Английская Википедия:Isotopes of terbium
Шаблон:Short description Шаблон:Infobox terbium isotopes Naturally occurring terbium (65Tb) is composed of one stable isotope, 159Tb. Thirty-seven radioisotopes have been characterized, with the most stable being 158Tb with a half-life of 180 years, 157Tb with a half-life of 71 years, and 160Tb with a half-life of 72.3 days. All of the remaining radioactive isotopes have half-lives that are less than 6.907 days, and the majority of these have half-lives that are less than 24 seconds. This element also has 27 meta states, with the most stable being 156m1Tb (t1/2 = 24.4 hours), 154m2Tb (t1/2 = 22.7 hours) and 154m1Tb (t1/2 = 9.4 hours).
The primary decay mode before the most abundant stable isotope, 159Tb, is electron capture, and the primary mode behind is beta decay. The primary decay products before 159Tb are element Gd (gadolinium) isotopes, and the primary products after 159Tb are element Dy (dysprosium) isotopes.
List of isotopes
Шаблон:Anchor Шаблон:Isotopes table |- | 135Tb | style="text-align:right" | 65 | style="text-align:right" | 70 | | 0.94(+33−22) ms | | | (7/2−) | | |- | 136Tb | style="text-align:right" | 65 | style="text-align:right" | 71 | 135.96138(64)# | 0.2# s | | | | | |- | 137Tb | style="text-align:right" | 65 | style="text-align:right" | 72 | 136.95598(64)# | 600# ms | | | 11/2−# | | |- | rowspan=2|138Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 73 | rowspan=2|137.95316(43)# | rowspan=2|800# ms [>200 ns] | β+ | 138Gd | rowspan=2| | rowspan=2| | rowspan=2| |- | p | 137Gd |- | 139Tb | style="text-align:right" | 65 | style="text-align:right" | 74 | 138.94829(32)# | 1.6(2) s | β+ | 139Gd | 11/2−# | | |- | rowspan=2|140Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 75 | rowspan=2|139.94581(86) | rowspan=2|2.4(2) s | β+ (99.74%) | 140Gd | rowspan=2|5 | rowspan=2| | rowspan=2| |- | β+, p (.26%) | 139Eu |- | 141Tb | style="text-align:right" | 65 | style="text-align:right" | 76 | 140.94145(11) | 3.5(2) s | β+ | 141Gd | (5/2−) | | |- | style="text-indent:1em" | 141mTb | colspan="3" style="text-indent:2em" | 0(200)# keV | 7.9(6) s | β+ | 141Gd | 11/2−# | | |- | rowspan=3|142Tb | rowspan=3 style="text-align:right" | 65 | rowspan=3 style="text-align:right" | 77 | rowspan=3|141.93874(32)# | rowspan=3|597(17) ms | β+ (96.8(4)%) | rowspan=2|142Gd | rowspan=3|1+ | rowspan=3| | rowspan=3| |- | EC (3.2(4)%) |- | β+, p | 141Eu |- | rowspan=2 style="text-indent:1em" | 142m1Tb | rowspan=2 colspan="3" style="text-indent:2em" | 280.2(10) keV | rowspan=2|303(17) ms | IT (99.5%) | 142Tb | rowspan=2|(5−) | rowspan=2| | rowspan=2| |- | β+ (.5%) | 142Gd |- | style="text-indent:1em" | 142m2Tb | colspan="3" style="text-indent:2em" | 621.4(11) keV | 15(4) µs | | | | | |- | 143Tb | style="text-align:right" | 65 | style="text-align:right" | 78 | 142.93512(6) | 12(1) s | β+ | 143Gd | (11/2−) | | |- | style="text-indent:1em" | 143mTb | colspan="3" style="text-indent:2em" | 0(100)# keV | <21 s | β+ | 143Gd | 5/2+# | | |- | rowspan=2|144Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 79 | rowspan=2|143.93305(3) | rowspan=2|~1 s | β+ | 144Gd | rowspan=2|1+ | rowspan=2| | rowspan=2| |- | β+, p (rare) | 143Eu |- | rowspan=3 style="text-indent:1em" | 144m1Tb | rowspan=3 colspan="3" style="text-indent:2em" | 396.9(5) keV | rowspan=3|4.25(15) s | IT (66%) | 144Tb | rowspan=3|(6−) | rowspan=3| | rowspan=3| |- | β+ (34%) | 144Gd |- | β+, p (<1%) | 143Eu |- | style="text-indent:1em" | 144m2Tb | colspan="3" style="text-indent:2em" | 476.2(5) keV | 2.8(3) µs | | | (8−) | | |- | style="text-indent:1em" | 144m3Tb | colspan="3" style="text-indent:2em" | 517.1(5) keV | 670(60) ns | | | (9+) | | |- | style="text-indent:1em" | 144m4Tb | colspan="3" style="text-indent:2em" | 544.5(6) keV | <300 ns | | | (10+) | | |- | 145Tb | style="text-align:right" | 65 | style="text-align:right" | 80 | 144.92927(6) | 20# min | β+ | 145Gd | (3/2+) | | |- | style="text-indent:1em" | 145mTb | colspan="3" style="text-indent:2em" | 0(100)# keV | 30.9(7) s | β+ | 145Gd | (11/2−) | | |- | 146Tb | style="text-align:right" | 65 | style="text-align:right" | 81 | 145.92725(5) | 8(4) s | β+ | 146Gd | 1+ | | |- | style="text-indent:1em" | 146m1Tb | colspan="3" style="text-indent:2em" | 150(100)# keV | 24.1(5) s | β+ | 146Gd | 5− | | |- | style="text-indent:1em" | 146m2Tb | colspan="3" style="text-indent:2em" | 930(100)# keV | 1.18(2) ms | | | (10+) | | |- | 147Tb | style="text-align:right" | 65 | style="text-align:right" | 82 | 146.924045(13) | 1.64(3) h | β+ | 147Gd | 1/2+# | | |- | style="text-indent:1em" | 147mTb | colspan="3" style="text-indent:2em" | 50.6(9) keV | 1.87(5) min | β+ | 147Gd | (11/2)− | | |- | 148Tb | style="text-align:right" | 65 | style="text-align:right" | 83 | 147.924272(15) | 60(1) min | β+ | 148Gd | 2− | | |- | style="text-indent:1em" | 148m1Tb | colspan="3" style="text-indent:2em" | 90.1(3) keV | 2.20(5) min | β+ | 148Gd | (9)+ | | |- | style="text-indent:1em" | 148m2Tb | colspan="3" style="text-indent:2em" | 8618.6(10) keV | 1.310(7) µs | | | (27+) | | |- | rowspan=2|149Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 84 | rowspan=2|148.923246(5) | rowspan=2|4.118(25) h | β+ (83.3%) | 149Gd | rowspan=2|1/2+ | rowspan=2| | rowspan=2| |- | α (16.7%) | 145Eu |- | rowspan=2 style="text-indent:1em" | 149mTb | rowspan=2 colspan="3" style="text-indent:2em" | 35.78(13) keV | rowspan=2|4.16(4) min | β+ (99.97%) | 149Gd | rowspan=2|11/2− | rowspan=2| | rowspan=2| |- | α (.022%) | 145Eu |- | rowspan=2|150Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 85 | rowspan=2|149.923660(8) | rowspan=2|3.48(16) h | β+ (99.95%) | 150Gd | rowspan=2|(2−) | rowspan=2| | rowspan=2| |- | α (.05%) | 146Eu |- | rowspan=2 style="text-indent:1em" | 150mTb | rowspan=2 colspan="3" style="text-indent:2em" | 457(29) keV | rowspan=2|5.8(2) min | β+ | 150Gd | rowspan=2|9+ | rowspan=2| | rowspan=2| |- | IT (rare) | 150Tb |- | rowspan=2|151Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 86 | rowspan=2|150.923103(5) | rowspan=2|17.609(1) h | β+ (99.99%) | 151Gd | rowspan=2|1/2(+) | rowspan=2| | rowspan=2| |- | α (.0095%) | 147Eu |- | rowspan=2 style="text-indent:1em" | 151mTb | rowspan=2 colspan="3" style="text-indent:2em" | 99.54(6) keV | rowspan=2|25(3) s | IT (93.8%) | 151Tb | rowspan=2|(11/2−) | rowspan=2| | rowspan=2| |- | β+ (6.2%) | 151Gd |- | rowspan=2|152Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 87 | rowspan=2|151.92407(4) | rowspan=2|17.8784(95) h[1] | β+ | 152Gd | rowspan=2|2− | rowspan=2| | rowspan=2| |- | α (7×10−7%) | 148Eu |- | style="text-indent:1em" | 152m1Tb | colspan="3" style="text-indent:2em" | 342.15(16) keV | 0.96 µs | | | 5− | | |- | rowspan=2 style="text-indent:1em" | 152m2Tb | rowspan=2 colspan="3" style="text-indent:2em" | 501.74(19) keV | rowspan=2|4.2(1) min | IT (78.8%) | 152Tb | rowspan=2|8+ | rowspan=2| | rowspan=2| |- | β+ (21.2%) | 152Gd |- | 153Tb | style="text-align:right" | 65 | style="text-align:right" | 88 | 152.923435(5) | 2.34(1) d | β+ | 153Gd | 5/2+ | | |- | style="text-indent:1em" | 153mTb | colspan="3" style="text-indent:2em" | 163.175(5) keV | 186(4) µs | | | 11/2− | | |- | rowspan=2|154Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 89 | rowspan=2|153.92468(5) | rowspan=2|21.5(4) h | β+ (99.9%) | 154Gd | rowspan=2|0(+#) | rowspan=2| | rowspan=2| |- | β− (.1%) | 154Dy |- | rowspan=3 style="text-indent:1em" | 154m1Tb | rowspan=3 colspan="3" style="text-indent:2em" | 12(7) keV | rowspan=3|9.4(4) h | β+ (78.2%) | 154Gd | rowspan=3|3− | rowspan=3| | rowspan=3| |- | IT (21.8%) | 154Tb |- | β− (.1%) | 154Dy |- | style="text-indent:1em" | 154m2Tb | colspan="3" style="text-indent:2em" | 200(150)# keV | 22.7(5) h | | | 7− | | |- | style="text-indent:1em" | 154m3Tb | colspan="3" style="text-indent:2em" | 0+Z keV | 513(42) ns | | | | | |- | 155Tb | style="text-align:right" | 65 | style="text-align:right" | 90 | 154.923505(13) | 5.32(6) d | EC | 155Gd | 3/2+ | | |- | rowspan=2|156Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 91 | rowspan=2|155.924747(5) | rowspan=2|5.35(10) d | β+ | 156Gd | rowspan=2|3− | rowspan=2| | rowspan=2| |- | β− (rare) | 156Dy |- | style="text-indent:1em" | 156m1Tb | colspan="3" style="text-indent:2em" | 54(3) keV | 24.4(10) h | IT | 156Tb | (7−) | | |- | style="text-indent:1em" | 156m2Tb | colspan="3" style="text-indent:2em" | 88.4(2) keV | 5.3(2) h | | | (0+) | | |- | 157Tb | style="text-align:right" | 65 | style="text-align:right" | 92 | 156.9240246(27) | 71(7) y | EC | 157Gd | 3/2+ | | |- | rowspan=2|158Tb | rowspan=2 style="text-align:right" | 65 | rowspan=2 style="text-align:right" | 93 | rowspan=2|157.9254131(28) | rowspan=2|180(11) y | β+ (83.4%) | 158Gd | rowspan=2|3− | rowspan=2| | rowspan=2| |- | β− (16.6%) | 158Dy |- | rowspan=3 style="text-indent:1em" | 158m1Tb | rowspan=3 colspan="3" style="text-indent:2em" | 110.3(12) keV | rowspan=3|10.70(17) s | IT (99.39%) | 158Tb | rowspan=3|0− | rowspan=3| | rowspan=3| |- | β− (.6%) | 158Dy |- | β+ (.01%) | 158Gd |- | style="text-indent:1em" | 158m2Tb | colspan="3" style="text-indent:2em" | 388.37(15) keV | 0.40(4) ms | | | 7− | | |- | 159Tb[n 1] | style="text-align:right" | 65 | style="text-align:right" | 94 | 158.9253468(27) | colspan=3 align=center|Stable | 3/2+ | 1.0000 | |- | 160Tb | style="text-align:right" | 65 | style="text-align:right" | 95 | 159.9271676(27) | 72.3(2) d | β− | 160Dy | 3− | | |- | 161Tb[n 1] | style="text-align:right" | 65 | style="text-align:right" | 96 | 160.9275699(28) | 6.906(19) d | β− | 161Dy | 3/2+ | | |- | 162Tb | style="text-align:right" | 65 | style="text-align:right" | 97 | 161.92949(4) | 7.60(15) min | β− | 162Dy | 1− | | |- | 163Tb | style="text-align:right" | 65 | style="text-align:right" | 98 | 162.930648(5) | 19.5(3) min | β− | 163Dy | 3/2+ | | |- | 164Tb | style="text-align:right" | 65 | style="text-align:right" | 99 | 163.93335(11) | 3.0(1) min | β− | 164Dy | (5+) | | |- | 165Tb | style="text-align:right" | 65 | style="text-align:right" | 100 | 164.93488(21)# | 2.11(10) min | β− | 165mDy | 3/2+# | | |- | 166Tb | style="text-align:right" | 65 | style="text-align:right" | 101 | 165.93799(11) | 25.6(22) s | β− | 166Dy | | | |- | 167Tb | style="text-align:right" | 65 | style="text-align:right" | 102 | 166.94005(43)# | 19.4(27) s | β− | 167Dy | 3/2+# | | |- | 168Tb | style="text-align:right" | 65 | style="text-align:right" | 103 | 167.94364(54)# | 8.2(13) s | β− | 168Dy | 4−# | | |- | 169Tb | style="text-align:right" | 65 | style="text-align:right" | 104 | 168.94622(64)# | 5.13(32) s | β− | 169Dy | 3/2+# | | |- | 170Tb | style="text-align:right" | 65 | style="text-align:right" | 105 | 169.95025(75)# | 960(78) ms | β− | 170Dy | | | |- | 171Tb | style="text-align:right" | 65 | style="text-align:right" | 106 | 170.95330(86)# | 1.23(10) s | β− | 171Dy | 3/2+# | | |- | 172Tb | style="text-align:right" | 65 | style="text-align:right" | 107 | | 760(190) ms | β− | 172Dy | 6+# | | Шаблон:Isotopes table/footer
References
- Isotope masses from:
- Isotopic compositions and standard atomic masses from:
- Half-life, spin, and isomer data selected from the following sources.
Шаблон:Navbox element isotopes
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