ADOPTED LEVELS for 19Mg

Authors: J.H. Kelley, G.C. Sheu |  Citation: ENSDF |  Cutoff date: 1-Jan-2014 

 Full ENSDF file | Adopted Levels (PDF version) 


S(n)= 18.68×103 keV 11S(p)= 0.50×103 keV 12
Reference: 2012WA38

References:
  A  9Be(36Ar,19Mg)  B  9Be(20Mg,2P17NE)

General Comments:

19Mg decays by 2p emission; while the ground state appears to decay by "true 2p emission " the excited states decay sequentially via states in 18Na. Theoretical analysis of the systematics for 2p emission in nuclear decay using the T- and Y- Jacobi coordinate systems is given in (2000Gr16,2001Gr16,2001Gr29,2003Gr24,2010Gr06). See also (2003Gr01,2003Gr04) and (2013Ol02).

Rigorous shell-model predictions are presented for the 19Mg ground state (2010Fo07,2011Fo05,2012Fo10,2012Fo05) and excited state (2013Fo05) structures.






E(level)
(keV)
XREFJπ(level) T1/2(level)
  0 B 1/2- 1.14×10-4 eV
% 2p ≈ 100
  1.38E3 24  B (3/2-) 0.4 MeV 2 
% p ≈ 100
  2.14E3 21  B (5/2-) 0.6 MeV 6 
% p ≈ 100
  2.84E3 21  B (3/2-) < 0.2 MeV
% p ≈ 100
  4.74E3 21  B (3/2-) 2.0 MeV 8 
% p ≈ 100

T1/2(level): LABEL=Γ

Back to top

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  01/2- 1.14×10-4 eV
% 2p ≈ 100
Decays to 17Ne+2p.
E(level): Decays to 17Ne+2p.
  1.38E3(3/2-) 0.4 MeV 2 
% p ≈ 100
Decays to 18Na*(0,320).
E(level): Decays to 18Na*(0,320).
  2.14E3(5/2-) 0.6 MeV 6 
% p ≈ 100
Decays to 18Na*(320,854).
E(level): Decays to 18Na*(320,854).
  2.84E3(3/2-) < 0.2 MeV
% p ≈ 100
Decays to states in 18Na.
E(level): Decays to states in 18Na.
  4.74E3(3/2-) 2.0 MeV 8 
% p ≈ 100
Decays to 18Na*(320).

Back to top