Magnesium Mg Kernladungszahl Z=12 (p=12) |
| Mg(n+p) | n | Schwere Isotop | Schwere Kern | Häufig- keit | Spin/ Parität | Stabilität | Halbwerts- zeit [s] | Zerfalls- arten | Zerfalls- energie [eV] | Defekt- energie [eV] | Bindungs- energie [eV] | Wirkungsquer- schnitt [barn] |
|
1. | Mg24 | 12 | 23.98504231 | 23.97845935 | 78.99% | 0+ | | stabil | | | -13.933E6 | 198.257E6 | 52#σ(n.γ) |
2. | Mg26 | 14 | 25.98259291 | 25.97600995 | 11.01% | 0+ | | stabil | | | -16.2146E6 | 216.681E6 | 38.2#σ(n.γ) |
3. | Mg25 | 13 | 24.98583695 | 24.97925399 | 10.00% | 5/2+ | | stabil | | | -13.1928E6 | 205.588E6 | 0.18#σ(n.γ) |
4. | Mg23 | 11 | 22.99412449 | 22.98754153 | | 3/2+ | radioakt. | 11.317 | K/β+=100 | 4.057E6 | -5.473E6 | 181.725E6 | |
5. | Mg22 | 10 | 21.99957488 | 21.99299192 | | 0+ | radioakt. | 3.8755 | K/β+=100 | 4.786E6 | -0.396E6 | 168.577E6 | |
6. | Mg21 | 9 | 21.0117129 | 21.00512994 | | 5/2+ | radioakt. | 122E-3 | K/β+=66.9; Kp=32.6; Kα=0.5 | 13.094E6(K/β+); 10.663E6(Kp); 6.534E6(Kα) | 10.9105E6 | 149.199E6 | |
7. | Mg20 | 8 | 20.01886249 | 20.01227953 | | 0+ | radioakt. | 908E-3 | K/β+=73; Kp=27 | 10.723E6(K/β+); 8.53E6(Kp) | 17.5703E6 | 134.468E6 | |
8. | Mg27 | 15 | 26.98434128 | 26.97775833 | | 1/2+ | radioakt. | 567.48 | ß-=100 | 2.61E6 | -14.586E6 | 223.124E6 | 70E-3#σ(n.γ) |
9. | Mg28 | 16 | 27.98387687 | 27.97729391 | | 0+ | radioakt. | 75294 | ß-=100 | 1.832E6 | -15.0186E6 | 231.627E6 | |
10. | Mg29 | 17 | 28.98860003 | 28.98201708 | | 3/2+ | radioakt. | 1.3 | ß-=100 | 7.596E6 | -10.619E6 | 235.299E6 | |
11. | Mg30 | 18 | 29.99043472 | 29.98385176 | | 0+ | radioakt. | 335E-3 | ß-=100 | 6.962E6 | -8.91E6 | 241.662E6 | |
12. | Mg31 | 19 | 30.99654641 | 30.98996345 | | 1/2+ | radioakt. | 232E-3 | ß-=98.3; β−n=1.7 | 11.737E6(β−); 4.584E6(β−n) | -3.217E6 | 244.04E6 | |
13. | Mg32 | 20 | 31.99897498 | 31.99239202 | | 0+ | radioakt. | 86E-3 | ß-=94.5; β−n=5.5 | 10.106E6(β−); 5.927E6(β−n) | -0.9548E6 | 249.849E6 | |
14. | Mg33 | 21 | 33.00525393 | 32.99867097 | | 3/2+ | radioakt. | 90.5E-3 | ß-=83; β−n=17 | 13.423E6(β−); 7.884E6(β−n) | 4.894E6 | 252.071E6 | |
15. | Mg34 | 22 | 34.00945578 | 34.00287282 | | 0+ | radioakt. | 20E-3 | ß-=90; β−n=10 | 11.741E6(β−); 9.266E6(β−n) | 8.808E6 | 256.229E6 | |
16. | Mg35 | 23 | 35.01733989 | 35.01075693 | | 7/2- | radioakt. | 70E-3 | ß-=48; β−n=52 | 16.282E6(ß-); 11.013E6(ß-n) | 16.152E6 | 256.956E6 | |
17. | Mg36 | 24 | 36.02299961 | 36.01641665 | | 0+ | radioakt. | 3.9E-3 | ß-=60; β−n=40 | 15.642E6(β−); 13.483E6(β−n) | 21.424E6 | 259.755E6 | |
18. | Mg37 | 25 | 37.03140009 | 37.02481714 | | 7/2- | radioakt. | 40E-3 | ß-=<100; β−n=>0 | 19.303E6(β−); 15.396E6(β−n) | 29.249E6 | 260.002E6 | |
19. | Mg38 | 26 | 38.03756975 | 38.03098679 | | 0+ | radioakt. | 1E-3 | ß-=>0; β−n=<100 | 18.946E6(β−); 16.978E6(β−n) | 34.996E6 | 262.326E6 | |
20. | Mg39 | 27 | 39.04677217 | 39.04018921 | | 7/2− | radioakt. | 180E-9 | n=100 | 19.447E6 | 43.568E6 | 261.825E6 | |
21. | Mg40 | 28 | 40.05392949 | 40.04734653 | | 0+ | radioakt. | 1E−3 | ß-=>0; β−n=>0 | 20.94E6(β−); 20.768E6(β−n) | 50.235E6 | 263.23E6 | |