{{위키데이터 속성 추적}}
'''[[프로메튬]]'''은 [[안정 동위 원소]]가 존재하지 않는다. 그러나 <sup>147</sup>Pm, <sup>149</sup>Pm, <sup>151</sup>Pm이 우라늄, 토륨의 자발 핵분열의 생성물로써 자연계에 극미량이 존재한다.

이들 극미량 동위 원소들 중 <sup>147</sup>Pm의 반감기가 2.623년으로 가장 길기 때문에 그나마 자연계에서 가장 많이 존재한다.

<sup>147</sup>Pm은 [[핵 폐기물]] 재처리를 통해서도 생산되며, 1g당 2와트의 에너지를 내기 때문에 과거에는 원자력 전지로 이용되었지만 현재는 이용도가 많이 줄었는데 반감기가 짧아서 10년 이상 장기간으로 오래 쓰기에는 부적절하기 때문이며, 생산량도 다른 [[원자력 전지]] 용도로 쓰이는 [[동위 원소]]에 비해 적기 때문이다.

그 외에도 인공적으로 <sup>126</sup>Pm부터 <sup>163</sup>Pm까지 합성되었으며 이들 중 <sup>145</sup>Pm의 반감기가 17.7년으로 가장 길다.

== 표 ==
{| class="wikitable" style="font-size:95%; white-space:nowrap"
! rowspan="2" | 핵자<br />수
! Z([[양성자|p]])
! N([[중성자|n]])
! &nbsp;<br />동위 원소 질량 (u)<br />&nbsp;
! rowspan="2" | 반감기
! rowspan="2" | 붕괴<br />방식<ref>http://www.nucleonica.net/unc.aspx</ref><ref group="n">약어:<br />ε: [[전자 포획]]<br />IT: [[이성질핵 전이]]</ref>
! rowspan="2" | 붕괴 생성<br />동위 원소<ref group="n">안정 동위 원소는 굵은 글씨로 표기, 우주의 나이보다 반감기가 긴 동위 원소는 굵은 흘림체로 표기</ref>
! rowspan="2" | 핵<br />스핀
|-
! colspan="3" | 들뜬 에너지
|-
| <sup>126</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 65
| 125.95752(54)#
| 0.5# s
|
|
|
|-
| <sup>127</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 66
| 126.95163(64)#
| 1# s
|
|
| 5/2+#
|-
| rowspan=2|<sup>128</sup>Pm
| rowspan=2 style="text-align:right" | 61
| rowspan=2 style="text-align:right" | 67
| rowspan=2|127.94842(43)#
| rowspan=2|1.0(3) s
| [[베타 붕괴|β<sup>+</sup>]]
| <sup>128</sup>Nd
| rowspan=2|6+#
|-
| [[양성자 방출|p]]
| <sup>127</sup>Nd
|-
| <sup>129</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 68
| 128.94316(43)#
| 3# s [>200 ns]
| β<sup>+</sup>
| <sup>129</sup>Nd
| 5/2+#
|-
| rowspan=2|<sup>130</sup>Pm
| rowspan=2 style="text-align:right" | 61
| rowspan=2 style="text-align:right" | 69
| rowspan=2|129.94045(32)#
| rowspan=2|2.6(2) s
| β<sup>+</sup>
| <sup>130</sup>Nd
| rowspan=2|(5+,6+,4+)
|-
| β<sup>+</sup>, p (드묾)
| <sup>129</sup>Pr
|-
| rowspan=2|<sup>131</sup>Pm
| rowspan=2 style="text-align:right" | 61
| rowspan=2 style="text-align:right" | 70
| rowspan=2|130.93587(21)#
| rowspan=2|6.3(8) s
| β<sup>+</sup>, p
| <sup>130</sup>Pr
| rowspan=2|5/2+#
|-
| β<sup>+</sup>
| <sup>131</sup>Nd
|-
| rowspan=2|<sup>132</sup>Pm
| rowspan=2 style="text-align:right" | 61
| rowspan=2 style="text-align:right" | 71
| rowspan=2|131.93375(21)#
| rowspan=2|6.2(6) s
| β<sup>+</sup>
| <sup>132</sup>Nd
| rowspan=2|(3+)
|-
| β<sup>+</sup>, p (5×10<sup>−5</sup>%)
| <sup>131</sup>Pr
|-
| <sup>133</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 72
| 132.92978(5)
| 15(3) s
| β<sup>+</sup>
| <sup>133</sup>Nd
| (3/2+)
|-
| rowspan=2 style="text-indent:1em" | <sup>133m</sup>Pm
| rowspan=2 colspan="3" style="text-indent:2em" | 130.4(10) keV
| rowspan=2|10# s
| β<sup>+</sup>
| <sup>133</sup>Nd
| rowspan=2|(11/2-)
|-
| [[이성질핵 전이|IT]]
| <sup>133</sup>Pm
|-
| <sup>134</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 73
| 133.92835(6)
| 22(1) s
| β<sup>+</sup>
| <sup>134</sup>Nd
| (5+)
|-
| style="text-indent:1em" | <sup>134m</sup>Pm
| colspan="3" style="text-indent:2em" | 0(100)# keV
| ~5 s
| IT
| <sup>134</sup>Pm
| (2+)
|-
| <sup>135</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 74
| 134.92488(6)
| 49(3) s
| β<sup>+</sup>
| <sup>135</sup>Nd
| (5/2+,3/2+)
|-
| style="text-indent:1em" | <sup>135m</sup>Pm
| colspan="3" style="text-indent:2em" | 50(100)# keV
| 40(3) s
| β<sup>+</sup>
| <sup>135</sup>Nd
| (11/2-)
|-
| <sup>136</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 75
| 135.92357(8)
| 107(6) s
| β<sup>+</sup>
| <sup>136</sup>Nd
| (5-)
|-
| style="text-indent:1em" | <sup>136m</sup>Pm
| colspan="3" style="text-indent:2em" | 130(120) keV
| 47(2) s
| β<sup>+</sup>
| <sup>136</sup>Nd
| (2+)
|-
| <sup>137</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 76
| 136.920479(14)
| 2# min
| β<sup>+</sup>
| <sup>137</sup>Nd
| 5/2+#
|-
| style="text-indent:1em" | <sup>137m</sup>Pm
| colspan="3" style="text-indent:2em" | 150(50) keV
| 2.4(1) min
| β<sup>+</sup>
| <sup>137</sup>Nd
| 11/2-
|-
| <sup>138</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 77
| 137.919548(30)
| 10(2) s
| β<sup>+</sup>
| <sup>138</sup>Nd
| 1+#
|-
| style="text-indent:1em" | <sup>138m</sup>Pm
| colspan="3" style="text-indent:2em" | 30(30) keV
| 3.24(5) min
| β<sup>+</sup>
| <sup>138</sup>Nd
| 5-#
|-
| <sup>139</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 78
| 138.916804(14)
| 4.15(5) min
| β<sup>+</sup>
| <sup>139</sup>Nd
| (5/2)+
|-
| rowspan=2 style="text-indent:1em" | <sup>139m</sup>Pm
| rowspan=2 colspan="3" style="text-indent:2em" | 188.7(3) keV
| rowspan=2|180(20) ms
| IT (99.83%)
| <sup>139</sup>Pm
| rowspan=2|(11/2)-
|-
| β<sup>+</sup> (0.17%)
| <sup>139</sup>Nd
|-
| <sup>140</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 79
| 139.91604(4)
| 9.2(2) s
| β<sup>+</sup>
| <sup>140</sup>Nd
| 1+
|-
| style="text-indent:1em" | <sup>140m</sup>Pm
| colspan="3" style="text-indent:2em" | 420(40) keV
| 5.95(5) min
| β<sup>+</sup>
| <sup>140</sup>Nd
| 8-
|-
| <sup>141</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 80
| 140.913555(15)
| 20.90(5) min
| β<sup>+</sup>
| <sup>141</sup>Nd
| 5/2+
|-
| style="text-indent:1em" | <sup>141m1</sup>Pm
| colspan="3" style="text-indent:2em" | 628.40(10) keV
| 630(20) ns
| 
|
| 11/2-
|-
| style="text-indent:1em" | <sup>141m2</sup>Pm
| colspan="3" style="text-indent:2em" | 2530.9(5) keV
| >2 µs
|
|
|
|-
| <sup>142</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 81
| 141.912874(27)
| 40.5(5) s
| β<sup>+</sup>
| '''<sup>142</sup>Nd'''
| 1+
|-
| style="text-indent:1em" | <sup>142m</sup>Pm
| colspan="3" style="text-indent:2em" | 883.17(16) keV
| 2.0(2) ms
| IT
| <sup>142</sup>Pm
| (8)-
|-
| <sup>143</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 82
| 142.910933(4)
| 265(7) d
| β<sup>+</sup>
| '''<sup>143</sup>Nd'''
| 5/2+
|-
| <sup>144</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 83
| 143.912591(3)
| 363(14) d
| β<sup>+</sup>
| '''''<sup>144</sup>Nd'''''
| 5-
|-
| style="text-indent:1em" | <sup>144m1</sup>Pm
| colspan="3" style="text-indent:2em" | 840.90(5) keV
| 780(200) ns
|
|
| (9)+
|-
| style="text-indent:1em" | <sup>144m2</sup>Pm
| colspan="3" style="text-indent:2em" | 8595.8(22) keV
| ~2.7 µs
|
|
| (27+)
|-
| rowspan=2|<sup>145</sup>Pm
| rowspan=2 style="text-align:right" | 61
| rowspan=2 style="text-align:right" | 84
| rowspan=2|144.912749(3)
| rowspan=2|17.7(4) a
| [[전자 포획|ε]]
| '''<sup>145</sup>Nd'''
| rowspan=2|5/2+
|-
| [[알파 붕괴|α]] (2.8×10<sup>−7</sup>%)
| '''<sup>141</sup>Pr'''
|-
| rowspan=2|<sup>146</sup>Pm
| rowspan=2 style="text-align:right" | 61
| rowspan=2 style="text-align:right" | 85
| rowspan=2|145.914696(5)
| rowspan=2|5.53(5) a
| ε (66%)
| '''<sup>146</sup>Nd'''
| rowspan=2|3-
|-
| β<sup>-</sup> (34%)
| <sup>146</sup>Sm
|-
| <sup>147</sup>Pm<ref group="n" name="FP">[[핵분열 생성물]]</ref>
| style="text-align:right" | 61
| style="text-align:right" | 86
| 146.9151385(26)
| 2.6234(2) a
| β<sup>-</sup>
| '''''<sup>147</sup>Sm'''''
| 7/2+
|-
| <sup>148</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 87
| 147.917475(7)
| 5.368(2) d
| β<sup>-</sup>
| '''''<sup>148</sup>Sm'''''
| 1-
|-
| rowspan=2 style="text-indent:1em" | <sup>148m</sup>Pm
| rowspan=2 colspan="3" style="text-indent:2em" | 137.9(3) keV
| rowspan=2|41.29(11) d
| β<sup>-</sup> (95%)
| '''''<sup>148</sup>Sm'''''
| rowspan=2|5-,6-
|-
| IT (5%)
| <sup>148</sup>Pm
|-
| <sup>149</sup>Pm<ref group="n" name="FP" />
| style="text-align:right" | 61
| style="text-align:right" | 88
| 148.918334(4)
| 53.08(5) h
| β<sup>-</sup>
| '''<sup>149</sup>Sm'''
| 7/2+
|-
| style="text-indent:1em" | <sup>149m</sup>Pm
| colspan="3" style="text-indent:2em" | 240.214(7) keV
| 35(3) µs
|
|
| 11/2-
|-
| <sup>150</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 89
| 149.920984(22)
| 2.68(2) h
| β<sup>-</sup>
| '''<sup>150</sup>Sm'''
| (1-)
|-
| <sup>151</sup>Pm<ref group="n" name="FP" />
| style="text-align:right" | 61
| style="text-align:right" | 90
| 150.921207(6)
| 28.40(4) h
| β<sup>-</sup>
| <sup>151</sup>Sm
| 5/2+
|-
| <sup>152</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 91
| 151.923497(28)
| 4.12(8) min
| β<sup>-</sup>
| '''<sup>152</sup>Sm'''
| 1+
|-
| style="text-indent:1em" | <sup>152m1</sup>Pm
| colspan="3" style="text-indent:2em" | 140(90) keV
| 7.52(8) min
|
|
| 4-
|-
| style="text-indent:1em" | <sup>152m2</sup>Pm
| colspan="3" style="text-indent:2em" | 250(150)# keV
| 13.8(2) min
|
|
| (8)
|-
| <sup>153</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 92
| 152.924117(12)
| 5.25(2) min
| β<sup>-</sup>
| <sup>153</sup>Sm
| 5/2-
|-
| <sup>154</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 93
| 153.92646(5)
| 1.73(10) min
| β<sup>-</sup>
| '''<sup>154</sup>Sm'''
| (0,1)
|-
| style="text-indent:1em" | <sup>154m</sup>Pm
| colspan="3" style="text-indent:2em" | 120(120) keV
| 2.68(7) min
| β<sup>-</sup>
| '''<sup>154</sup>Sm'''
| (3,4)
|-
| <sup>155</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 94
| 154.92810(3)
| 41.5(2) s
| β<sup>-</sup>
| <sup>155</sup>Sm
| (5/2-)
|-
| <sup>156</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 95
| 155.93106(4)
| 26.70(10) s
| β<sup>-</sup>
| <sup>156</sup>Sm
| 4-
|-
| <sup>157</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 96
| 156.93304(12)
| 10.56(10) s
| β<sup>-</sup>
| <sup>157</sup>Sm
| (5/2-)
|-
| <sup>158</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 97
| 157.93656(14)
| 4.8(5) s
| β<sup>-</sup>
| <sup>158</sup>Sm
|
|-
| <sup>159</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 98
| 158.93897(21)#
| 1.47(15) s
| β<sup>-</sup>
| <sup>159</sup>Sm
| 5/2-#
|-
| <sup>160</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 99
| 159.94299(32)#
| 2# s
| β<sup>-</sup>
| <sup>160</sup>Sm
|
|-
| <sup>161</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 100
| 160.94586(54)#
| 700# ms
| β<sup>-</sup>
| <sup>161</sup>Sm
| 5/2-#
|-
| <sup>162</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 101
| 161.95029(75)#
| 500# ms
| β<sup>-</sup>
| <sup>162</sup>Sm
|
|-
| <sup>163</sup>Pm
| style="text-align:right" | 61
| style="text-align:right" | 102
| 162.95368(86)#
| 200# ms
| β<sup>-</sup>
| <sup>163</sup>Sm
| 5/2-#
|}
{{각주|group="n"}}

== 각주 ==
{{각주}}

{{동위 원소 색인}}

[[분류:프로메튬|동위 원소]]
[[분류:프로메튬 동위 원소| ]]
[[분류:원소별 동위 원소 목록]]