ADOPTED LEVELS for 238Cm

Authors: E. Browne, J. K. Tuli |  Citation: Nucl. Data Sheets 127, 191 (2015) |  Cutoff date: 1-Jun-2014 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-4.77×103 keV SYS(n)= 7874 keV 72S(p)= 4415 keV SYQ(α)= 6670 keV 10
Reference: 2012WA38

General Comments:

Assignment: 239Pu(α,5n) chem, p 234Pu (6.1-MeV a) 1952Hi63.

2006As03: Produced in 237Np(6Li,5n), E=41-48 MeV at isol facility, measured a(t). Others (same authors): 2003Na10, 2002As08, 2002AsZX

Delayed fission after ε+β+ decay of 238Bk was observed by 1994Kr03 and 1994La25, but energy level of shape isomer is unknown.

Others:

Discovery of 238Cm: 2013Fr02.

Nuclear Reactions: 208Pb(30Si,X) 238Cm (2013Du17).

Alpha decay, calculated T1/2: 2013Ra05, 2013Se17, 2013Wi05, 2013Zd01, 2012Co10, 2012Is08, 2012Po01, 2012Pr09, 2011Zh36, 2010Is01, 2009Ni06, 2009Qi07, 2008Ro06, 2001Mo07.

Calculated Q(α): 2010Wa23

Cluster decay: 238Cm(38Si): 2012Ba25; 238Cm(30Si): 2012Ku29; 238Cm(34Si): 2012Sa31, 2011Sh13,

Fission: 2009Mo18.

Q-value: Db-=255 syst, ΔS(p)=61 syst (2012Wa38)





E(level)
(keV)
Jπ(level) T1/2(level)
   0.0 0+ 2.2 h 4 
% ε = 96.16 18
% α = 3.84 18
% SF = 0.048 2
  35 7  2+  

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   0.00+ 2.2 h 4 
% ε = 96.16 18
% α = 3.84 18
% SF = 0.048 2
Systematics of radius parameter r0 suggests that α branching is about 4%. Large uncertainties on measured E(α) and T1/2 give an upper limit of 10% for the α branching.
E(level): Systematics of radius parameter r0 suggests that α branching is about 4%. Large uncertainties on measured E(α) and T1/2 give an upper limit of 10% for the α branching.

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