ADOPTED LEVELS for 246Fm

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) 


Q(β-)=-5.9×103 keV SYS(n)= 8.07×103 keV SYS(p)= 3.47×103 keV SYQ(α)= 8377 keV 9
Reference: 2012WA38

References:
  A  246Md ε decay:4.4 S  B  208Pb(40Ar,2n):1.54 S

General Comments:

Other reactions: 232Th(20Ne,6n), 232Th(22Ne,8N) E=130-150 MeV (1998Sa08).

Calculations, systematics:

α-decay. Theory: 2010Is01, 2010Ni09, 2010Wa23, 2009Ni06, 2009Sa25, 2009Sa45, 2008Do12, 2007Pe30, 2005Zh24, 2004Gm02, 2003Re32, 2002Re31, 2001Mo07, 2000Po25, 1993Bu09, 1991Bu05, 1987Po06, 1986Po18.

Deformation parameters: 1991Pa11

T1/2(SF), fission barrier. Theory: 2010Ad04, 2010Sa09, 2010Sv01, 2009Mo18, 2009St14, 2008Sa24, 2008Xu06, 2007Po01, 2006St04, 2005Xu01, 2004Ba17, 2004Bo34, 2004Ro01, 2003Po03, 2001Mo13, 1996Lo08, 1992Bh03.

Nuclear moments. Theory: 2010Vr01, 2006Wa30.

Nuclear Structure. Theory: 2006De23, 2002Pr01.

Activity produced by 208Pb(40Ar,2n) (1996Ni09,2011Ve03); 239Pu(12C,5n) (1967Nu01).

Q-value: Note: Current evaluation has used the following Q record

Q-value: Estimated ΔQ(β-)=292, ΔS(n)=195, ΔS(p)=201 (2011AuZZ,2003Au03).






E(level)
(keV)
XREFJπ(level) T1/2(level)
    0AB 0+ 1.54 s 4 
% α = 93.2 6
% SF = 6.8 6
% ε ≤ 1.3
  0+XA  % ECSF > 10

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    00+ 1.54 s 4 
% α = 93.2 6
% SF = 6.8 6
% ε ≤ 1.3
from 2011Ve03.
E(level): from 2011Ve03.
  0+X % ECSF > 10
Possible ε delayed SF decay from 246Md (4.4 s) (1996Ni09,2010An08).
E(level): Possible ε delayed SF decay from 246Md (4.4 s) (1996Ni09,2010An08).

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