.04%) 155Tm 159mLu 100(80)# keV 10# s 11/2-# 160Lu 71 89 159.94603(6) 36.1(3) s β+ 160Yb 2-# α (10−4%) 156Tm 160mLu 0(100)# keV 40(1) s 161Lu 71 90 160.94357(3) 77(2) s β+ 161Yb 1/2+ 161mLu 166(18) keV 7.3(4) ms IT 161Lu (9/2-) 162Lu 71 91 161.94328(8) 1.37(2) min β+ 162Yb (1-) 162m1Lu 120(200)# keV 1.5 min β+ 162Yb 4-# IT (드묾) 162Lu 162m2Lu 300(200)# keV 1.9 min 163Lu 71 92 162.94118(3) 3.97(13) min β+ 163Yb 1/2(+) 164Lu 71 93 163.94134(3) 3.14(3) min β+ 164Yb 1(-) 165Lu 71 94 164.939407(28) 10.74(10) min β+ 165Yb 1/2+ 166Lu 71 95 165.93986(3) 2.65(10) min β+ 166Yb (6-) 166m1Lu 34.37(5) keV 1.41(10) min ε (58%) 166Yb 3(-) IT (42%) 166Lu 166m2Lu 42.9(5) keV 2.12(10) min 0(-) 167Lu 71 96 166.93827(3) 51.5(10) min β+ 167Yb 7/2+ 167mLu 0(30)# keV >1 min 1/2(-#) 168Lu 71 97 167.93874(5) 5.5(1) min β+ 168Yb (6-) 168mLu 180(110) keV 6.7(4) min β+ (95%) 168Yb 3+ IT (5%) 168Lu 169Lu 71 98 168.937651(6) 34.06(5) h β+ 169Yb 7/2+ 169mLu 29.0(5) keV 160(10) s IT 169Lu 1/2- 170Lu 71 99 169.938475(18) 2.012(20) d β+ 170Yb 0+ 170mLu 92.91(9) keV 670(100) ms IT 170Lu (4)- 171Lu 71 100 170.9379131(30) 8.24(3) d β+ 171Yb 7/2+ 171mLu 71.13(8) keV 79(2) s IT 171Lu 1/2- 172Lu 71 101 171.939086(3) 6.70(3) d β+ 172Yb 4- 172m1Lu 41.86(4) keV 3.7(5) min IT 172Lu 1- 172m2Lu 65.79(4) keV 0.332(20) µs (1)+ 172m3Lu 109.41(10) keV 440(12) µs (1)+ 172m4Lu 213.57(17) keV 150 ns (6-) 173Lu 71 102 172.9389306(26) 1.37(1) a ε 173Yb 7/2+ 173mLu 123.672(13) keV 74.2(10) µs 5/2- 174Lu 71 103 173.9403375(26) 3.31(5) a β+ 174Yb (1)- 174m1Lu 170.83(5) keV 142(2) d IT (99.38%) 174Lu 6- ε (0.62%) 174Yb 174m2Lu 240.818(4) keV 395(15) ns (3+) 174m3Lu 365.183(6) keV 145(3) ns (4-) 175Lu 71 104 174.9407718(23) 관측상 안정 7/2+ 0.9741(2) 175m1Lu 1392.2(6) keV 984(30) µs (19/2+) 175m2Lu 353.48(13) keV 1.49(7) µs 5/2- 176Lu 71 105 175.9426863(23) 3.85(7)×1010 a β- 176Hf 7- 0.0259(2) 176mLu 122.855(6) keV 3.664(19) h β- (99.9%) 176Hf 1- ε (0.095%) 176Yb 177Lu 71 106 176.9437581(23) 6.6475(20) d β- 177Hf 7/2+ 177m1Lu 150.3967(10) keV 130(3) ns 9/2- 177m2Lu 569.7068(16) keV 155(7) µs 1/2+ 177m3Lu 970.1750(24) keV 160.44(6) d β- (78.3%) 177Hf 23/2- IT (21.7%) 177Lu 177m4Lu 3900(10) keV 7(2) min6(+3-2) min 39/2- 178Lu 71 107 177.945955(3) 28.4(2) min β- 178Hf 1(+) 178mLu 123.8(26) keV 23.1(3) min β- 178Hf 9(-) 179Lu 71 108 178.947327(6) 4.59(6) h β- 179Hf 7/2(+) 179mLu 592.4(4) keV 3.1(9) ms IT 179Lu 1/2(+) 180Lu 71 109 179.94988(8) 5.7(1) min β- 180Hf 5+ 180m1Lu 13.9(3) keV ~1 s IT 180Lu 3- 180m2Lu 624.0(5) keV >=1 ms (9-) 181Lu 71 110 180.95197(32)# 3.5(3) min β- 181Hf (7/2+) 182Lu 71 111 181.95504(21)# 2.0(2) min β- 182Hf (0,1,2) 183Lu 71 112 182.95757(32)# 58(4) s β- 183Hf (7/2+) 184Lu 71 113 183.96091(43)# 20(3) s β- 184Hf (3+) 동위 원소 분류:원소별 동위 원소 목록