ハフニウム(Hf)の標準原子量は178.49(2) uである。
一覧
| 同位体核種 | Z(p) | N(n) | 同位体質量 (u) | 半減期 | 核スピン数 | 天然存在比 | 天然存在比
(範囲) |
| 励起エネルギー |
| 153Hf | 72 | 81 | 152.97069(54)# | 400# ms [>200 ns] | 1/2+# | | |
| 153mHf | 750(100)# keV | 500# ms | 11/2-# | | |
| 154Hf | 72 | 82 | 153.96486(54)# | 2(1) s | 0+ | | |
| 155Hf | 72 | 83 | 154.96339(43)# | 890(120) ms | 7/2-# | | |
| 156Hf | 72 | 84 | 155.95936(22) | 23(1) ms | 0+ | | |
| 156mHf | 1959.0(10) keV | 480(40) µs | 8+ | | |
| 157Hf | 72 | 85 | 156.95840(21)# | 115(1) ms | 7/2- | | |
| 158Hf | 72 | 86 | 157.954799(19) | 2.84(7) s | 0+ | | |
| 159Hf | 72 | 87 | 158.953995(18) | 5.20(10) s | 7/2-# | | |
| 160Hf | 72 | 88 | 159.950684(12) | 13.6(2) s | 0+ | | |
| 161Hf | 72 | 89 | 160.950275(24) | 18.2(5) s | 3/2-# | | |
| 162Hf | 72 | 90 | 161.94721(1) | 39.4(9) s | 0+ | | |
| 163Hf | 72 | 91 | 162.94709(3) | 40.0(6) s | 3/2-# | | |
| 164Hf | 72 | 92 | 163.944367(22) | 111(8) s | 0+ | | |
| 165Hf | 72 | 93 | 164.94457(3) | 76(4) s | (5/2-) | | |
| 166Hf | 72 | 94 | 165.94218(3) | 6.77(30) min | 0+ | | |
| 167Hf | 72 | 95 | 166.94260(3) | 2.05(5) min | (5/2)- | | |
| 168Hf | 72 | 96 | 167.94057(3) | 25.95(20) min | 0+ | | |
| 169Hf | 72 | 97 | 168.94126(3) | 3.24(4) min | (5/2)- | | |
| 170Hf | 72 | 98 | 169.93961(3) | 16.01(13) h | 0+ | | |
| 171Hf | 72 | 99 | 170.94049(3) | 12.1(4) h | 7/2(+) | | |
| 171mHf | 21.93(9) keV | 29.5(9) s | 1/2(-) | | |
| 172Hf | 72 | 100 | 171.939448(26) | 1.87(3) a | 0+ | | |
| 172mHf | 2005.58(11) keV | 163(3) ns | (8-) | | |
| 173Hf | 72 | 101 | 172.94051(3) | 23.6(1) h | 1/2- | | |
| 174Hf | 72 | 102 | 173.940046(3) | 2.0(4)E+15 a | 0+ | 0.0016(1) | 0.001619-0.001621 |
| 174m1Hf | 1549.3 keV | 138(4) ns | (6+) | | |
| 174m2Hf | 1797.5(20) keV | 2.39(4) µs | (8-) | | |
| 174m3Hf | 1797.5 keV | 2.39(4) µs | (8-) | | |
| 174m4Hf | 3311.7 keV | 3.7(2) µs | (14+) | | |
| 175Hf | 72 | 103 | 174.941509(3) | 70(2) d | 5/2- | | |
| 176Hf | 72 | 104 | 175.9414086(24) | STABLE | 0+ | 0.0526(7) | 0.05206-0.05271 |
| 177Hf | 72 | 105 | 176.9432207(23) | STABLE | 7/2- | 0.1860(9) | 0.18593-0.18606 |
| 177m1Hf | 1315.4504(8) keV | 1.09(5) s | 23/2+ | | |
| 177m2Hf | 1342.38(20) keV | 55.9(12) µs | (19/2-) | | |
| 177m3Hf | 2740.02(15) keV | 51.4(5) min | 37/2- | | |
| 178Hf | 72 | 106 | 177.9436988(23) | STABLE | 0+ | 0.2728(7) | 0.27278-0.27297 |
| 178m1Hf | 1147.423(5) keV | 4.0(2) s | 8- | | |
| 178m2Hf | 2573.5(5) keV | 68(2) µs | (14-) | | |
| 178m3Hf | 2445.69(11) keV | 31(1) a | 16+ | | |
| 179Hf | 72 | 107 | 178.9458161(23) | STABLE | 9/2+ | 0.1362(2) | 0.13619-0.1363 |
| 179m1Hf | 375.0367(25) keV | 18.67(4) s | 1/2- | | |
| 179m2Hf | 1105.84(19) keV | 25.05(25) d | 25/2- | | |
| 180Hf | 72 | 108 | 179.9465500(23) | STABLE | 0+ | 0.3508(16) | 0.35076-0.351 |
| 180m1Hf | 1141.48(4) keV | 5.47(4) h | 8- | | |
| 180m2Hf | 1374.15(4) keV | 0.57(2) µs | (4-) | | |
| 180m3Hf | 2425.8(10) keV | 15(5) µs | (10+) | | |
| 180m4Hf | 2486.3(9) keV | 10(1) µs | 12+ | | |
| 180m5Hf | 2538.3(12) keV | >10 µs | (14+) | | |
| 180m6Hf | 3599.3(18) keV | 90(10) µs | (18-) | | |
| 181Hf | 72 | 109 | 180.9491012(23) | 42.39(6) d | 1/2- | | |
| 181m1Hf | 595(3) keV | 80(5) µs | (9/2+) | | |
| 181m2Hf | 1040(10) keV | ~100 µs | (17/2+) | | |
| 181m3Hf | 1738(10) keV | 1.5(5) ms | (27/2-) | | |
| 182Hf | 72 | 110 | 181.950554(7) | 8.90(9)E+6 a | 0+ | | |
| 182mHf | 1172.88(18) keV | 61.5(15) min | 8- | | |
| 183Hf | 72 | 111 | 182.95353(3) | 1.067(17) h | (3/2-) | | |
| 184Hf | 72 | 112 | 183.95545(4) | 4.12(5) h | 0+ | | |
| 184mHf | 1272.4(4) keV | 48(10) s | 8- | | |
| 185Hf | 72 | 113 | 184.95882(21)# | 3.5(6) min | 3/2-# | | |
| 186Hf | 72 | 114 | 185.96089(32)# | 2.6(12) min | 0+ | | |
| 187Hf | 72 | 115 | 186.96459(43)# | 30# s [>300 ns] | | | |
| 188Hf | 72 | 116 | 187.96685(54)# | 20# s [>300 ns] | 0+ | | |
参考文献
- 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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