レニウム(Re)の同位体のうち天然に存在するものは、天然存在比が37.4%の安定同位体である185Reと、62.6%の安定ではないが非常に長い半減期を持つ187Reである。他に26個の不安定な同位体が知られている。
標準原子量は186.207(1) 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 |
| 160Re | 75 | 85 | 159.98212(43)# | 860(120) µs [0.82(+15-9) ms] | (2-) | | |
| 161Re | 75 | 86 | 160.97759(22) | 0.37(4) ms | 1/2+ | | |
| 161mRe | 123.8(13) keV | 15.6(9) ms | 11/2- | | |
| 162Re | 75 | 87 | 161.97600(22)# | 107(13) ms | (2-) | | |
| 162mRe | 173(10) keV | 77(9) ms | (9+) | | |
| 163Re | 75 | 88 | 162.972081(21) | 390(70) ms | (1/2+) | | |
| 163mRe | 115(4) keV | 214(5) ms | (11/2-) | | |
| 164Re | 75 | 89 | 163.97032(17)# | 0.53(23) s | high | | |
| 164mRe | 120(120)# keV | 530(230) ms | (2#)- | | |
| 165Re | 75 | 90 | 164.967089(30) | 1# s | 1/2+# | | |
| 165mRe | 47(26) keV | 2.1(3) s | 11/2-# | | |
| 166Re | 75 | 91 | 165.96581(9)# | 2# s | 2-# | | |
| 167Re | 75 | 92 | 166.96260(6)# | 3.4(4) s | 9/2-# | | |
| 167mRe | 130(40)# keV | 5.9(3) s | 1/2+# | | |
| 168Re | 75 | 93 | 167.96157(3) | 4.4(1) s | (5+,6+,7+) | | |
| 168mRe | non-exist | 6.6(15) s | | | |
| 169Re | 75 | 94 | 168.95879(3) | 8.1(5) s | 9/2-# | | |
| 169mRe | 145(29) keV | 15.1(15) s | 1/2+# | | |
| 170Re | 75 | 95 | 169.958220(28) | 9.2(2) s | (5+) | | |
| 171Re | 75 | 96 | 170.95572(3) | 15.2(4) s | (9/2-) | | |
| 172Re | 75 | 97 | 171.95542(6) | 15(3) s | (5) | | |
| 172mRe | 0(100)# keV | 55(5) s | (2) | | |
| 173Re | 75 | 98 | 172.95324(3) | 1.98(26) min | (5/2-) | | |
| 174Re | 75 | 99 | 173.95312(3) | 2.40(4) min | | | |
| 175Re | 75 | 100 | 174.95138(3) | 5.89(5) min | (5/2-) | | |
| 176Re | 75 | 101 | 175.95162(3) | 5.3(3) min | 3+ | | |
| 177Re | 75 | 102 | 176.95033(3) | 14(1) min | 5/2- | | |
| 177mRe | 84.71(10) keV | 50(10) µs | 5/2+ | | |
| 178Re | 75 | 103 | 177.95099(3) | 13.2(2) min | (3+) | | |
| 179Re | 75 | 104 | 178.949988(26) | 19.5(1) min | (5/2)+ | | |
| 179m1Re | 65.39(9) keV | 95(25) µs | (5/2-) | | |
| 179m2Re | 1684.59(14)+Y keV | >0.4 µs | (23/2+) | | |
| 180Re | 75 | 105 | 179.950789(23) | 2.44(6) min | (1)- | | |
| 181Re | 75 | 106 | 180.950068(14) | 19.9(7) h | 5/2+ | | |
| 182Re | 75 | 107 | 181.95121(11) | 64.0(5) h | 7+ | | |
| 182m1Re | 60(100) keV | 12.7(2) h | 2+ | | |
| 182m2Re | 235.736(10)+X keV | 585(21) ns | 2- | | |
| 182m3Re | 461.3(1)+X keV | 0.78(9) µs | (4-) | | |
| 183Re | 75 | 108 | 182.950820(9) | 70.0(14) d | 5/2+ | | |
| 183mRe | 1907.6(3) keV | 1.04(4) ms | (25/2+) | | |
| 184Re | 75 | 109 | 183.952521(5) | 38.0(5) d | 3(-) | | |
| 184mRe | 188.01(4) keV | 169(8) d | 8(+) | | |
| 185Re | 75 | 110 | 184.9529550(13) | STABLE | 5/2+ | 0.3740(2) | |
| 185mRe | 2124(2) keV | 123(23) ns | (21/2) | | |
| 186Re | 75 | 111 | 185.9549861(13) | 3.7186(5) d | 1- | | |
| 186mRe | 149(7) keV | 2.0(5)E+5 a | (8+) | | |
| 187Re | 75 | 112 | 186.9557531(15) | 4.12(2)E+10 a | 5/2+ | 0.6260(2) | |
| 188Re | 75 | 113 | 187.9581144(15) | 17.0040(22) h | 1- | | |
| 188mRe | 172.069(9) keV | 18.59(4) min | (6)- | | |
| 189Re | 75 | 114 | 188.959229(9) | 24.3(4) h | 5/2+ | | |
| 190Re | 75 | 115 | 189.96182(16) | 3.1(3) min | (2)- | | |
| 190mRe | 210(50) keV | 3.2(2) h | (6-) | | |
| 191Re | 75 | 116 | 190.963125(11) | 9.8(5) min | (3/2+,1/2+) | | |
| 192Re | 75 | 117 | 191.96596(21)# | 16(1) s | | | |
| 193Re | 75 | 118 | 192.96747(21)# | 30# s [>300 ns] | 5/2+# | | |
| 194Re | 75 | 119 | 193.97042(32)# | 2# s [>300 ns] | | | |
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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