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同位体核種 | Z(p) | N(n) | 同位体質量 (u) | 半減期 | 核スピン数 | 天然存在比 | 天然存在比 (範囲) |
---|---|---|---|---|---|---|---|
励起エネルギー | |||||||
232Cm | 96 | 136 | 1? min | 0+ | |||
233Cm | 96 | 137 | 233.05077(8) | 1# min | 3/2+# | ||
234Cm | 96 | 138 | 234.05016(2) | 51(12) s | 0+ | ||
235Cm | 96 | 139 | 235.05143(22)# | 5# min | 5/2+# | ||
236Cm | 96 | 140 | 236.05141(22)# | 10# min | 0+ | ||
237Cm | 96 | 141 | 237.05290(22)# | 20# min | 5/2+# | ||
238Cm | 96 | 142 | 238.05303(4) | 2.4(1) h | 0+ | ||
239Cm | 96 | 143 | 239.05496(11)# | ~2.9 h | (7/2-) | ||
240Cm | 96 | 144 | 240.0555295(25) | 27(1) d | 0+ | ||
241Cm | 96 | 145 | 241.0576530(23) | 32.8(2) d | 1/2+ | ||
242Cm | 96 | 146 | 242.0588358(20) | 162.8(2) d | 0+ | ||
243Cm | 96 | 147 | 243.0613891(22) | 29.1(1) a | 5/2+ | ||
243mCm | 87.4(1) keV | 1.08(3) µs | 1/2+ | ||||
244Cm | 96 | 148 | 244.0627526(20) | 18.10(2) a | 0+ | ||
244mCm | 1040.188(12) keV | 34(2) ms | 6+ | ||||
245Cm | 96 | 149 | 245.0654912(22) | 8.5(1)E+3 a | 7/2+ | ||
245mCm | 355.90(10) keV | 290(20) ns | 1/2+ | ||||
246Cm | 96 | 150 | 246.0672237(22) | 4.76(4)E+3 a | 0+ | ||
247Cm | 96 | 151 | 247.070354(5) | 1.56(5)E+7 a | 9/2- | ||
248Cm | 96 | 152 | 248.072349(5) | 3.48(6)E+5 a | 0+ | ||
249Cm | 96 | 153 | 249.075953(5) | 64.15(3) min | 1/2(+) | ||
249mCm | 48.758(17) keV | 23 µs | (7/2+) | ||||
250Cm | 96 | 154 | 250.078357(12) | 8300# a | 0+ | ||
251Cm | 96 | 155 | 251.082285(24) | 16.8(2) min | (1/2+) | ||
252Cm | 96 | 156 | 252.08487(32)# | <1 d | 0+ |
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