ADOPTED LEVELS, GAMMAS for 49K

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 28-FEB-2011 

Author: T. W. Burrows |  Citation: Nucl. Data Sheets 109, 1879 (2008) |  Cutoff date: 14-Jul-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=11688.4 keV 9S(n)= 5398.3 keV 12S(p)= 1.45×104 keV SYQ(α)= -1.368×104 keV 10
Reference: 2012WA38

References:
  A  50Ar β-n decay (85 MS)  B  238U(48Ca,xγ)

General Comments:

Z=19, n=30, neutron rich nucleus, near major shells Z=20 and n=28, shell model calculations. Test of multi-nucleon transfer reaction to study neutron rich nuclei.

Identification of 49K in 238U(p,F) (1972Kl04,1972RiZJ)

1983RaZR, 1982Ca04: U(p,X)E=600 MeV. Measured β’s (scin), γ’s, β(t) and γ(t), n’s (long counter), and βn and γn. The thesis of 1983RaZR is apparently a more complete report of the work presented by 1982Ca04.

2009No01: calculated levels, J, π, shell model in large space

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

Q-value: Estimated ΔSP=306 keV (2009AuZZ,2003Au03)

Q-value: Q(β-n)=5.820 MeV 70, S(2n)=10770 70, S(2p)=34380 600 (syst) (2009AuZZ,2003Au03)









E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)Final Levels
     0.0AB (1/2+,3/2+) 1.26 s 5 
% β- = 100
% β-n = 86 9
    
    91.7 3  B (1/2+,3/2+) 8 ns 5      91.7 3 
  100
     0.0
(1/2+,3/2+)
   862.8 3  B (5/2+) 2.2 ps 4     771.1 2 
   862.6 8 
  100
    7 7 
    91.7
     0.0
(1/2+,3/2+)
(1/2+,3/2+)
  1102.9 8 ? B (5/2+)     1011.2 8 
  100
    91.7
(1/2+,3/2+)
  1438.3 4  B (7/2+) > 0.35 ps    575.5 2 
  100
   862.8
(5/2+)
  2104.2 5  B (7/2-) > 0.35 ps   1241.4 4 
  100
   862.8
(5/2+)

Jπ(level): From shell-model predictions (2010Br14)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(1/2+,3/2+) 1.26 s 5 
% β- = 100
% β-n = 86 9
$ πd3/2-1 or πs1/2-1 state.
    91.7(1/2+,3/2+) 8 ns 5  $ πd3/2-1 or πs1/2-1 state.
  1102.9(5/2+)   Placement of 1011γ is either to 92-keV level as shown in figure 3 of 2010Br14 or to the g.s.
E(level): Placement of 1011γ is either to 92-keV level as shown in figure 3 of 2010Br14 or to the g.s.
  2104.2(7/2-) > 0.35 ps πf7/2 state.

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Additional Gamma Comments:

E(level)E(gamma)Comments

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