{{위키데이터 속성 추적}}
자연계에 존재하는 [[디스프로슘]]의 [[안정 동위 원소]] 7종으로 <sup>156</sup>Dy, <sup>158</sup>Dy, <sup>160</sup>Dy, <sup>161</sup>Dy, <sup>162</sup>Dy, <sup>163</sup>Dy, <sup>164</sup>Dy이 존재한다.

이들 중 <sup>156</sup>Dy은 반감기가 존재할 것으로 예상되지만, 예상과는 다르게 붕괴하지 않을 수도 있다. <sup>164</sup>Dy은 이론적으로 [[자발 핵분열]]을 할 것으로 예상되는 [[안정 동위 원소]]들 중 가장 무거운 [[동위 원소]]이며, 예상과는 다르게 붕괴하지 않을 수도 있다.

<sup>154</sup>Dy은 [[반감기]]가 3 x 10<sup>6</sup> 년으로 [[태양계]] 초창기에는 존재했었지만 반감기가 짧아 이른 시기에 붕괴하여 현재는 존재하지 않는다.

인공적으로 합성된 디스프로슘의 동위 원소들 중 <sup>159</sup>Dy은 반감기가 144.4일, <sup>166</sup>Dy의 반감기는 81.6일이다.

== 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
! rowspan="2" | 자연계에 존재하는<br />동위 원소<br />범위<br />(몰 분율)
! rowspan="2" | 자연계에 존재하는<br />최대 범위<br />(몰 분율)
|-
! colspan="3" | 들뜬 에너지
|-
| <sup>138</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 72
| 137.96249(64)#
| 200# ms
|
|
| 0+
|
|
|-
| <sup>139</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 73
| 138.95954(54)#
| 600(200) ms
|
|
| 7/2+#
|
|
|-
| <sup>140</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 74
| 139.95401(54)#
| 700# ms
| [[베타 붕괴|β<sup>+</sup>]]
| <sup>140</sup>Tb
| 0+
|
|
|-
| style="text-indent:1em" | <sup>140m</sup>Dy
| colspan="3" style="text-indent:2em" | 2166.1(5) keV
| 7.0(5) µs
|
|
| (8-)
|
|
|-
| rowspan=2|<sup>141</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 75
| rowspan=2|140.95135(32)#
| rowspan=2|0.9(2) s
| β<sup>+</sup>
| <sup>141</sup>Tb
| rowspan=2|(9/2-)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, [[양성자 방출|p]] (드묾)
| <sup>140</sup>Gd
|-
| rowspan=2|<sup>142</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 76
| rowspan=2|141.94637(39)#
| rowspan=2|2.3(3) s
| β<sup>+</sup> (99.94%)
| <sup>142</sup>Tb
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (0.06%)
| <sup>141</sup>Gd
|-
| rowspan=2|<sup>143</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 77
| rowspan=2|142.94383(21)#
| rowspan=2|5.6(10) s
| β<sup>+</sup>
| <sup>143</sup>Tb
| rowspan=2|(1/2+)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (드묾)
| <sup>142</sup>Gd
|-
| style="text-indent:1em" | <sup>143m</sup>Dy
| colspan="3" style="text-indent:2em" | 310.7(6) keV
| 3.0(3) s
|
|
| (11/2-)
|
|
|-
| rowspan=2|<sup>144</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 78
| rowspan=2|143.93925(3)
| rowspan=2|9.1(4) s
| β<sup>+</sup>
| <sup>144</sup>Tb
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (드묾)
| <sup>143</sup>Gd
|-
| rowspan=2|<sup>145</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 79
| rowspan=2|144.93743(5)
| rowspan=2|9.5(10) s
| β<sup>+</sup>
| <sup>145</sup>Tb
| rowspan=2|(1/2+)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (드묾)
| <sup>144</sup>Gd
|-
| style="text-indent:1em" | <sup>145m</sup>Dy
| colspan="3" style="text-indent:2em" | 118.2(2) keV
| 14.1(7) s
| β<sup>+</sup>
| <sup>145</sup>Tb
| (11/2-)
|
|
|-
| <sup>146</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 80
| 145.932845(29)
| 33.2(7) s
| β<sup>+</sup>
| <sup>146</sup>Tb
| 0+
|
|
|-
| style="text-indent:1em" | <sup>146m</sup>Dy
| colspan="3" style="text-indent:2em" | 2935.7(6) keV
| 150(20) ms
| [[이성질핵 전이|IT]]
| <sup>146</sup>Dy
| (10+)#
|
|
|-
| rowspan=2|<sup>147</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 81
| rowspan=2|146.931092(21)
| rowspan=2|40(10) s
| β<sup>+</sup> (99.95%)
| <sup>147</sup>Tb
| rowspan=2|1/2+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>, p (0.05%)
| <sup>146</sup>Tb
|-
| rowspan=2 style="text-indent:1em" | <sup>147m1</sup>Dy
| rowspan=2 colspan="3" style="text-indent:2em" | 750.5(4) keV
| rowspan=2|55(1) s
| β<sup>+</sup> (65%)
| <sup>147</sup>Tb
| rowspan=2|11/2-
| rowspan=2|
| rowspan=2|
|-
| IT (35%)
| <sup>147</sup>Dy
|-
| style="text-indent:1em" | <sup>147m2</sup>Dy
| colspan="3" style="text-indent:2em" | 3407.2(8) keV
| 0.40(1) µs
|
|
| (27/2-)
|
|
|-
| <sup>148</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 82
| 147.927150(11)
| 3.3(2) min
| β<sup>+</sup>
| <sup>148</sup>Tb
| 0+
|
|
|-
| <sup>149</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 83
| 148.927305(9)
| 4.20(14) min
| β<sup>+</sup>
| <sup>149</sup>Tb
| 7/2(-)
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>149m</sup>Dy
| rowspan=2 colspan="3" style="text-indent:2em" | 2661.1(4) keV
| rowspan=2|490(15) ms
| IT (99.3%)
| <sup>149</sup>Dy
| rowspan=2|(27/2-)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (0.7%)
| <sup>149</sup>Tb
|-
| rowspan=2|<sup>150</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 84
| rowspan=2|149.925585(5)
| rowspan=2|7.17(5) min
| β<sup>+</sup> (64%)
| <sup>150</sup>Tb
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| [[알파 붕괴|α]] (36%)
| <sup>146</sup>Gd
|-
| rowspan=2|<sup>151</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 85
| rowspan=2|150.926185(4)
| rowspan=2|17.9(3) min
| β<sup>+</sup> (94.4%)
| <sup>151</sup>Tb
| rowspan=2|7/2(-)
| rowspan=2|
| rowspan=2|
|-
| α (5.6%)
| <sup>147</sup>Gd
|-
| rowspan=2|<sup>152</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 86
| rowspan=2|151.924718(6)
| rowspan=2|2.38(2) h
| [[전자 포획|ε]] (99.9%)
| <sup>152</sup>Tb
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| α (0.1%)
| <sup>148</sup>Gd
|-
| rowspan=2|<sup>153</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 87
| rowspan=2|152.925765(5)
| rowspan=2|6.4(1) h
| β<sup>+</sup> (99.99%)
| <sup>153</sup>Tb
| rowspan=2|7/2(-)
| rowspan=2|
| rowspan=2|
|-
| α (0.00939%)
| <sup>149</sup>Gd
|-
| rowspan=2|<sup>154</sup>Dy
| rowspan=2 style="text-align:right" | 66
| rowspan=2 style="text-align:right" | 88
| rowspan=2|153.924424(8)
| rowspan=2|3.0(15)×10<sup>6</sup> a
| α
| <sup>150</sup>Gd
| rowspan=2|0+
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup>β<sup>+</sup> (드묾)
| '''<sup>154</sup>Gd'''
|-
| <sup>155</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 89
| 154.925754(13)
| 9.9(2) h
| β<sup>+</sup>
| <sup>155</sup>Tb
| 3/2-
|
|
|-
| style="text-indent:1em" | <sup>155m</sup>Dy
| colspan="3" style="text-indent:2em" | 234.33(3) keV
| 6(1) µs
|
|
| 11/2-
|
|
|-
| <sup>156</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 90
| 155.924283(7)
| colspan=3 align=center|'''관찰 안정'''<ref group="n">α 붕괴를 통해 '''''<sup>152</sup>Gd'''''으로 붕괴하거나, 또는 β<sup>+</sup>β<sup>+</sup> 붕괴를 통해 '''<sup>156</sup>Gd'''으로 붕괴할 수 있으며, 반감기는 7.8 x 10<sup>20</sup> 년을 초과할 것으로 예상된다.</ref>
| 0+
| 5.6(3)×10<sup>−4</sup>
|
|-
| <sup>157</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 91
| 156.925466(7)
| 8.14(4) h
| β<sup>+</sup>
| <sup>157</sup>Tb
| 3/2-
|
|
|-
| style="text-indent:1em" | <sup>157m1</sup>Dy
| colspan="3" style="text-indent:2em" | 161.99(3) keV
| 1.3(2) µs
|
|
| 9/2+
|
|
|-
| style="text-indent:1em" | <sup>157m2</sup>Dy
| colspan="3" style="text-indent:2em" | 199.38(7) keV
| 21.6(16) ms
| IT
| <sup>157</sup>Dy
| 11/2-
|
|
|-
| <sup>158</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 92
| 157.924409(4)
| colspan=3 align=center|'''안정'''<ref group="n">α 붕괴를 통해 '''<sup>154</sup>Gd'''으로 붕괴하거나, 또는 β<sup>+</sup>β<sup>+</sup> 붕괴를 통해 '''<sup>158</sup>Gd'''으로 붕괴할 수 있다.</ref>
| 0+
| 9.5(3)×10<sup>−4</sup>
|
|-
| <sup>159</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 93
| 158.9257392(29)
| 144.4(2) d
| ε
| '''<sup>159</sup>Tb'''
| 3/2-
|
|
|-
| style="text-indent:1em" | <sup>159m</sup>Dy
| colspan="3" style="text-indent:2em" | 352.77(14) keV
| 122(3) µs
|
|
| 11/2-
|
|
|-
| <sup>160</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 94
| 159.9251975(27)
| colspan=3 align=center|'''안정'''<ref group="n">α 붕괴를 통해 '''<sup>156</sup>Gd'''으로 붕괴할 수 있다.</ref>
| 0+
| 0.02329(18)
|
|-
| <sup>161</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 95
| 160.9269334(27)
| colspan=3 align=center|'''안정'''<ref group="n">α 붕괴를 통해 '''<sup>157</sup>Gd'''으로 붕괴할 수 있다.</ref>
| 5/2+
| 0.18889(42)
|
|-
| <sup>162</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 96
| 161.9267984(27)
| colspan=3 align=center|'''안정'''<ref group="n">α 붕괴를 통해 '''<sup>158</sup>Gd'''으로 붕괴할 수 있다.</ref>
| 0+
| 0.25475(36)
|
|-
| <sup>163</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 97
| 162.9287312(27)
| colspan=3 align=center|'''안정'''<ref group="n" name="SF">이론상으로 [[자발 핵분열]]을 할 수 있다.</ref>
| 5/2-
| 0.24896(42)
|
|-
| <sup>164</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 98
| 163.9291748(27)
| colspan=3 align=center|'''안정'''<ref group="n" name="SF" />
| 0+
| 0.28260(54)
|
|-
| <sup>165</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 99
| 164.9317033(27)
| 2.334(1) h
| β<sup>-</sup>
| '''<sup>165</sup>Ho'''
| 7/2+
|
|
|-
| rowspan=2 style="text-indent:1em" | <sup>165m</sup>Dy
| rowspan=2 colspan="3" style="text-indent:2em" | 108.160(3) keV
| rowspan=2|1.257(6) min
| IT (97.76%)
| <sup>165</sup>Dy
| rowspan=2|1/2-
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup> (2.24%)
| '''<sup>165</sup>Ho'''
|-
| <sup>166</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 100
| 165.9328067(28)
| 81.6(1) h
| β<sup>-</sup>
| <sup>166</sup>Ho
| 0+
|
|
|-
| <sup>167</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 101
| 166.93566(6)
| 6.20(8) min
| β<sup>-</sup>
| <sup>167</sup>Ho
| (1/2-)
|
|
|-
| <sup>168</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 102
| 167.93713(15)
| 8.7(3) min
| β<sup>-</sup>
| <sup>168</sup>Ho
| 0+
|
|
|-
| <sup>169</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 103
| 168.94031(32)
| 39(8) s
| β<sup>-</sup>
| <sup>169</sup>Ho
| (5/2-)
|
|
|-
| <sup>170</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 104
| 169.94239(21)#
| 30# s
| β<sup>-</sup>
| <sup>170</sup>Ho
| 0+
|
|
|-
| <sup>171</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 105
| 170.94620(32)#
| 6# s
| β<sup>-</sup>
| <sup>171</sup>Ho
| 7/2-#
|
|
|-
| <sup>172</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 106
| 171.94876(43)#
| 3# s
| β<sup>-</sup>
| <sup>172</sup>Ho
| 0+
|
|
|-
| <sup>173</sup>Dy
| style="text-align:right" | 66
| style="text-align:right" | 107
| 172.95300(54)#
| 2# s
| β<sup>-</sup>
| <sup>173</sup>Ho
| 9/2+#
|
|
|}
{{각주|group="n"}}

== 각주 ==
{{각주}}

{{동위 원소 색인}}

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