프로트악티늄 동위 원소
표

| 핵종 기호 | 역사적 이름 | Z(p)> 들뜬 에너지 | N(n)> 들뜬 에너지 |   동위 원소 질량 (u)  > 들뜬 에너지 | 반감기 | 붕괴 방식 | 붕괴 생성물 | 핵 스핀 | 전형적 동위 원소 구성비 (몰 분율) | 자연적 구성비 변동 범위 (몰 분율) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 212Pa |  | 91 | 121 | 212.02320(8) | 8(5) ms [5.1(+61-19) ms] |  |  | 7+# |  |  |
| 213Pa |  | 91 | 122 | 213.02111(8) | 7(3) ms [5.3(+40-16) ms] | α | 209Ac | 9/2-# |  |  |
| 214Pa |  | 91 | 123 | 214.02092(8) | 17(3) ms | α | 210Ac |  |  |  |
| 215Pa |  | 91 | 124 | 215.01919(9) | 14(2) ms | α | 211Ac | 9/2-# |  |  |
| 216Pa |  | 91 | 125 | 216.01911(8) | 105(12) ms | α (80%) | 212Ac |  |  |  |
| 216Pa |  | 91 | 125 | 216.01911(8) | 105(12) ms | β+ (20%) | 216Th |  |  |  |
| 217Pa |  | 91 | 126 | 217.01832(6) | 3.48(9) ms | α | 213Ac | 9/2-# |  |  |
| 217mPa |  | 1860(7) keV | 1860(7) keV | 1860(7) keV | 1.08(3) ms | α | 213Ac | 29/2+# |  |  |
| 217mPa |  | 1860(7) keV | 1860(7) keV | 1860(7) keV | 1.08(3) ms | IT (드묾) | 217Pa | 29/2+# |  |  |
| 218Pa |  | 91 | 127 | 218.020042(26) | 0.113(1) ms | α | 214Ac |  |  |  |
| 219Pa |  | 91 | 128 | 219.01988(6) | 53(10) ns | α | 215Ac | 9/2- |  |  |
| 219Pa |  | 91 | 128 | 219.01988(6) | 53(10) ns | β+ (5×10−9%) | 219Th | 9/2- |  |  |
| 220Pa |  | 91 | 129 | 220.02188(6) | 780(160) ns | α | 216Ac | 1-# |  |  |
| 221Pa |  | 91 | 130 | 221.02188(6) | 4.9(8) µs | α | 217Ac | 9/2- |  |  |
| 222Pa |  | 91 | 131 | 222.02374(8)# | 3.2(3) ms | α | 218Ac |  |  |  |
| 223Pa |  | 91 | 132 | 223.02396(8) | 5.1(6) ms | α | 219Ac |  |  |  |
| 223Pa |  | 91 | 132 | 223.02396(8) | 5.1(6) ms | β+ (0.001%) | 223Th |  |  |  |
| 224Pa |  | 91 | 133 | 224.025626(17) | 844(19) ms | α (99.9%) | 220Ac | 5-# |  |  |
| 224Pa |  | 91 | 133 | 224.025626(17) | 844(19) ms | β+ (0.1%) | 224Th | 5-# |  |  |
| 225Pa |  | 91 | 134 | 225.02613(8) | 1.7(2) s | α | 221Ac | 5/2-# |  |  |
| 226Pa |  | 91 | 135 | 226.027948(12) | 1.8(2) min | α (74%) | 222Ac |  |  |  |
| 226Pa |  | 91 | 135 | 226.027948(12) | 1.8(2) min | β+ (26%) | 226Th |  |  |  |
| 227Pa |  | 91 | 136 | 227.028805(8) | 38.3(3) min | α (85%) | 223Ac | (5/2-) |  |  |
| 227Pa |  | 91 | 136 | 227.028805(8) | 38.3(3) min | ε (15%) | 227Th | (5/2-) |  |  |
| 228Pa |  | 91 | 137 | 228.031051(5) | 22(1) h | β+ (98.15%) | 228Th | 3+ |  |  |
| 228Pa |  | 91 | 137 | 228.031051(5) | 22(1) h | α (1.85%) | 224Ac | 3+ |  |  |
| 229Pa |  | 91 | 138 | 229.0320968(30) | 1.50(5) d | ε (99.52%) | 229Th | (5/2+) |  |  |
| 229Pa |  | 91 | 138 | 229.0320968(30) | 1.50(5) d | α (0.48%) | 225Ac | (5/2+) |  |  |
| 229mPa |  | 11.6(3) keV | 11.6(3) keV | 11.6(3) keV | 420(30) ns |  |  | 3/2- |  |  |
| 230Pa |  | 91 | 139 | 230.034541(4) | 17.4(5) d | β+ (91.6%) | 230Th | (2-) |  |  |
| 230Pa |  | 91 | 139 | 230.034541(4) | 17.4(5) d | β- (8.4%) | 230U | (2-) |  |  |
| 230Pa |  | 91 | 139 | 230.034541(4) | 17.4(5) d | α (0.00319%) | 226Ac | (2-) |  |  |
| 231Pa | 프로토악티늄 | 91 | 140 | 231.0358840(24) | 3.276(11)×104 y | α | 227Ac | 3/2- | 1.0000 |  |
| 231Pa | 프로토악티늄 | 91 | 140 | 231.0358840(24) | 3.276(11)×104 y | CD (1.34×10−9%) | 207Tl 24Ne | 3/2- | 1.0000 |  |
| 231Pa | 프로토악티늄 | 91 | 140 | 231.0358840(24) | 3.276(11)×104 y | SF (3×10−10%) | 다양 | 3/2- | 1.0000 |  |
| 231Pa | 프로토악티늄 | 91 | 140 | 231.0358840(24) | 3.276(11)×104 y | CD (10−12%) | 208Pb 23F | 3/2- | 1.0000 |  |
| 232Pa |  | 91 | 141 | 232.038592(8) | 1.31(2) d | β- | 232U | (2-) |  |  |
| 232Pa |  | 91 | 141 | 232.038592(8) | 1.31(2) d | ε (0.003%) | 232Th | (2-) |  |  |
| 233Pa |  | 91 | 142 | 233.0402473(23) | 26.975(13) d | β- | 233U | 3/2- |  |  |
| 234Pa | 우라늄 Z | 91 | 143 | 234.043308(5) | 6.70(5) h | β- | 234U | 4+ | 미량 |  |
| 234Pa | 우라늄 Z | 91 | 143 | 234.043308(5) | 6.70(5) h | SF (3×10−10%) | 다양 | 4+ | 미량 |  |
| 234mPa | 우라늄 X2 브레븀 | 78(3) keV | 78(3) keV | 78(3) keV | 1.17(3) min | β- (99.83%) | 234U | (0-) | 미량 |  |
| 234mPa | 우라늄 X2 브레븀 | 78(3) keV | 78(3) keV | 78(3) keV | 1.17(3) min | IT (0.16%) | 234Pa | (0-) | 미량 |  |
| 234mPa | 우라늄 X2 브레븀 | 78(3) keV | 78(3) keV | 78(3) keV | 1.17(3) min | SF (10−10%) | 다양 | (0-) | 미량 |  |
| 235Pa |  | 91 | 144 | 235.04544(5) | 24.44(11) min | β- | 235U | (3/2-) |  |  |
| 236Pa |  | 91 | 145 | 236.04868(21) | 9.1(1) min | β- | 236U | 1(-) |  |  |
| 236Pa |  | 91 | 145 | 236.04868(21) | 9.1(1) min | β-, SF (6×10−8%) | 다양 | 1(-) |  |  |
| 237Pa |  | 91 | 146 | 237.05115(11) | 8.7(2) min | β- | 237U | (1/2+) |  |  |
| 238Pa |  | 91 | 147 | 238.05450(6) | 2.27(9) min | β- | 238U | (3-)# |  |  |
| 238Pa |  | 91 | 147 | 238.05450(6) | 2.27(9) min | β-, SF (2.6×10−6%) | 다양 | (3-)# |  |  |
| 239Pa |  | 91 | 148 | 239.05726(21)# | 1.8(5) h | β- | 239U | (3/2)(-#) |  |  |
| 240Pa |  | 91 | 149 | 240.06098(32)# | 2# min | β- | 240U |  |  |  |