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-)=-3629 keV SYS(n)= 6051 keV SYS(p)= 3711 keV SYQ(α)= 9130 keV SY
Reference: 2012WA38

  A  263Sg α decay  B  238U(26Mg,5N)

General Comments:

Calculations, compilations:

α decay, Q values, Half-lives: 2010Do08, 2010Si27, 2009Do22, 2009Sa25, 2008Do12, 2008Ro06, 2007Zh41, 2006Pa12, 2006Xu04, 2005Re16, 2004Xu02, 2003Re32, 2002Gu24, 2001Mo07.

Favored α decay: 1993Bu09

g.s. properties: 1997Mo25, 1995Mo29

Single-particle Nilsson levels: 2005Pa28, 2005Pa73, 1994Cw02

Fission Barriers: 2000Du06

Spontaneous fission: 2000Ho27

Nuclear reactions:

136Xe(124Sn,n) E=289.5 MeV (2008Sm02,2001De23).

242Pu(22Ne,5n) (2000La34).

1994Cw02 calculate the following single-particle level sequence: g.s., 1/2[620]; 0.01 MeV, 3/2[622]; 0.05 MeV, 11/2[725]; 0.11 MeV, 7/2[613]; 0.40 MeV, 9/2[615]; 1.40 MeV, 7/2[624].

Assignment: 249Cf(13C,3n) excit, parent of 255No (1969Gh01,1971Gh03). 246Cm(18O,5n), SF followed (1973Dr10). 249Cf(13C,3n), measured SF/α (1981Be03). 248Cm(15N,4n) excit, 245Cm(18O,4n) (1985So03).

Q-value: Estimated ΔQ(β-)=90, ΔS(n)=79, ΔS(p)=125, ΔQ(α)=71 (2012Wa38)

XREF T1/2(level)
      0.0 B 2.4 s 4 
% α = 92 2
% SF = 8 2
  203+X 40 A   

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Additional Level Data and Comments:

      0.0+X   E(level): From 263Sg α decay.
  203+X   E(level): From 263Sg α decay.

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