ADOPTED LEVELS, GAMMAS for 28Mg

Author: M. Shamsuzzoha Basunia |  Citation: Nucl. Data Sheets 114, 1189 (2013) |  Cutoff date: 1-Apr-2013 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=1831.8 keV 20S(n)= 8503.4 keV 20S(p)= 16790 keV 4Q(α)= -11492.0 keV 21
Reference: 2012WA38

References:
  A  28Na β- decay  B  29Na β-n decay
  C  26Mg(t,pγ)  D  Coulomb Excitation
  E  150Nd(26Mg,28Mg) 

General Comments:

28Mg production cross sections are reported in:

2012Zh06: 9Be(40Ar,X), E=57 MeV/nucleon

2011Ti03: natCr(p,X), E=248 to 2605 MeV; 56Fe(p,X), E=249 to 2605 MeV

2011Ti04: natNi(p,X), E=599 to 2605 MeV 93Nb(p,X), E=1599- and 2605 MeV

2011Ti05: natW(p,X), E=1199-, 1599-, 2605-MeV natTa(p,X), E=1199-, 1598-, 2605-MeV

2008Ti05: 56Fe(p,X), E=300 to 2600 MeV

2007No13: 9Be(40Ar,X), E=90A MeV, and 181Ta(40Ar,X), E=94A MeV

2003Ya20: Cu(40Ar,X), Cu(20Ne,X), E=100 and 230 MeV/nucleon

2000Da06: 124Sn(p,X), E=8.1 GeV

2000Ka25: 232Th(γ,F)28Mg, E=12-, 16.5-, 24-MeV bremsstrahlung. Other: 2000Ma75

1997Fo01: 208Pb(37Cl,X), E=230 MeV

1997Vo03: 56Fe(p,X), E=800 MeV

2006Kh08: 28Mg beam, 55.93 MeV/nucleon, bombarded a Si target, measured σ=2069 mb 186 for Si(28Ne,X) reaction and a square reduced absorption radius r02=1.11 fm2 10 is deduced and used to study the isospin dependence.










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0ABCDE 0+ 20.915 h 9 
% β- = 100
     
  1473.54 10 ABCDE 2+ 1.2 ps 1    1473.5 1 
  100
E2
     0.0
0+
  3862.15 14 ABC   0+ 0.55 ps 7    2388.5 1 
  100
E2
  1473.54
2+
  4021.0 5 A C E 4+ 105 fs 35    2547.7 6 
  100
(E2)
  1473.54
2+
  4554.6 5 ABC   2+ < 0.03 ps    533.6
   692.4
  3082.6 13 
  4553.8
   <2
   <2
  100
   <3


M1+E2

  4021.0
  3862.15
  1473.54
     0.0
4+
0+
2+
0+
  4561.0 5 ABC   1+     3087.3 5 
  100

  1473.54
2+
  4878.6 13 A C   2+ < 0.08 ps    324
   857.6
  1016.4
  3404.9 13 
  4877 10 
   <2.5
   <2.5
   <4
  100 4 
   25 4 



M1+E2
E2
  4554.6
  4021.0
  3862.15
  1473.54
     0.0
2+
4+
0+
2+
0+
  5171.3 4 A C E 3- 0.11 ps 9     292.7
   616.7
  1150.5 4 
  3696.8 6 
   <1
    3 1 
   38 2 
  100 2 


(E1)
(E1)
  4878.6
  4554.6
  4021.0
  1473.54
2+
2+
4+
2+
  5184.6 7   C          
  5193.1 5 A C   1 < 0.02 ps    314.5
   638.5
  1330.9
  3719
  5192.6 5 
   <1
   <1.1
    2.9 6 
   11.4 11 
  100.0 11 





  4878.6
  4554.6
  3862.15
  1473.54
     0.0
2+
2+
0+
2+
0+
  5270.2 4 A C   1+ < 0.1 ps   5269.6 4 
  100

     0.0
0+
  5470.1 5 A C   2     3996.3 5 
  5469
  100.0
   <2


  1473.54
     0.0
2+
0+
  5672.7 5   C   2+     1118
  1651.6
  1810.4
  4198.5
  5671.5
   21 5 
   <7.3
   <5.9
  100 6 
   26 6 



M1(+E2)
E2
  4554.6
  4021.0
  3862.15
  1473.54
     0.0
2+
4+
0+
2+
0+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  5702.1 7   C   0+ 0.21 ps 3     431.9
  1141
  4227.9
   17.5 15 
  100.0 19 
   28.5 16 


[E2]
  5270.2
  4561.0
  1473.54
1+
1+
2+
  5916.9 11 A C   (0,1,2)+     4443.0 11 
  100

  1473.54
2+
  6135 15   C          
  6416 15   C          
  6516 15   C          
  6544.9 5 A C   (2+)     1373.4 2 
  1990.7 5 
  <50
  100 50 


  5171.3
  4554.6
3-
2+
  6599 15   C          
  6708 15   C          
  6759 15   C          
  7200.9 7 A     (0,1,2)+     2007.7 4 
  100

  5193.1
1
  7462.0 4 A     (2+)     2191.7 3 
  2290.9 6 
  2906.9 6 
  100 13 
  <13
   75 13 



  5270.2
  5171.3
  4554.6
1+
3-
2+
  8439.4 11 ?    E (6+)     4418?
 

  4021.0
4+

E(level): From a least-squares fit to measured γ-ray energies. ΔE=1 keV is assumed for 4418γ and used in the fitting. Calculated γ-ray energies are obtained after the fitting.

Jπ(level): From L values in 26Mg(t,pγ), except otherwise noted

T1/2(level): From 26Mg(t,pγ), except otherwise noted.

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Additional Data
  1473.54 2+ 1.2 ps 1    1473.5 1 E2 B(E2)(W.u.)=13.4 12
  3862.15 0+ 0.55 ps 7    2388.5 1 E2 B(E2)(W.u.)=2.6 4
  4021.0 4+ 105 fs 35    2547.7 6 (E2) B(E2)(W.u.)=10 4
  4554.6 2+ < 0.03 ps   3082.6 13 M1+E2+0.04 3B(M1)(W.u.)>0.024
  4878.6 2+ < 0.08 ps   3404.9 13 M1+E2+0.35 6B(E2)(W.u.)>0.18, B(M1)(W.u.)>0.0046
2+ < 0.08 ps   4877 10 E2 B(E2)(W.u.)>0.097
  5171.3 3- 0.11 ps 9    1150.5 4 (E1) B(E1)(W.u.)=0.0012 10
3- 0.11 ps 9    3696.8 6 (E1) B(E1)(W.u.)=9.E-5 8
  5672.7 2+     4198.5M1(+E2)+0.3 +2-6 
  5702.1 0+ 0.21 ps 3    4227.9[E2] B(E2)(W.u.)=0.077 12

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 20.915 h 9 
% β- = 100
Charge radius <r2>1/2=3.0695 fm 14 (statistical) 51 (systematic) (2012Yo01).
E(level): Charge radius <r2>1/2=3.0695 fm 14 (statistical) 51 (systematic) (2012Yo01).
  5916.9(0,1,2)+   Jπ(level): From 28Na β- decay, based on the angular distribution measurements of β and γ-ray emissions.
  6544.9(2+)   Jπ(level): From 28Na β- decay, based on the angular distribution measurements of β and γ-ray emissions.
  7200.9(0,1,2)+   Jπ(level): From 28Na β- decay, based on the angular distribution measurements of β and γ-ray emissions.
  7462.0(2+)   Jπ(level): From 28Na β- decay, based on the angular distribution measurements of β and γ-ray emissions.

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1473.54  1473.5E(γ): From 28Na β- decay
  3862.15  2388.5E(γ): Weighted average of data from 2012Ku11, 1984Gu19 (28Na β- decay), 29Na β-n decay and 26Mg(t,pγ).
  4021.0  2547.7E(γ): Weighted average of data from 2012Ku11 (28Na β- decay) and 26Mg(t,pγ)
  4554.6  3082.6E(γ): Using the Limitation of Relative Statistical Weight (LWM) averaging method of data 3081.3 keV 3 (2012Ku11), 3087.4 keV 9 (1984Gu19) of 28Na β- decay, 3083.4 keV 7 (t,pγ), and 3080.9 keV 10 (29Na β-n decay).
  4561.0  3087.3E(γ): Weighted average of data from 2012Ku11, 1984Gu19 in 28Na β- decay and 29Na β-n decay.
  4878.6  3404.9E(γ): From 28Na β- decay
  5171.3  1150.5E(γ): Weighted average of 1150.3 keV 4 (t,pγ) and 1151.6 keV 11 (2012Ku11 - 28Na β- decay)
  3696.8E(γ): Weighted average of 3697.5 keV 7 (t,pγ) and 3694.2 keV 13 (2012Ku11 - 28Na β- decay)
  5193.1  5192.6E(γ): From 28Na β- decay
  5270.2  5269.6E(γ): From 28Na β- decay
  5470.1  3996.3E(γ): Weighted average of 3996.5 keV 5 (t,pγ) and 3994.9 keV 15 (2012Ku11 - 28Na β- decay)
  5916.9  4443.0E(γ): From 28Na β- decay
  6544.9  1373.4E(γ): From 28Na β- decay
  1990.7E(γ): From 28Na β- decay
  7200.9  2007.7E(γ): From 28Na β- decay
  7462.0  2191.7E(γ): From 28Na β- decay
  2290.9E(γ): From 28Na β- decay
  2906.9E(γ): From 28Na β- decay

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