ADOPTED LEVELS, GAMMAS for 23Al

Authors: M.S. Basunia, A. Chakraborty |  Citation: Nucl. Data Sheets 171, 1 (2021) |  Cutoff date: 1-Jun-2020 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-16950 keV SYS(n)= 19525 keV SYS(p)= 141.0 keV 5Q(α)= -8606 keV 11
Reference: 2017WA10

References:
  A  23Si ε decay  B  9Be(22Mg,23AlG)
  C  9Be(24Si,23Al)  D  9Be(25Al,23AlG)
  E  12C(23Al,23Al’)  F  22Mg(p,p):RES
  G  24Mg(7Li,8He)  H  12C(23Al,P22MG)

General Comments:

Other reactions:

1969Ce01: 28Si(p,6He), E=54.7~MeV - First observation of 23Al.

2002Ca04: 12C(23Al,X), E=35.9~MeV/nucleon - Proton halo. Also 2002Zh49.

2016Fa10: C(28Si,X), E=135~MeV/nucleon - Mechanism of two-proton emission from 23Al mainly sequential.

Q-value: ΔQ(β-)=500 (syst), ΔS(n)=400 (syst) (2017Wa10); Q(εp)=4640.6 4 (2017Wa10).

Q-value: S(2n)=36390 600 (syst), S(2p)=5645.2 4 (2017Wa10).







E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
      0.0ABCD FGH 5/2+ 446 ms 6 
% ε = 100
% εp = 1.04 3
 
    550 20       GH (1/2+) % p = 100
% IT = 8.6×10-7 17
 
   1475 39 A        (3/2)+ % p ≈ 100
 
   1619 6  B D     (7/2+) % p < 100
  1619 6 
   1773 35       G  % p ≈ 100
 
   2575 34       G  % p ≈ 100
 
   3000 20      F   (3/2+)    
   3140 30      F   (7/2+,5/2+)    
   3197 21 A     G  (3/2)+ % p ≈ 100
 
   3260 30      F   (7/2+,5/2+)    
   3709 24 A     G  (5/2)+ % p ≈ 100
 
   3950 30      F   (7/2+)    
   4156 47 A        (7/2)+ % p ≈ 100
 
   5134 59 A        % p ≈ 100
 
  11832 48 A        (5/2)+ % 2p ≈ 100
 
     12.7E3 23     E       

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
   1475(3/2)+ % p ≈ 100
Jπ(level): From systematics of 23Ne mirror states populated in 23F decay.
   1619(7/2+) % p < 100
Configuration=[22Mg(2+)#d5/2]7/2+.
   3000(3/2+)   Jπ(level): Proposed by 2007He30 (p,p):Res, based on R-matrix analysis (SAMMY-M6-β code) of measured differential cross sections.
   3140(7/2+,5/2+)   Jπ(level): Proposed by 2007He30 (p,p):Res, based on R-matrix analysis (SAMMY-M6-β code) of measured differential cross sections.
   3197(3/2)+ % p ≈ 100
Jπ(level): From systematics of 23Ne mirror states populated in 23F decay.
   3260(7/2+,5/2+)   Jπ(level): Proposed by 2007He30 (p,p):Res, based on R-matrix analysis (SAMMY-M6-β code) of measured differential cross sections.
   3709(5/2)+ % p ≈ 100
Jπ(level): From systematics of 23Ne mirror states populated in 23F decay.
   3950(7/2+)   Jπ(level): Proposed by 2007He30 (p,p):Res, based on R-matrix analysis (SAMMY-M6-β code) of measured differential cross sections.
   4156(7/2)+ % p ≈ 100
Jπ(level): From systematics of 23Ne mirror states populated in 23F decay.
  11832(5/2)+ % 2p ≈ 100
Jπ(level): From systematics of 23Ne mirror states populated in 23F decay.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   1619   1619E(γ): Average of 1616 6 (22Mg,23Alγ) and 1622 6 (25Al,23Alγ).

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