ADOPTED LEVELS, GAMMAS for 21O

Author: R.B. Firestone |  Citation: Nucl. Data Sheets 127, 1 (2015) |  Cutoff date: 15-Jan-2015 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=8110 keV 12S(n)= 3806 keV 12S(p)= 20990 keV 60Q(α)= -15394 keV 21
Reference: 2012WA38

References:
  A  21N β- decay:83 MS  B  22N β-n decay:20 MS
  C  18O(18O,15O)  D  9Be(36S,X)
  E  2H(20O,p),(20O,pγ) 

General Comments:

Populated by 22N β-n decay (2003Yo02), T1/2=16.5 ms +85-48.









E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)Final Levels
     0.0ABCDE (5/2+) 3.42 s 10 
% β- = 100
    
  1220 3 ABCDE (1/2+)     1220 3 
  100
     0.0
(5/2+)
  2133 5   CDE     2133 5 
  100
     0.0
(5/2+)
  3026 6   CD  (7/2+)      883 4 
  3026 8 
   59 8 
  100 8 
  2133
     0.0

(5/2+)
  3073 10   CD  (7/2+)     3073 10 
  100
     0.0
(5/2+)
     4.77E3 10     E 3/2+       
  4927 12  BCD  (9/2+)       
     6.14E3 8 A   E (1/2-,3/2-)       
     6.80E3 10 A     (1/2-,3/2-)       
     6.91E3 7 A     (1/2-,3/2-)       
     9.02E3 12 A     (1/2-,3/2-)       
     9.04E3 22 A     (1/2-,3/2-)       

Jπ(level): For lower levels from shell model calculations (2004St08), although systematics of t=3/2 levels suggests that the 1218 and 2133 levels should have negative parity. For higher level assuming allowed β decay from Jπ=1/2-.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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