ADOPTED LEVELS, GAMMAS for 240Cm
Authors: Balraj Singh, E. Browne | Citation: Nucl. Data Sheets 109, 2439 (2008) | Cutoff date: 31-Jul-2008
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-3.94×103 keV SY | S(n)= 7.49×103 keV 6 | S(p)= 4955.6 keV 24 | Q(α)= 6397.8 keV 6 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 240Bk ε decay (4.8 M) | B | 244Cf α decay (19.4 M) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) |
| 0 | AB | 0+ | 27 d 1 % SF = 3.9×10-6 8 % α > 99.5 % ε < 0.5 | ||
| 38 5 | B | (2+) | 132 ps 9 | 38 5 S | [E2] |
| ≈2000 | 10 ps 3 % SF ≤ 100 | ||||
| ≈3000 | 55 ns 12 % SF ≈ 100 |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 38 | (2+) | 132 ps 9 | 38 5 | [E2] | 2.4×103 | B(E2)(W.u.)=2.5×102 23, α=2.4E3 14, α(L)=1.7E3 10, α(M)=4.9E2 28, α(N)=1.4E2 8, α(O)=33 19, α(P)=5 3, α(Q)=0.010 9 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 0+ | 27 d 1 % SF = 3.9×10-6 8 % α > 99.5 % ε < 0.5 | %ε<0.5 since no 240Am detected (1952Hi11). |
2004Na01: Measured yields of fission fragments and deduced charge distribution.
Q-value: Note: Current evaluation has used the following Q record $ -3940 syst 7540 syst 4955.5 24 6397.8 6 2003Au03
Q-value: ΔQ(β-)=150, ΔS(n)=100 (syst,2003Au03)