ADOPTED LEVELS for 208Ac
Author: M. J. Martin | Citation: Nucl. Data Sheets 108,1583 (2007) | Cutoff date: 1-Jun-2007
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-5.91×103 keV 7 | S(n)= 8.46×103 keV 8 | S(p)= 7.E1 keV 8 | Q(α)= 7.73×103 keV 5 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 212Pa α decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0 | A | (3+) | 95 ms +24-16 % α ≈ 99 % ε ≈ 1 |
| 506 26 | A | (10-) | 25 ms +9-5 % α ≈ 90 % ε ≈ 10 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (3+) | 95 ms +24-16 % α ≈ 99 % ε ≈ 1 | %ε:from gross β calculations of 1973Ta30. |
| 506 | (10-) | 25 ms +9-5 % α ≈ 90 % ε ≈ 10 | %ε, %α: gross β calculations of 1973Ta30 give %ε≈1. From an analogy to the E3 decay in 204At, any isomeric decay to the expected 7+ state (see 1994Sc24 and 1992Hu04)is expected to Be<10%. |
Assignment: 175Lu(40Ar,7N), E=5.2-5.6 MeV/nucleon. p 204Fr 7031α for 95-ms state, and p 204Fr 7013α for the 25-ms state (1994Le05)
Q-value: Note: Current evaluation has used the following Q record -5700 ≈ 8440 80 70 80 7730 50 2003Au03