Изотопи на празеодиумот

Природно настанатиот празеодимиум (59Pr) е составен од еден стабилен изотоп, 141Pr. Определени се триесет и осум радиоизотопи од кои најстабилни се 143Pr, со време на полураспад од 13,57 дена и 142Pr, со време на полураспад од 19,12 часа. Сите преостанати радиоактивни изотопи имаат време на полураспад помал од шест часа, а поголемиот дел од нив имаат време на полураспад помал од 33 секунди. Овој елемент има и 15 метасостојби со најстабилни 138mPr (t1/2 2,12 часа), 142mPr (t1/2 14,6 минути) и 134mPr (t1/2 11 минути).

Изотопите на празеодимиумот се движат по атомска тежина од 120,955 u (121Pr) до 158,955 u (159Pr). Примарниот режим на распаѓање пред стабилниот изотоп, 141Pr, е електронски зафат, а режимот после е бета-распад. Примарните распадни производи пред 141Pr се изотопи на елементот 58 (цериум), а примарните производи после се изотопи на елементот 60 (неодимиум).

## Список на изотопите

|-id=Празеодимиум-121
| 121Pr
| style="text-align:right" | 59
| style="text-align:right" | 62
| 120,95539(54)#
| 12(5)&nbsp;мс
| p
| 120Ce
| (3/2)(+#)
| 
|-id=Празеодимиум-124
| rowspan=2|124Pr
| rowspan=2 style="text-align:right" | 59
| rowspan=2 style="text-align:right" | 65
| rowspan=2|123,94294(43)#
| rowspan=2|1,2(2)&nbsp;с
| β+
| 124Ce
| rowspan=2|
| rowspan=2|
|-
| β+, p (?%)
| 123La
|-id=Празеодимиум-125
| 125Pr
| style="text-align:right" | 59
| style="text-align:right" | 66
| 124,93766(32)#
| 3,3(7)&nbsp;с
| β+
| 125Ce
| 3/2+#
| 
|-id=Празеодимиум-126
| rowspan=2|126Pr
| rowspan=2 style="text-align:right" | 59
| rowspan=2 style="text-align:right" | 67
| rowspan=2|125,93524(21)#
| rowspan=2|3,12(18)&nbsp;с
| β+
| 126Ce
| rowspan=2|(4, 5)
| rowspan=2|
|-
| β+, p (?%)
| 125La
|-id=Празеодимиум-127
| 127Pr
| style="text-align:right" | 59
| style="text-align:right" | 68
| 126,93071(21)#
| 4,2(3)&nbsp;с
| β+
| 127Ce
| 3/2+#
|
|-id=Празеодимиум-127m
| style="text-indent:1em" | 127mPr
| colspan="3" style="text-indent:2em" | 600(200)#&nbsp;keV
| 2#&nbsp;μс
|
|
| (11/2−)
|
|-id=Празеодимиум-128
| rowspan=2|128Pr
| rowspan=2 style="text-align:right" | 59
| rowspan=2 style="text-align:right" | 69
| rowspan=2|127,928791(32)
| rowspan=2|2,85(9)&nbsp;с
| β+
| 128Ce
| rowspan=2|(3+)
| rowspan=2|
|-
| β+, p (?%)
| 127La
|-id=Празеодимиум-129
| 129Pr
| style="text-align:right" | 59
| style="text-align:right" | 70
| 128,925095(32)
| 30(4)&nbsp;с
| β+
| 129Ce
| (3/2+)
|
|-id=Празеодимиум-129m
| style="text-indent:1em" | 129mPr
| colspan="3" style="text-indent:2em" | 382,57(24)&nbsp;keV
| 26(11)#&nbsp;μс
| IT
| 129Pr
| (11/2−)
|
|-id=Празеодимиум-130
| 130Pr
| style="text-align:right" | 59
| style="text-align:right" | 71
| 129,923590(69)
| 40,0(4)&nbsp;с
| β+
| 130Ce
| (6, 7)(+#)
|
|-id=Празеодимиум-130m
| style="text-indent:1em" | 130mPr
| colspan="3" style="text-indent:2em" | 100(100)#&nbsp;keV
| 10#&nbsp;с
|
|
| 2+#
|
|-id=Празеодимиум-131
| 131Pr
| style="text-align:right" | 59
| style="text-align:right" | 72
| 130,920235(50)
| 1,50(3)&nbsp;мин
| β+
| 131Ce
| (3/2+)
|
|-id=Празеодимиум-131m
| rowspan=2 style="text-indent:1em" | 131mPr
| rowspan=2 colspan="3" style="text-indent:2em" | 152,4(3)&nbsp;keV
| rowspan=2|5,73(20)&nbsp;с
| IT (96,4%)
| 131Pr
| rowspan=2|(11/2−)
| rowspan=2|
|-
| β+ (3,6%)
| 131Ce
|-id=Празеодимиум-132
| 132Pr
| style="text-align:right" | 59
| style="text-align:right" | 73
| 131,919240(31)
| 1,49(11)&nbsp;мин
| β+
| 132Ce
| (2+)
|
|-id=Празеодимиум-132m1
| style="text-indent:1em" | 132m1Pr
| colspan="3" style="text-indent:2em" | 30(30)#&nbsp;keV
| 1#&nbsp;с
| 
| 
| (5+)
|
|-id=Празеодимиум-132m2
| style="text-indent:1em" | 132m2Pr
| colspan="3" style="text-indent:2em" | 250(30)#&nbsp;keV
| 2,46(4)&nbsp;μс
| IT
| 132Pr
| (8+)
|
|-id=Празеодимиум-132m3
| style="text-indent:1em" | 132m3Pr
| colspan="3" style="text-indent:2em" | 300(30)#&nbsp;keV
| 486(70)&nbsp;нс
| IT
| 132Pr
| (8−)
|
|-id=Празеодимиум-133
| 133Pr
| style="text-align:right" | 59
| style="text-align:right" | 74
| 132,916331(13)
| 6,5(3)&nbsp;мин
| β+
| 133Ce
| 5/2+
|
|-id=Празеодимиум-133m
| style="text-indent:1em" | 133mPr
| colspan="3" style="text-indent:2em" | 192,12(14)&nbsp;keV
| 1,1(2)&nbsp;μс
| IT
| 133Pr
| (11/2−)
|
|-id=Празеодимиум-134
| 134Pr
| style="text-align:right" | 59
| style="text-align:right" | 75
| 133,915697(22)
| 17(2)&nbsp;мин
| β+
| 134Ce
| 2−
|
|-id=Празеодимиум-134m
| style="text-indent:1em" | 134mPr
| colspan="3" style="text-indent:2em" | 67,7(4)&nbsp;keV
| ~11&nbsp;мин
| β+
| 134Ce
| 6−
|
|-id=Празеодимиум-135
| 135Pr
| style="text-align:right" | 59
| style="text-align:right" | 76
| 134,913112(13)
| 24(1)&nbsp;мин
| β+
| 135Ce
| 3/2+
|
|-id=Празеодимиум-135m
| style="text-indent:1em" | 135mPr
| colspan="3" style="text-indent:2em" | 358,06(6)&nbsp;keV
| 105(10)&nbsp;μс
| IT
| 135Pr
| (11/2−)
|
|-id=Празеодимиум-136
| 136Pr
| style="text-align:right" | 59
| style="text-align:right" | 77
| 135,912677(12)
| 13,1(1)&nbsp;мин
| β+
| **<sup>136</sup>Ce**
| 2+
|
|-id=Празеодимиум-137
| 137Pr
| style="text-align:right" | 59
| style="text-align:right" | 78
| 136,9106792(87)
| 1,28(3)&nbsp;ч
| β+
| 137Ce
| 5/2+
|
|-id=Празеодимиум-137m
| style="text-indent:1em" | 137mPr
| colspan="3" style="text-indent:2em" | 561,22(23)&nbsp;keV
| 2,66(7)&nbsp;μс
| IT
| 137Pr
| 11/2−
|
|-id=Празеодимиум-138
| 138Pr
| style="text-align:right" | 59
| style="text-align:right" | 79
| 137,910757(11)
| 1,45(5)&nbsp;мин
| β+
| **<sup>138</sup>Ce**
| 1+
|
|-id=Празеодимиум-138m
| style="text-indent:1em" | 138mPr
| colspan="3" style="text-indent:2em" | 350(19)&nbsp;keV
| 2,12(4)&nbsp;ч
| β+
| **<sup>138</sup>Ce**
| 7−
|
|-id=Празеодимиум-139
| 139Pr
| style="text-align:right" | 59
| style="text-align:right" | 80
| 138,9089327(39)
| 4,41(4)&nbsp;ч
| β+
| 139Ce
| 5/2+
|
|-id=Празеодимиум-140
| rowspan=2|140Pr
| rowspan=2 style="text-align:right" | 59
| rowspan=2 style="text-align:right" | 81
| rowspan=2|139,9090856(66)
| rowspan=2|3,39(1)&nbsp;мин
| EC (51,3%)
| rowspan=2|**<sup>140</sup>Ce**
| rowspan=2|1+
| rowspan=2|
|-
| β+ (48,7%)
|-id=Празеодимиум-140m1
| style="text-indent:1em" | 140m1Pr
| colspan="3" style="text-indent:2em" | 127,8(3)&nbsp;keV
| 0,35(2)&nbsp;μс
| IT
| 140Pr
| 5+
|
|-id=Празеодимиум-140m2
| style="text-indent:1em" | 140m2Pr
| colspan="3" style="text-indent:2em" | 763,7(5)&nbsp;keV
| 3,05(20)&nbsp;μс
| IT
| 140Pr
| (7)−
|
|-id=Празеодимиум-141
| 141Pr
| style="text-align:right" | 59
| style="text-align:right" | 82
| 140,9076596(16)
| colspan=3 align=center|**Стабилен**
| 5/2+
| 1,0000
|-id=Празеодимиум-142
| rowspan=2|142Pr
| rowspan=2 style="text-align:right" | 59
| rowspan=2 style="text-align:right" | 83
| rowspan=2|141,9100516(16)
| rowspan=2|19,12(4)&nbsp;ч
| β− (99,98%)
| **<sup>142</sup>Nd**
| rowspan=2|2−
| rowspan=2|
|-
| EC (0,0164%)
| **<sup>142</sup>Ce**
|-id=Празеодимиум-142m
| style="text-indent:1em" | 142mPr
| colspan="3" style="text-indent:2em" | 3,694(3)&nbsp;keV
| 14,6(5)&nbsp;мин
| IT
| 142Pr
| 5−
|
|-id=Празеодимиум-143
| 143Pr
| style="text-align:right" | 59
| style="text-align:right" | 84
| 142,9108226(19)
| 13,57(2)&nbsp;д
| β−
| **<sup>143</sup>Nd**
| 7/2+
|
|-id=Празеодимиум-144
| 144Pr
| style="text-align:right" | 59
| style="text-align:right" | 85
| 143,9133107(29)
| 17,28(5)&nbsp;мин
| β−
| ***<sup>144</sup>Nd***
| 0−
|
|-id=Празеодимиум-144m
| rowspan=2 style="text-indent:1em" | 144mPr
| rowspan=2 colspan="3" style="text-indent:2em" | 59,03(3)&nbsp;keV
| rowspan=2|7,2(3)&nbsp;мин
| IT (~99,93%)
| 144Pr
| rowspan=2|3−
| rowspan=2|
|-
| β− (~0,07%)
| ***<sup>144</sup>Nd***
|-id=Празеодимиум-145
| 145Pr
| style="text-align:right" | 59
| style="text-align:right" | 86
| 144,9145180(77)
| 5,984(10)&nbsp;ч
| β−
| **<sup>145</sup>Nd**
| 7/2+
|
|-id=Празеодимиум-146
| 146Pr
| style="text-align:right" | 59
| style="text-align:right" | 87
| 145,917688(37)
| 24,09(10)&nbsp;мин
| β−
| **<sup>146</sup>Nd**
| (2−)
|
|-id=Празеодимиум-147
| 147Pr
| style="text-align:right" | 59
| style="text-align:right" | 88
| 146,919007(17)
| 13,39(4)&nbsp;мин
| β−
| 147Nd
| 3/2+
|
|-id=Празеодимиум-148
| 148Pr
| style="text-align:right" | 59
| style="text-align:right" | 89
| 147,922130(16)
| 2,29(2)&nbsp;мин
| β−
| **<sup>148</sup>Nd**
| 1−
|
|-id=Празеодимиум-148m
| rowspan=2 style="text-indent:1em" | 148mPr
| rowspan=2 colspan="3" style="text-indent:2em" | 76,80(20)&nbsp;keV
| rowspan=2|2,01(7)&nbsp;мин
| β− (64%)
| **<sup>148</sup>Nd**
| rowspan=2|(4)
| rowspan=2|
|-
| IT (36%)
| 148Pr
|-id=Празеодимиум-149
| 149Pr
| style="text-align:right" | 59
| style="text-align:right" | 90
| 148,923736(11)
| 2,26(7)&nbsp;мин
| β−
| 149Nd
| (5/2+)
|
|-id=Празеодимиум-150
| 150Pr
| style="text-align:right" | 59
| style="text-align:right" | 91
| 149,9266764(97)
| 6,19(16)&nbsp;с
| β−
| ***<sup>150</sup>Nd***
| 1−
|
|-id=Празеодимиум-151
| 151Pr
| style="text-align:right" | 59
| style="text-align:right" | 92
| 150,928309(13)
| 18,90(7)&nbsp;с
| β−
| 151Nd
| (3/2−)
|
|-id=Празеодимиум-151m
| style="text-indent:1em" | 151mPr
| colspan="3" style="text-indent:2em" | 35,10(10)&nbsp;keV
| 50(8)&nbsp;μс
| IT
| 151Pr
| (7/2+)
|
|-id=Празеодимиум-152
| 152Pr
| style="text-align:right" | 59
| style="text-align:right" | 93
| 151,931553(20)
| 3,57(11)&nbsp;с
| β−
| 152Nd
| 4+
|
|-id=Празеодимиум-152m
| style="text-indent:1em" | 152mPr
| colspan="3" style="text-indent:2em" | 115,1(3)&nbsp;keV
| 4,16(10)&nbsp;μс
| IT
| 152Pr
| (1+)
|
|-id=Празеодимиум-153
| 153Pr
| style="text-align:right" | 59
| style="text-align:right" | 94
| 152,933904(13)
| 4,28(11)&nbsp;с
| β−
| 153Nd
| 3/2−#
|
|-id=Празеодимиум-154
| 154Pr
| style="text-align:right" | 59
| style="text-align:right" | 95
| 153,93789(11)
| 2,30(9)&nbsp;с
| β−
| 154Nd
| (3+)
|
|-id=Празеодимиум-155
| 155Pr
| style="text-align:right" | 59
| style="text-align:right" | 96
| 154,940509(18)
| 1,47(3)&nbsp;с
| β−
| 155Nd
| 3/2−#
|
|-id=Празеодимиум-156
| 156Pr
| style="text-align:right" | 59
| style="text-align:right" | 97
| 155,9447669(11)
| 444(6)&nbsp;мс
| β−
| 156Nd
| 1+#
|
|-id=Празеодимиум-157
| 157Pr
| style="text-align:right" | 59
| style="text-align:right" | 98
| 156,9480031(34)
| 307(21)&nbsp;мс
| β−
| 157Nd
| 3/2−#
|
|-id=Празеодимиум-158
| 158Pr
| style="text-align:right" | 59
| style="text-align:right" | 99
| 157,95260(32)#
| 181(14)&nbsp;мс
| β−
| 158Nd
| 5−#
|
|-id=Празеодимиум-159
| 159Pr
| style="text-align:right" | 59
| style="text-align:right" | 100
| 158,95623(43)#
| 134(43)&nbsp;мс
| β−
| 159Nd
| 3/2−#
|
|-id=Празеодимиум-160
| 160Pr
| style="text-align:right" | 59
| style="text-align:right" | 101
| 159,96114(43)#
| 170(140)&nbsp;мс
| β−
| 160Nd
| 1+#
|
|-id=Празеодимиум-161
| 161Pr
| style="text-align:right" | 59
| style="text-align:right" | 102
| 160,96512(54)#
| 90#&nbsp;мс[>550&nbsp;нс]
| 
| 
| 3/2−#
|

## Наводи

* Isotope masses from:
**
* Half-life, spin, and isomer data selected from the following sources.
**
**
**

Празеодиум
Категорија:Празеодиум
Категорија:Изотопи на празеодиумот