Format:Exemple de masă critică
| Nucleu - izotop | Timp de înjumătățire (în ani sau zile) |
Masă critică (în kg) |
Diametru (în cm) |
Ref |
|---|---|---|---|---|
| Uraniu - 233 | 159,200 | 15 | 11 | [1] |
| Uraniu - 235 | 703,800,000 | 52 | 17 | [1] |
| Neptuniu - 236 | 154,000 | 7 | 8.7 | [2] |
| Neptuniu - 237 | 2,144,000 | 60 | 18 | [3][4] |
| Plutoniu - 238 | 87.7 | 9.04–10.07 | 9.5–9.9 | [5] |
| Plutoniu - 239 | 24,110 | 10 | 9.9 | [1][5] |
| Plutoniu - 240 | 6561 | 40 | 15 | [1] |
| Plutoniu - 241 | 14.3 | 12 | 10.5 | [6] |
| Plutoniu - 242 | 375,000 | 75–100 | 19–21 | [6] |
| Americiu - 241 | 432.2 | 55–77 | 20–23 | [7] |
| Americiu - 242 m | 141 | 9–14 | 11–13 | [7] |
| Americiu - 243 | 7370 | 180–280 | 30–35 | [7] |
| Curiu - 243 | 29.1 | 7.34–10 | 10–11 | [8] |
| Curiu - 244 | 18.1 | 13.5–30 | 12.4–16 | [8] |
| Curiu - 245 | 8500 | 9.41–12.3 | 11–12 | [8] |
| Curiu - 246 | 4760 | 39–70.1 | 18–21 | [8] |
| Curiu - 247 | 15,600,000 | 6.94–7.06 | 9.9 | [8] |
| Berkeliu - 247 | 1380 | 75.7 | 11.8-12.2 | [9] |
| Berkeliu - 249 | 330 zile | 192 | 16.1-16.6 | [9] |
| Californiu - 249 | 351 | 6 | 9 | [2] |
| Californiu - 251 | 290 | 5 | 8.5 | [2] |
| Californiu - 252 | 2.6 | 2.73 | 6.9 | [10] |
| Einsteiniu - 254 | 275.7 zile | 9.89 | 7.1 | [9] |
- ^ a b c d Nuclear Weapons Design & Materials, The Nuclear Threat Initiative website.
- ^ a b c Final Report, Evaluation of nuclear criticality safety data and limits for actinides in transport, Republic of France, Institut de Radioprotection et de Sûreté Nucléaire, Département de Prévention et d'étude des Accidents.
- ^ Chapter 5, Troubles tomorrow? Separated Neptunium 237 and Americium, Challenges of Fissile Material Control (1999), isis-online.org
- ^ http://www.lanl.gov/news/index.php?fuseaction=home.story&story_id=1348Format:Citation broken
- ^ a b Updated Critical Mass Estimates for Plutonium-238, U.S. Department of Energy: Office of Scientific & Technical Information
- ^ a b Amory B. Lovins, Nuclear weapons and power-reactor plutonium, Nature, Vol. 283, No. 5750, pp. 817–823, February 28, 1980
- ^ a b c http://typhoon.tokai-sc.jaea.go.jp/icnc2003/Proceeding/paper/6.5_022.pdfFormat:Citation broken Dias et al.
- ^ a b c d e Hirshi Okuno and Hirumitsu Kawasaki, Technical Report, Critical and Subcritical Mass Calculations for Curium-243 to -247 , Japan National Institute of Informatics, Reprinted from Journal of Nuclear Science and Technology, Vol. 39, No. 10, p.1072–1085 (October 2002)Format:Copyvio link
- ^ a b c Institut de Radioprotection et de Sûreté Nucléaire: "Evaluation of nuclear criticality safety. data and limits for actinides in transport", p. 16
- ^ [1]