Изотопи на лантанот

мини| Стабилен Z/N графикон на La и Ba
Природниот лантан (57La) е составен од еден стабилен (139La) и еден радиоактивен (138La) изотоп, а најзастапен е стабилниот изотоп, 139La (99,91% природна застапеност). Има 39 радиоизотопи кои се карактеризирани, при што најстабилен е 138La, со време на полураспад од 1,03×1011 години; 137La, со време на полураспад од 60.000 години и 140La, со  време на полураспадод 1.6781 дена. Останатите радиоактивни изотопи имаат време на полураспад помало од еден ден, а поголемиот дел од нив имаат време на полураспад помало од 1 минута. Овој елемент има и 12 јадрени изомери, од кои најдолготрајниот е 132mLa, со време на полураспад од 24,3 минути. Полесните изотопи главно се распаѓаат до изотопи на бариумот, а тешките најчесто се распаѓаат до изотопи на цериумот. 138La може да се распадне и на двата.

Изотопите на лантан се движат по атомска тежина од 115,96&nbsp;u (116La) до 154,96 u (155La).

## Список на изотопите

|-id=Лантан-116
| rowspan=2|116La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 59
| rowspan=2|115,95701(35)#
| rowspan=2|50(22)&nbsp;мс
| p (~60%)
| 115Ba
| rowspan=2|
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (~40%)
| 116Ba
|-id=Лантан-116m
| style="text-indent:1em" | 116mLa
| colspan="3" style="text-indent:2em" | 182&nbsp;keV
| 
| IT
| 116La
| 
|
|
|-id=Лантан-117
| rowspan=2|117La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 60
| rowspan=2|116,95033(22)#
| rowspan=2|21,6(31)&nbsp;мс
| p (94%)
| 116Ba
| rowspan=2|(3/2+)
| rowspan=2|
| rowspan=2|
|-
| β+ (6%)
| 117Ba
|-id=Лантан-117m
| style="text-indent:1em" | 117mLa
| colspan="3" style="text-indent:2em" | 192&nbsp;keV
| 
| IT
| 117La
| (7/2−)
|
|
|-id=Лантан-120
| rowspan=2|120La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 63
| rowspan=2|119,93820(32)#
| rowspan=2|2,8(2)&nbsp;с
| β+
| 120Ba
| rowspan=2|4+
| rowspan=2|
| rowspan=2|
|-
| β+, p (?%)
| 119Cs
|-id=Лантан-121
| 121La
| style="text-align:right" | 57
| style="text-align:right" | 64
| 120,93324(32)#
| 5,3(2)&nbsp;с
| β+
| 121Ba
| 11/2−#
| 
| 
|-id=Лантан-122
| rowspan=2|122La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 65
| rowspan=2|121,93071(32)#
| rowspan=2|8,6(5)&nbsp;с
| β+
| 122Ba
| rowspan=2|2+
| rowspan=2|
| rowspan=2|
|-
| β+, p (?%)
| 121Cs
|-id=Лантан-123
| 123La
| style="text-align:right" | 57
| style="text-align:right" | 66
| 122,92630(21)#
| 17(3)&nbsp;с
| β+
| 123Ba
| 11/2−#
|
|
|-id=Лантан-124
| 124La
| style="text-align:right" | 57
| style="text-align:right" | 67
| 123,924574(61)
| 29,21(17)&nbsp;с
| β+
| 124Ba
| (7−, 8−)
|
|
|-id=Лантан-124m
| style="text-indent:1em" | 124mLa
| colspan="3" style="text-indent:2em" | 100(100)#&nbsp;keV
| 21(4)&nbsp;с
| β+
| 124Ba
| 2−#
|
|
|-id=Лантан-125
| 125La
| style="text-align:right" | 57
| style="text-align:right" | 68
| 124,920816(28)
| 64,8(12)&nbsp;с
| β+
| 125Ba
| 11/2−#
|
|
|-id=Лантан-125m
| style="text-indent:1em" | 125mLa
| colspan="3" style="text-indent:2em" | 107,00(10)&nbsp;keV
| 390(40)&nbsp;мс
| IT
| 125La
| (3/2+)
|
|
|-id=Лантан-126
| 126La
| style="text-align:right" | 57
| style="text-align:right" | 69
| 125,919513(97)
| 54(2)&nbsp;с
| β+
| 126Ba
| 5−#
|
|
|-id=Лантан-126m
| style="text-indent:1em" | 126mLa
| colspan="3" style="text-indent:2em" | 210(410)&nbsp;keV
| 20(20)&nbsp;с
| β+
| 126Ba
| 1−#
|
|
|-id=Лантан-127
| 127La
| style="text-align:right" | 57
| style="text-align:right" | 70
| 126,916375(28)
| 5,1(1)&nbsp;мин
| β+
| 127Ba
| (11/2−)
|
|
|-id=Лантан-127m
| style="text-indent:1em" | 127mLa
| colspan="3" style="text-indent:2em" | 14,2(4)&nbsp;keV
| 3,7(4)&nbsp;мин
| β+
| 127Ba
| (3/2+)
| 
| 
|-id=Лантан-128
| 128La
| style="text-align:right" | 57
| style="text-align:right" | 71
| 127,915592(58)
| 5,18(14)&nbsp;мин
| β+
| 128Ba
| (5+)
|
|
|-id=Лантан-128m
| style="text-indent:1em" | 128mLa
| colspan="3" style="text-indent:2em" | 100(100)#&nbsp;keV
| +
| 128Ba
| (1+, 2−)
|
|
|-id=Лантан-129
| 129La
| style="text-align:right" | 57
| style="text-align:right" | 72
| 128,912696(23)
| 11,6(2)&nbsp;мин
| β+
| 129Ba
| (3/2+)
|
|
|-id=Лантан-129m
| style="text-indent:1em" | 129mLa
| colspan="3" style="text-indent:2em" | 172,33(20)&nbsp;keV
| 560(50)&nbsp;мс
| IT
| 129La
| (11/2−)
|
|
|-id=Лантан-130
| 130La
| style="text-align:right" | 57
| style="text-align:right" | 73
| 129,912369(28)
| 8,7(1)&nbsp;мин
| β+
| ***<sup>130</sup>Ba***
| 3(+)
|
|
|-id=Лантан-130m
| style="text-indent:1em" | 130mLa
| colspan="3" style="text-indent:2em" | 214,0(5)&nbsp;keV
| 742(28)&nbsp;нс
| IT
| 130La
| (5+)
|
|
|-id=Лантан-131
| 131La
| style="text-align:right" | 57
| style="text-align:right" | 74
| 130,910070(30)
| 59(2)&nbsp;мин
| β+
| 131Ba
| 3/2+
|
|
|-id=Лантан-131m
| style="text-indent:1em" | 131mLa
| colspan="3" style="text-indent:2em" | 304,52(24)&nbsp;keV
| 170(10)&nbsp;μс
| IT
| 131La
| 11/2−
|
|
|-id=Лантан-132
| 132La
| style="text-align:right" | 57
| style="text-align:right" | 75
| 131,910119(39)
| 4,59(4)&nbsp;ч
| β+
| **<sup>132</sup>Ba**
| 2−
|
|
|-id=Лантан-132m
| rowspan=2 style="text-indent:1em" | 132mLa
| rowspan=2 colspan="3" style="text-indent:2em" | 188,20(11)&nbsp;keV
| rowspan=2|24,3(5)&nbsp;мин
| IT (76%)
| 132La
| rowspan=2|6−
| rowspan=2|
| rowspan=2|
|-
| β+ (24%)
| **<sup>132</sup>Ba**
|-id=Лантан-133
| 133La
| style="text-align:right" | 57
| style="text-align:right" | 76
| 132,908218(30)
| 3,912(8)&nbsp;ч
| β+
| 133Ba
| 5/2+
|
|
|-id=Лантан-134
| 134La
| style="text-align:right" | 57
| style="text-align:right" | 77
| 133,908514(21)
| 6,45(16)&nbsp;мин
| β+
| **<sup>134</sup>Ba**
| 1+
|
|
|-id=Лантан-134m
| style="text-indent:1em" | 134mLa
| colspan="3" style="text-indent:2em" | 440(100)#&nbsp;keV
| 29(4)&nbsp;μс
| IT
| 134La
| (6−)
|
|
|-id=Лантан-135
| 135La
| style="text-align:right" | 57
| style="text-align:right" | 78
| 134,906984(10)
| 18,91(2)&nbsp;ч
| β+
| **<sup>135</sup>Ba**
| 5/2+
|
|
|-id=Лантан-136
| 136La
| style="text-align:right" | 57
| style="text-align:right" | 79
| 135,907635(57)
| 9,87(3)&nbsp;мин
| β+
| **<sup>136</sup>Ba**
| 1+
|
|
|-id=Лантан-136m1
| style="text-indent:1em" | 136m1La
| colspan="3" style="text-indent:2em" | 259,5(3)&nbsp;keV
| 114(5)&nbsp;мс
| IT
| 136La
| (7−)
|
|
|-id=Лантан-136m2
| style="text-indent:1em" | 136m2La
| colspan="3" style="text-indent:2em" | 2520,6(4)&nbsp;keV
| 187(27)&nbsp;нс
| IT
| 136La
| (14+)
|
|
|-id=Лантан-137
| 137La
| style="text-align:right" | 57
| style="text-align:right" | 80
| 136,9064504(18)
| 6(2)×104&nbsp;г
| EC
| **<sup>137</sup>Ba**
| 7/2+
|
|
|-id=Лантан-137m
| style="text-indent:1em" | 137mLa
| colspan="3" style="text-indent:2em" | 1869,50(21)&nbsp;keV
| 342(25)&nbsp;нс
| IT
| 137La
| 19/2−
|
|
|-id=Лантан-138
| rowspan=2|138La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 81
| rowspan=2|137,90712404(45)
| rowspan=2|**1,03(1)×10<sup>11</sup>&nbsp;г**
| β+ (65,5%)
| **<sup>138</sup>Ba**
| rowspan=2|5+
| rowspan=2|8,881(71)×10−4
| rowspan=2|
|-
| β− (34,5%)
| **<sup>138</sup>Ce**
|-id=Лантан-138m1
| style="text-indent:1em" | 138m1La
| colspan="3" style="text-indent:2em" | 72,57(3)&nbsp;keV
| 116(5)&nbsp;нс
| IT
| ***<sup>138</sup>La***
| (3)+
|
|
|-id=Лантан-138m2
| style="text-indent:1em" | 138m2La
| colspan="3" style="text-indent:2em" | 738,80(20)&nbsp;keV
| 2,0(3)&nbsp;μс
| IT
| ***<sup>138</sup>La***
| 7−
|
|
|-id=Лантан-139
| 139La
| style="text-align:right" | 57
| style="text-align:right" | 82
| 138,90636293(65)
| colspan=3 align=center|**Стабилен**
| 7/2+
| 0,9991119(71)
|
|-id=Лантан-139m
| style="text-indent:1em" | 139mLa
| colspan="3" style="text-indent:2em" | 1800,4(4)&nbsp;keV
| 315(35)&nbsp;нс
| IT
| **<sup>139</sup>La**
| (17/2+)
|
|
|-id=Лантан-140
| 140La
| style="text-align:right" | 57
| style="text-align:right" | 83
| 139,90948729(65)
| 40,289(4)&nbsp;ч
| β−
| **<sup>140</sup>Ce**
| 3−
|
|
|-id=Лантан-141
| 141La
| style="text-align:right" | 57
| style="text-align:right" | 84
| 140,9109712(44)
| 3,92(3)&nbsp;ч
| β−
| 141Ce
| (7/2+)
|
|
|-id=Лантан-142
| 142La
| style="text-align:right" | 57
| style="text-align:right" | 85
| 141,9140908(67)
| 91,1(5)&nbsp;мин
| β−
| **<sup>142</sup>Ce**
| 2−
|
|
|-id=Лантан-142m
| style="text-indent:1em" | 142mLa
| colspan="3" style="text-indent:2em" | 145,82(8)&nbsp;keV
| 0,87(17)&nbsp;μс
| IT
| 142La
| (4)−
|
|
|-id=Лантан-143
| 143La
| style="text-align:right" | 57
| style="text-align:right" | 86
| 142,9160795(79)
| 14,2(1)&nbsp;мин
| β−
| 143Ce
| (7/2)+
|
|
|-id=Лантан-144
| 144La
| style="text-align:right" | 57
| style="text-align:right" | 87
| 143,919646(14)
| 44,0(7)&nbsp;с
| β−
| 144Ce
| (3−)
|
|
|-id=Лантан-145
| 145La
| style="text-align:right" | 57
| style="text-align:right" | 88
| 144,921808(13)
| 24,8(20)&nbsp;с
| β−
| 145Ce
| (5/2+)
|
|
|-id=Лантан-146
| 146La
| style="text-align:right" | 57
| style="text-align:right" | 89
| 145,9256880(18)
| 9,9(1)&nbsp;с
| β−
| 146Ce
| (5−)
| 
| 
|-id=Лантан-146m
| style="text-indent:1em" | 146mLa
| colspan="3" style="text-indent:2em" | 141,5(24)&nbsp;keV
| 6,08(22)&nbsp;с
| β−
| 146Ce
| (1−, 2−)
|
|
|-id=Лантан-147
| rowspan=2|147La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 90
| rowspan=2|146,928418(12)
| rowspan=2|4,026(20)&nbsp;с
| β− (99,96%)
| 147Ce
| rowspan=2|(5/2+)
| rowspan=2|
| rowspan=2|
|-
| β−, n (0,041%)
| 146Ce
|-id=Лантан-148
| rowspan=2|148La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 91
| rowspan=2|147,932679(21)
| rowspan=2|1,414(25)&nbsp;с
| β− (99,82%)
| 148Ce
| rowspan=2|(2−)
| rowspan=2|
| rowspan=2|
|-
| β−, n (0,18%)
| 147Ce
|-id=Лантан-149
| rowspan=2|149La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 92
| rowspan=2|148,93535(21)
| rowspan=2|1,071(22)&nbsp;с
| β− (98,57%)
| 149Ce
| rowspan=2|(3/2−)
| rowspan=2|
| rowspan=2|
|-
| β−, n (1,43%)
| 148Ce
|-id=Лантан-150
| rowspan=2|150La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 93
| rowspan=2|149,9395475(27)
| rowspan=2|504(15)&nbsp;мс
| β− (97,3%)
| 150Ce
| rowspan=2|(3+)
| rowspan=2|
| rowspan=2|
|-
| β−, n (2,7%)
| 149Ce
|-id=Лантан-151
| 151La
| style="text-align:right" | 57
| style="text-align:right" | 94
| 150,94277(47)
| 465(24)&nbsp;мс
| β−
| 151Ce
| 1/2+#
|
|
|-id=Лантан-152
| 152La
| style="text-align:right" | 57
| style="text-align:right" | 95
| 151,94709(32)#
| 287(16)&nbsp;мс
| β−
| 152Ce
| 2−#
|
|
|-id=Лантан-153
| 153La
| style="text-align:right" | 57
| style="text-align:right" | 96
| 152,95055(32)#
| 245(18)&nbsp;мс
| β−
| 153Ce
| 1/2+#
|
|
|-id=Лантан-154
| 154La
| style="text-align:right" | 57
| style="text-align:right" | 97
| 153,95542(32)#
| 161(15)&nbsp;мс
| β−
| 154Ce
| 2−#
|
|
|-id=Лантан-155
| 155La
| style="text-align:right" | 57
| style="text-align:right" | 98
| 154,95928(43)#
| 101(28)&nbsp;мс
| β−
| 155Ce
| 1/2+#
|
|
|-id=Лантан-156
| 156La
| style="text-align:right" | 57
| style="text-align:right" | 99
| 155,96452(43)#
| 84(78)&nbsp;мс
| β−
| 156Ce
| 4+#
|
|
|-id=Лантан-157
| 157La
| style="text-align:right" | 57
| style="text-align:right" | 100
| 156,96879(32)#
| 30#&nbsp;мс[>550&nbsp;нс]
| 
| 
| 1/2+#
|
|

## Наводи

Лантан
Категорија:Лантан
Категорија:Изотопи на лантанот