Talk:Isotopes of curium
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Possible β− decay of 247Cm[edit]
Should it be noted that 247Cm is theorized to undergo β− decay? Of course, the decay energy is very small (around 43.8 keV, lower than possible electron capture of 123Te).
| Decay process | Qβ (keV) | Spin change | Half-life (a) |
|---|---|---|---|
| 113Cd → 113In | 320.34 | 1/2+ → 9/2+ (ΔJΔπ = 4+, 4 forbidden non-unique) | 8.04×1015 |
| 115In → 115Sn | 499.36 | 9/2+ → 1/2+ (ΔJΔπ = 4+, 4 forbidden non-unique) | 4.41×1014 |
| 123Te → 123Sb | 52.22 | 1/2+ → 7/2+ (ΔJΔπ = 3+, 2 forbidden unique) | (4.2−7.2)×1019 (predicted) |
| 247Cm → 247Bk | 43.8 | 9/2− → 3/2− (ΔJΔπ = 3+, 2 forbidden unique) | ? |
129.104.241.214 (talk) 19:00, 3 November 2023 (UTC)
Curium-244 should have abundance marked as "trace"[edit]
In isotopes of plutonium, it is noted that there is a small amount of natural plutonium-244 in the earth. Assuming there are 2.5x10^21 atoms of natural Pu-244 in the earth (10 grams), Pu-244 has a half life of 8x10^7 years (2.5x10^15 seconds), Cm-244 has a half-life of 18 years, and Pu-244 has a 1 in 7x10^11 chance of double beta decay to Cm-244, then the following are true:
1. ~10^6 Pu-244 atoms decay on average every second.
2. Thus, a Cm-244 atom will form every 7x10^5 seconds on average.
3. ~800 or so Cm-244 atoms will form over the course of one Cm-244 half-life
4. Thus, there are Cm-244 atoms on Earth, making curium the heaviest natural element. 24.115.255.37 (talk) 02:37, 21 April 2024 (UTC)