{{위키데이터 속성 추적}}
'''[[아스타틴]]'''은 [[안정 동위 원소]] 없이 오직 [[방사성 동위 원소]]로만 구성되어 있으며, 원자량 191에서 229 사이에 32가지의 [[동위 원소]]<ref name="ffff">{{저널 인용 |first1=G |last1=Audi |first2=A H |last2=Wapstra |first3=C |last3=Thibault |first4=J |last4=Blachot |first5=O |last5=Bersillon |year=2003 |title=The NUBASE evaluation of nuclear and decay properties |url=http://www.nndc.bnl.gov/amdc/nubase/Nubase2003.pdf |journal=[[Nuclear Physics A]] |volume=729 |pages=3–128 |doi=10.1016/j.nuclphysa.2003.11.001 |bibcode=2003NuPhA.729....3A |확인날짜=2008년 9월 23일 |보존url=https://web.archive.org/web/20080923135135/http://www.nndc.bnl.gov/amdc/nubase/Nubase2003.pdf |보존날짜=2008년 9월 23일 |url-status=dead }}</ref>와 23가지의 [[이성질핵]]이 알려져 있다. 이들 중 가장 안정한 것은 <sup>210</sup>At로 반감기는 약 8.1시간이며, 주로 [[양전자 방출]]을 통해 <sup>210</sup>[[폴로늄|Po]]으로 붕괴한다. 자연에 존재하는 [[붕괴 계열]] 상의 가장 안정한 동위 원소는 <sup>219</sup>At로, 반감기는 56초이다.

== 표 ==
{| class="wikitable" style="font-size:95%; white-space:nowrap"
! rowspan="2" | 핵종<br />기호
! 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">약자:<br />ε: [[전자 포획]]<br />IT: [[이성질핵 전이]]</ref>
! rowspan="2" | 붕괴<br />생성물
! rowspan="2" | 핵<br />스핀
! rowspan="2" | 전형적<br />동위 원소<br />구성비<br />(몰 분율)
! rowspan="2" | 자연적<br />구성비<br />변동 범위<br />(몰 분율)
|-
! colspan="3" | 들뜬 에너지
|-
| <sup>191</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 106
|
| 1.7(+11-5) ms
|
|
| (1/2+)
|
|
|-
| style="text-indent:1em" | <sup>191m</sup>At
| colspan="3" style="text-indent:2em" |
| 2.1(+4-3) ms
|
|
| (7/2-)
|
|
|-
| <sup>193</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 108
| 192.99984(6)
| 28(+5-4) ms
| [[알파 붕괴|α]]
| <sup>189</sup>Bi
| (1/2+)
|
|
|-
| style="text-indent:1em" | <sup>193m1</sup>At
| colspan="3" style="text-indent:2em" | 50 keV
| 21(5) ms
|
|
| (7/2-)
|
|
|-
| style="text-indent:1em" | <sup>193m2</sup>At
| colspan="3" style="text-indent:2em" | 39 keV
| 27(+4-5) ms
|
|
| (13/2+)
|
|
|-
| rowspan=2|<sup>194</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 109
| rowspan=2|193.99873(20)
| rowspan=2|~40 ms
| α
| <sup>190</sup>Bi
| rowspan=2|3+#
| rowspan=2|
| rowspan=2|
|-
| [[베타 붕괴|β<sup>+</sup>]] (드묾)
| <sup>194</sup>Po
|-
| rowspan=2 style="text-indent:1em" | <sup>194m</sup>At
| rowspan=2 colspan="3" style="text-indent:2em" | 480(190) keV
| rowspan=2|~250 ms
| α
| <sup>190</sup>Bi
| rowspan=2|10-#
| rowspan=2|
| rowspan=2|
|-
| [[이성질핵 전이|IT]] (드묾)
| <sup>194</sup>At
|-
| rowspan=2|<sup>195</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 110
| rowspan=2|194.996268(10)
| rowspan=2|328(20) ms
| α (75%)
| <sup>191</sup>Bi
| rowspan=2|(1/2+)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (25%)
| <sup>195</sup>Po
|-
| style="text-indent:1em" | <sup>195m</sup>At
| colspan="3" style="text-indent:2em" | 34(7) keV
| 147(5) ms
|
|
| 9/2-#
|
|
|-
| rowspan=2|<sup>196</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 111
| rowspan=2|195.99579(6)
| rowspan=2|253(9) ms
| α (96%)
| <sup>192</sup>Bi
| rowspan=2|3+#
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (4.0%)
| <sup>196</sup>Po
|-
| style="text-indent:1em" | <sup>196m1</sup>At
| colspan="3" style="text-indent:2em" | -30(80) keV
| 20# ms
|
|
| 10-#
|
|
|-
| style="text-indent:1em" | <sup>196m2</sup>At
| colspan="3" style="text-indent:2em" | 157.9(1) keV
| 11 µs
|
|
| 5+#
|
|
|-
| rowspan=2|<sup>197</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 112
| rowspan=2|196.99319(5)
| rowspan=2|0.390(16) s
| α (96%)
| <sup>193</sup>Bi
| rowspan=2|(9/2-)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (4.0%)
| <sup>197</sup>Po
|-
| style="text-indent:1em" | <sup>197m</sup>At
| colspan="3" style="text-indent:2em" | 52(10) keV
| 2.0(2) s
|
|
| (1/2+)
|
|
|-
| rowspan=2|<sup>198</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 113
| rowspan=2|197.99284(5)
| rowspan=2|4.2(3) s
| α (94%)
| <sup>194</sup>Bi
| rowspan=2|(3+)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (6%)
| <sup>198</sup>Po
|-
| style="text-indent:1em" | <sup>198m</sup>At
| colspan="3" style="text-indent:2em" | 330(90)# keV
| 1.0(2) s
|
|
| (10-)
|
|
|-
| rowspan=2|<sup>199</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 114
| rowspan=2|198.99053(5)
| rowspan=2|6.92(13) s
| α (89%)
| <sup>195</sup>Bi
| rowspan=2|(9/2-)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (11%)
| <sup>199</sup>Po
|-
| rowspan=2|<sup>200</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 115
| rowspan=2|199.990351(26)
| rowspan=2|43.2(9) s
| α (57%)
| <sup>196</sup>Bi
| rowspan=2|(3+)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (43%)
| <sup>200</sup>Po
|-
| rowspan=3 style="text-indent:1em" | <sup>200m1</sup>At
| rowspan=3 colspan="3" style="text-indent:2em" | 112.7(30) keV
| rowspan=3|47(1) s
| α (43%)
| <sup>196</sup>Bi
| rowspan=3|(7+)
| rowspan=3|
| rowspan=3|
|-
| IT
| <sup>200</sup>At
|-
| β<sup>+</sup>
| <sup>200</sup>Po
|-
| style="text-indent:1em" | <sup>200m2</sup>At
| colspan="3" style="text-indent:2em" | 344(3) keV
| 3.5(2) s
|
|
| (10-)
|
|
|-
| rowspan=2|<sup>201</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 116
| rowspan=2|200.988417(9)
| rowspan=2|85(3) s
| α (71%)
| <sup>197</sup>Bi
| rowspan=2|(9/2-)
| rowspan=2|
| rowspan=2|
|-
| β<sup>+</sup> (29%)
| <sup>201</sup>Po
|-
| rowspan=2|<sup>202</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 117
| rowspan=2|201.98863(3)
| rowspan=2|184(1) s
| β<sup>+</sup> (88%)
| <sup>202</sup>Po
| rowspan=2|(2,3)+
| rowspan=2|
| rowspan=2|
|-
| α (12%)
| <sup>198</sup>Bi
|-
| style="text-indent:1em" | <sup>202m1</sup>At
| colspan="3" style="text-indent:2em" | 190(40) keV
| 182(2) s
|
|
| (7+)
|
|
|-
| style="text-indent:1em" | <sup>202m2</sup>At
| colspan="3" style="text-indent:2em" | 580(40) keV
| 460(50) ms
|
|
| (10-)
|
|
|-
| rowspan=2|<sup>203</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 118
| rowspan=2|202.986942(13)
| rowspan=2|7.37(13) min
| β<sup>+</sup> (69%)
| <sup>203</sup>Po
| rowspan=2|9/2-
| rowspan=2|
| rowspan=2|
|-
| α (31%)
| <sup>199</sup>Bi
|-
| rowspan=2|<sup>204</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 119
| rowspan=2|203.987251(26)
| rowspan=2|9.2(2) min
| β<sup>+</sup> (96%)
| <sup>204</sup>Po
| rowspan=2|7+
| rowspan=2|
| rowspan=2|
|-
| α (3.8%)
| <sup>200</sup>Bi
|-
| style="text-indent:1em" | <sup>204m</sup>At
| colspan="3" style="text-indent:2em" | 587.30(20) keV
| 108(10) ms
| IT
| <sup>204</sup>At
| (10-)
|
|
|-
| rowspan=2|<sup>205</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 120
| rowspan=2|204.986074(16)
| rowspan=2|26.2(5) min
| β<sup>+</sup> (90%)
| <sup>205</sup>Po
| rowspan=2|9/2-
| rowspan=2|
| rowspan=2|
|-
| α (10%)
| <sup>201</sup>Bi
|-
| style="text-indent:1em" | <sup>205m</sup>At
| colspan="3" style="text-indent:2em" | 2339.65(23) keV
| 7.76(14) µs
|
|
| 29/2+
|
|
|-
| rowspan=2|<sup>206</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 121
| rowspan=2|205.986667(22)
| rowspan=2|30.6(13) min
| β<sup>+</sup> (99.11%)
| <sup>206</sup>Po
| rowspan=2|(5)+
| rowspan=2|
| rowspan=2|
|-
| α (0.9%)
| <sup>202</sup>Bi
|-
| style="text-indent:1em" | <sup>206m</sup>At
| colspan="3" style="text-indent:2em" | 807(3) keV
| 410(80) ns
|
|
| (10)-
|
|
|-
| rowspan=2|<sup>207</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 122
| rowspan=2|206.985784(23)
| rowspan=2|1.80(4) h
| β<sup>+</sup> (91%)
| <sup>207</sup>Po
| rowspan=2|9/2-
| rowspan=2|
| rowspan=2|
|-
| α (8.6%)
| <sup>203</sup>Bi
|-
| rowspan=2|<sup>208</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 123
| rowspan=2|207.986590(28)
| rowspan=2|1.63(3) h
| β<sup>+</sup> (99.5%)
| <sup>208</sup>Po
| rowspan=2|6+
| rowspan=2|
| rowspan=2|
|-
| α (0.55%)
| <sup>204</sup>Bi
|-
| rowspan=2|<sup>209</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 124
| rowspan=2|208.986173(8)
| rowspan=2|5.41(5) h
| β<sup>+</sup> (96%)
| <sup>209</sup>Po
| rowspan=2|9/2-
| rowspan=2|
| rowspan=2|
|-
| α (4.0%)
| <sup>205</sup>Bi
|-
| rowspan=2|<sup>210</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 125
| rowspan=2|209.987148(8)
| rowspan=2|8.1(4) h
| β<sup>+</sup> (99.8%)
| <sup>210</sup>Po
| rowspan=2|(5)+
| rowspan=2|
| rowspan=2|
|-
| α (0.18%)
| <sup>206</sup>Bi
|-
| style="text-indent:1em" | <sup>210m1</sup>At
| colspan="3" style="text-indent:2em" | 2549.6(2) keV
| 482(6) µs
|
|
| (15)-
|
|
|-
| style="text-indent:1em" | <sup>210m2</sup>At
| colspan="3" style="text-indent:2em" | 4027.7(2) keV
| 5.66(7) µs
|
|
| (19)+
|
|
|-
| rowspan=2|<sup>211</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 126
| rowspan=2|210.9874963(30)
| rowspan=2|7.214(7) h
| [[전자 포획|ε]] (58.2%)
| <sup>211</sup>Po
| rowspan=2|9/2-
| rowspan=2|
| rowspan=2|
|-
| α (42%)
| <sup>207</sup>Bi
|-
| rowspan=3|<sup>212</sup>At
| rowspan=3 style="text-align:right" | 85
| rowspan=3 style="text-align:right" | 127
| rowspan=3|211.990745(8)
| rowspan=3|0.314(2) s
| α (99.95%)
| <sup>208</sup>Bi
| rowspan=3|(1-)
| rowspan=3|
| rowspan=3|
|-
| β<sup>+</sup> (0.05%)
| <sup>212</sup>Po
|-
| β<sup>-</sup> (2&times;10<sup>−6</sup>%)
| <sup>212</sup>Rn
|-
| rowspan=2 style="text-indent:1em" | <sup>212m1</sup>At
| rowspan=2 colspan="3" style="text-indent:2em" | 223(7) keV
| rowspan=2|0.119(3) s
| α (99%)
| <sup>208</sup>Bi
| rowspan=2|(9-)
| rowspan=2|
| rowspan=2|
|-
| IT (1%)
| <sup>212</sup>At
|-
| style="text-indent:1em" | <sup>212m2</sup>At
| colspan="3" style="text-indent:2em" | 4771.6(11) keV
| 152(5) µs
|
|
| (25-)
|
|
|-
| <sup>213</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 128
| 212.992937(5)
| 125(6) ns
| α
| '''''<sup>209</sup>Bi'''''
| 9/2-
|
|
|-
| <sup>214</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 129
| 213.996372(5)
| 558(10) ns
| α
| <sup>210</sup>Bi
| 1-
|
|
|-
| style="text-indent:1em" | <sup>214m1</sup>At
| colspan="3" style="text-indent:2em" | 59(9) keV
| 265(30) ns
|
|
|
|
|
|-
| style="text-indent:1em" | <sup>214m2</sup>At
| colspan="3" style="text-indent:2em" | 231(6) keV
| 760(15) ns
|
|
| 9-
|
|
|-
| <sup>215</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 130
| 214.998653(7)
| 0.10(2) ms
| α
| <sup>211</sup>Bi
| 9/2-
| 미량<ref group="n" name="as">[[우라늄-235|<sup>235</sup>U]]의 중간 [[붕괴 생성물]]</ref>
|
|-
| rowspan=3|<sup>216</sup>At
| rowspan=3 style="text-align:right" | 85
| rowspan=3 style="text-align:right" | 131
| rowspan=3|216.002423(4)
| rowspan=3|0.30(3) ms
| α (99.99%)
| <sup>212</sup>Bi
| rowspan=3|1-
| rowspan=3|
| rowspan=3|
|-
| β<sup>-</sup> (0.006%)
| <sup>216</sup>Rn
|-
| ε (3&times;10<sup>−7</sup>%)
| <sup>216</sup>Po
|-
| style="text-indent:1em" | <sup>216m</sup>At
| colspan="3" style="text-indent:2em" | 413(5) keV
| 100# µs
|
|
| (9-)
|
|
|-
| rowspan=2|<sup>217</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 132
| rowspan=2|217.004719(5)
| rowspan=2|32.3(4) ms
| α (99.98%)
| <sup>213</sup>Bi
| rowspan=2|9/2-
| rowspan=2|
| rowspan=2|
|-
| β<sup>-</sup> (0.012%)
| <sup>217</sup>Rn
|-
| rowspan=2|<sup>218</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 133
| rowspan=2|218.008694(12)
| rowspan=2|1.5(3) s
| α (99.9%)
| <sup>214</sup>Bi
| rowspan=2|1-#
| rowspan=2|미량<ref group="n">[[우라늄-238|<sup>238</sup>U]]의 중간 [[붕괴 생성물]]</ref>
| rowspan=2|
|-
| β<sup>-</sup> (0.10%)
| <sup>218</sup>Rn
|-
| rowspan=2|<sup>219</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 134
| rowspan=2|219.011162(4)
| rowspan=2|56(3) s
| α (97%)
| <sup>215</sup>Bi
| rowspan=2|5/2-#
| rowspan=2|미량<ref group="n" name="as" />
| rowspan=2|
|-
| β<sup>-</sup> (3.0%)
| <sup>219</sup>Rn
|-
| rowspan=2|<sup>220</sup>At
| rowspan=2 style="text-align:right" | 85
| rowspan=2 style="text-align:right" | 135
| rowspan=2|220.01541(6)
| rowspan=2|3.71(4) min
| β<sup>-</sup> (92%)
| <sup>220</sup>Rn
| rowspan=2|3(-#)
| rowspan=2|
| rowspan=2|
|-
| α (8.0%)
| <sup>216</sup>Bi
|-
| <sup>221</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 136
| 221.01805(21)#
| 2.3(2) min
| β<sup>-</sup>
| <sup>221</sup>Rn
| 3/2-#
|
|
|-
| <sup>222</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 137
| 222.02233(32)#
| 54(10) s
| β<sup>-</sup>
| <sup>222</sup>Rn
|
|
|
|-
| <sup>223</sup>At
| style="text-align:right" | 85
| style="text-align:right" | 138
| 223.02519(43)#
| 50(7) s
|
|
| 3/2-#
|
|
|}

== 각주 ==
{{각주}}

; 내용주
<references group="n" />

{{동위 원소 색인}}

{{전거 통제}}

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