WikiDer > Isotope von Barium
Es Chemisches ElementBarium (Ba), mit a Atommasse ab 137.327(7) Sie, besitzt 6 Stall Isotope: 132ba, 134ba, 135ba, 136ba, 137Ba und 138Ba, der letzte von denen die meisten reichlich (ca. 71,7%). Die 33 Radioisotope sind instabil und haben eine relativ kurze halbes Leben (die meisten weniger als eins zweite).
Das kurzlebige Isotop von Barium ist 153Ba, mit einer Halbwertszeit von etwa 80 Millisekunden. Die langlebigste ist 130Ba, mit einer Halbwertszeit von 70 BillionJahr. Dieses Isotop ist ein radioaktives Urnuklid das in kleinen Mengen Boden verhindert. Es verfällt durch doppelter Elektroneneinfang zum stabilen Isotop Xenon-130.
Das Isotop Barium-114 ist das leichteste Isotop, das Clusterzerfall erfährt:[1]
Überblick
| Nuklid | Z (p) | N (nein) | Isotope Masse (u) | halbes Leben | Radioaktiver Zerfall | VP | Kernspin | Isotopenverhältnis (Molenbruch) | Natürliches Vorkommen (Molbruch) |
|---|---|---|---|---|---|---|---|---|---|
| Anregungsenergie | |||||||||
| 114ba | 56 | 58 | 113,95068(15) | 530(230) ms | β, p (99,59%) | 113xe | 0 | ||
| α (0,37%) | 110xe | ||||||||
| β (0,04%) | 114cs | ||||||||
| fortsetzen (0,0034%) | 102sn, 12C | ||||||||
| 115ba | 56 | 59 | 114,94737(64) | 0,45(5) s | β | 115cs | (5/2) | ||
| β, p | 114xe | ||||||||
| 116ba | 56 | 60 | 115,94138(43) | 1.3(2) s | β | 116cs | 0 | ||
| β, p | 115xe | ||||||||
| 117ba | 56 | 61 | 116,93850(32) | 1,75(7) s | β | 117cs | (3/2) | ||
| β, | 113ich | ||||||||
| β, p | 116xe | ||||||||
| 118ba | 56 | 62 | 117,93304(21) | 5.2(2) s | β | 118cs | 0 | ||
| β, p | 117xe | ||||||||
| 119ba | 56 | 63 | 118,93066(21) | 5,4(3) s | β | 119cs | (5/2) | ||
| β, p | 118xe | ||||||||
| 120ba | 56 | 64 | 119,92604(32) | 24(2) s | β | 120cs | 0 | ||
| 121ba | 56 | 65 | 120,92405(15) | 29,7(15) s | β (99,98%) | 121cs | 5/2 | ||
| β, p (0,02%) | 120xe | ||||||||
| 122ba | 56 | 66 | 121,91990(3) | 1,95(15) min | β | 122cs | 0 | ||
| 123ba | 56 | 67 | 122,918781(13) | 2,7(4) Minuten | β | 123cs | 5/2 | ||
| 124ba | 56 | 68 | 123,915094(13) | 11,0(5) min | β | 124cs | 0 | ||
| 125ba | 56 | 69 | 124,914473(12) | 3,5(4) Minuten | β | 125cs | 1/2 | ||
| 126ba | 56 | 70 | 125,911250(13) | 100 (2) Minuten | β | 126cs | 0 | ||
| 127ba | 56 | 71 | 126,911094(12) | 12,7(4) min | β | 127cs | 1/2 | ||
| 127mba | 80,33(12) keV | 1,9(2) s | ES | 127ba | 7/2− | ||||
| 128ba | 56 | 72 | 127,908318(11) | 2,43(5) d | β | 128cs | 0 | ||
| 129ba | 56 | 73 | 128,908679(12) | 2,23(11) Stunden | β | 129cs | 1/2 | ||
| 129mba | 8,42(6) keV | 2.16(2) Stunden | β | 129cs | 7/2 | ||||
| ES | 129ba | ||||||||
| 130ba | 56 | 74 | 129,9063208(30) | 7 × 1013 Jahr | 2EV | 130xe | 0 | 0,00106(1) | |
| 130mba | 2475,12(18) keV | 9,54(14) ms | ES | 130ba | 8− | ||||
| 131ba | 56 | 75 | 130,906941(3) | 11.50(6) Tage | β | 131cs | 1/2 | ||
| 131mba | 187,14(12) keV | 14,6 (2) Minuten | ES | 131ba | 9/2− | ||||
| 132ba | 56 | 76 | 131,9050613(11) | stabil | 0 | 0,00101(1) | |||
| 133ba | 56 | 77 | 132,9060075(11) | 10,51(5) Jahre | EV | 133cs | 1/2 | ||
| 133mba | 288.247(9) keV | 38,9(1) Stunden | IT (99,99%) | 133ba | 11/2− | ||||
| EV (0,0096%) | 133cs | ||||||||
| 134ba | 56 | 78 | 133,9045084(4) | stabil | 0 | 0,02417(18) | |||
| 135ba | 56 | 79 | 134,9056886(4) | stabil | 3/2 | 0,06592(12) | |||
| 135mba | 268.22(2) keV | 28,7(2) Stunden | ES | 135ba | 11/2− | ||||
| 136ba | 56 | 80 | 135,9045759(4) | stabil | 0 | 0,07854(24) | |||
| 136mba | 200.466(18) keV | 308,4 (19) ms | ES | 136ba | 7− | ||||
| 137ba | 56 | 81 | 136,9058274(5) | stabil | 3/2 | 0,11232(24) | |||
| 137m1ba | 661.659(3) keV | 2.552(1) Minuten | ES | 137ba | 11/2− | ||||
| 137m2ba | 2349.1(4) keV | 0,59(10) µs | (17/2−) | ||||||
| 138ba | 56 | 82 | 137,9052472(5) | stabil | 0 | 0,71698(42) | |||
| 138mba | 2090,54(6) keV | 800(100) ns | 6 | ||||||
| 139ba | 56 | 83 | 138,9088413(5) | 83,06(28) Minuten | β− | 139La | 7/2− | ||
| 140ba | 56 | 84 | 139,910605(9) | 12.752(3) Tage | β− | 140La | 0 | ||
| 141ba | 56 | 85 | 140,914411(9) | 18,27(7) Minuten | β− | 141La | 3/2− | ||
| 142ba | 56 | 86 | 141,916453(7) | 10,6 (2) Minuten | β− | 142La | 0 | ||
| 143ba | 56 | 87 | 142,920627(14) | 14,5(3) s | β− | 143La | 5/2− | ||
| 144ba | 56 | 88 | 143,922953(14) | 11,5(2) s | β− (96,4%) | 144La | 0 | ||
| β (3,59%) | 144cs | ||||||||
| 145ba | 56 | 89 | 144,92763(8) | 4.31(16) s | β− | 145La | 5/2− | ||
| 146ba | 56 | 90 | 145,93022(8) | 2.22(7) s | β− (99,98%) | 146La | 0 | ||
| β−, nein (0,02%) | 145La | ||||||||
| 147ba | 56 | 91 | 146,93495(22) | 0,893(1) Sek. | β− (99,94%) | 147La | (3/2) | ||
| β−, n (0,06%) | 146La | ||||||||
| 148ba | 56 | 92 | 147,93772(9) | 0,612(17) s | β− (99,6%) | 148La | 0 | ||
| β−, n (0,4%) | 147La | ||||||||
| 149ba | 56 | 93 | 148,94258(21) | 344(7) ms | β− (99,57%) | 149La | 3/2− | ||
| β−, n (0,43 %) | 148La | ||||||||
| 150ba | 56 | 94 | 149,94568(43) | 300ms | β− | 150La | 0 | ||
| β−, n (selten) | 149La | ||||||||
| 151ba | 56 | 95 | 150,95081(43) | 200ms | β− | 151La | 3/2− | ||
| 152ba | 56 | 96 | 151,95427(54) | 100ms | β− | 152La | 0 | ||
| 153ba | 56 | 97 | 152,95961(86) | 80ms | β− | 153La | 5/2− | ||
Übersicht der Isotope pro Element
Quellen, Anmerkungen und/oder Verweise
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| Isotope von Barium (Ba) |
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114ba ·115ba ·116ba ·117ba ·118ba ·119ba ·120ba ·121ba ·122ba ·123ba ·124ba ·125ba ·126ba ·127ba ·128ba ·129ba ·130ba ·131ba ·132ba ·133ba ·134ba ·135ba ·136ba ·137ba ·138ba ·139ba ·140ba ·141ba ·142ba ·143ba ·144ba ·145ba ·146ba ·147ba ·148ba ·149ba ·150ba ·151ba ·152ba ·153ba |