ADOPTED LEVELS for 246Md
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 112, 1833 (2011) | Cutoff date: 1-Jan-2011
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 7.2×103 keV SY | S(p)= 1.4×103 keV SY | Q(α)= 8.89×103 keV 4 | |||
| Reference: 2012WA38 |
| E(level) (keV) | T1/2(level) |
| 0+X | 0.9 s 2 % α = 100 % ε = ? % SF = ? |
| 0+Y | 4.4 s 8 % ε > 77 % α < 23 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0+X | 0.9 s 2 % α = 100 % ε = ? % SF = ? | Spontaneous fission (SF) was observed decaying with T1/2=1.0 s +10-3. Part of this decay has been assigned to electron-capture delayed spontaneous fission (ε-SF) (2010An08). E(level): Spontaneous fission (SF) was observed decaying with T1/2=1.0 s +10-3. Part of this decay has been assigned to electron-capture delayed spontaneous fission (ε-SF) (2010An08). | |
| 0+Y | 4.4 s 8 % ε > 77 % α < 23 | Activity produced by 209Bi(40Ar,3n), E=198 MeV. Measured emitted α particles, γ rays of 252- and 279 keV (possibly E1 or E2) in coincidence with α particles; Eα=8178 keV 10 (%Iα<23) (2010An08). E(level): Activity produced by 209Bi(40Ar,3n), E=198 MeV. Measured emitted α particles, γ rays of 252- and 279 keV (possibly E1 or E2) in coincidence with α particles; Eα=8178 keV 10 (%Iα<23) (2010An08). |
Production, assignment: 209Bi(40Ar,3n) at E=4.78, 4.93, 5.12 MeV/α. Observed sequence of two previously unknown α decays; at E=4.93 MeV/α the 3n-deexcitation channel is expected; products of reaction channels involving emission of charged particles (pxn) and (α xn) do not show the observed decay properties (1996Ni09)
Activity produced by 209Bi(40Ar,3n), E=198 MeV. Measured emitted α particles, γ rays of 169.0-, 232.5-, and 396.4 keV in coincidence with α particles with Eα=8380-8640 keV. Also observed α particles with Eα=8744 keV 10 with T1/2=0.75 s 18 (2010An08, 2006An13).
Q-value: Note: Current evaluation has used the following Q record -6136 SY7136 syst 1293 syst 8888 40 2011AuZZ,2003Au03
Q-value: Estimated: ΔQ(β-)=332, ΔS(n)=461, ΔS(p)=429 (2011AuZZ)