ADOPTED LEVELS for 259Db
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 114, 1041 (2013) | Cutoff date: 1-Aug-2011
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-4568 keV SY | S(n)= 7879 keV SY | S(p)= 1640 keV SY | Q(α)= 9619 keV 50 | ||
| Reference: 2012WA38 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | [9/2+] | 0.51 s 16 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | [9/2+] | 0.51 s 16 | Alpha decay: Eα=9470 (Q(α)=9619) keV (2001Ga20,2002Gu33). Calculated values: Q(α)=9655 KeV, T1/2=0.0903 s (2009Do22,2008Do12). Other calculations: 2008Ro06, 2007Zh41. E(level): Alpha decay: Eα=9470 (Q(α)=9619) keV (2001Ga20,2002Gu33). Calculated values: Q(α)=9655 KeV, T1/2=0.0903 s (2009Do22,2008Do12). Other calculations: 2008Ro06, 2007Zh41. |
259Db activity was produced by the 241Am(22Ne,4n) reaction at E=118 MeV. The identification of 259Db is based on its genetic relationship with the known 255Lr(31 s), and it has been established by an alpha-recoiled milking measurement (2001Ga20,2002Gu33). The deduced Q(α) of 259Db from Eα=9.47 MeV (Q(α)=9.62 MeV) is in excellent agreement with theoretical predictions of Q(α)=9.60 MeV (1985Wa03), and Q(α)=9.61 MeV (1997Mo25).
Calculations (Theory):
Ground state properties: 1997Mo25, 1995Mo29
Single-particle Nilsson levels: 1994Cw02
Alpha-particle energy, half-life: 2009Do22, 2008Ro06, 2008Do12, 2007Zh41.
Spontaneous Fission: 2004Pe05.
Others: 2007Og05, 2009Og07.
1994Cw02 have calculated the following single-particle level sequence: g.s.,9/2[624]; 0.26 MeV, 7/2[514]; 0.29 MeV, 5/2[512]; 0.41 MeV, 1/2[521].
Q-value: Estimated ΔQ(β-)=128, ΔS(n)=310, ΔS(p)=62 (2012Wa38)