ADOPTED LEVELS, GAMMAS for 32Mg

Authors: Christian Ouellet, Balraj Singh |  Citation: Nucl. Data Sheets 112, 2199 (2011) |  Cutoff date: 24-Aug-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=10270 keV 13S(n)= 5778 keV 5S(p)= 20379 keV 24Q(α)= -1.455×104 keV 10
Reference: 2012WA38

References:
  A  32Na β- decay (13.2 MS)  B  33Na β-n decay (8.0 MS)
  C  34Na β-2n decay (5.5 MS)  D  1H(32Mg,32Mg’γ)
  E  3H(30Mg,p)  F  4He(32Mg,32Mg’γ)
  G  9Be(36S,xγ),(48Ca,xγ)  H  Coulomb Excitation

General Comments:

This nuclide is central and of prime relevance in the ’island of inversion’ at or near n=20 semi-closed shell.

1979Sy01: first identification of 32Mg in 12C(40Ar,X) reaction at 205 MeV/nucleon, deduced evidence for particle stability

1983De04, 1984Gu19: identification and mass excess measurement in Ir(p,X) E=10 GeV

1984La03: first study of decay characteristics and half-life measurement

2004Gr08: 32Mg formed in fragmentation of 36S beam with 9Be target at GANIL facility using LISE3 spectrometer. Measured isotopic half-life and delayed-neutron probability

2011Ka01: E=900 MeV/nucleon secondary 32Mg beam from Be(48Ca,X) reaction. Target=CH2. Fragment separator at GSI facility. Measured interaction cross sections by detecting unreacted Mg particles by Bρ-ΔE-tof method. Deduced matter radius by Glauber model analysis. Comparison with HF and RMF predictions. Interaction σ=1331 mb 24 for Carbon and 523 mb 47 for Hydrogen

Mass measurements: 2006Ga04 (also 2006Lu09), 2001Lu20, 1991Zh24, 1991Or01, 1987Gi05, 1986Vi09

RMS radii: 1998Su07 (also 1997Su04), 2006Kh08, 2011Ka01

Yield and cross sections: 2001Pe14, 1997Ta22

Selected references for structure calculations (levels, B(E2), etc.): 2011Ya01, 2009Ya04, 2009Yo05, 2008Ya14, 2006Zh19, 2005Ro10, 2004Ka21, 2004Kh16, 2004Ot02, 2003Ki19, 2001Ca49, 2001Ut02, 2000Ro27, 1999De07, 1999Si13, 1994Po05, 1992Fu07, 1987Po01, 1980Wi18, 1978Ba49

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

Q-value: Q(β-n)=5972 27, S(2n)=8162 22, S(2p)=38530 280 (2011AuZZ)

Q-value: Values in 2003Au03: Q(β-)=10110 90, S(n)=5809 21, S(p)=20900 210, Q(α)=-14620 150, Q(β-n)=5928 27, S(2n)=8187 20, S(2p)=38630 570










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0ABCDEFGH 0+ 86 ms 5 
% β- = 100
% β-n = 5.5 5
     
   885.3 1 ABCDEFGH 2+ 11.4 ps 20     885.3 1 
  100
(E2)
     0
0+
  1058 2     E    0+ > 7 ns    172
  1058S
  100
 
[E2]
[E0]
   885.3
     0
2+
0+
  2322.3 3 AB D FGH 4+     1436.8 4 
  100

   885.3
2+
  2551 1 AB D     (1,2+)     1665.6 5 
  2550.7 5 
   38 6 
  100 9 


   885.3
     0
2+
0+
  2858.2 5 AB D  G  (1-,3-)     1972.9 5 
  100

   885.3
2+
  3037.7 2 AB       (2-,3-)      486.1 5 
  2152.4 2 
    2.8 6 
  100 4 


  2551
   885.3
(1,2+)
2+
  3117 16    D     (3-,4+)     2230 14 
  100

   885.3
2+
  3490 17    D     (1-,2+)     2603 16 
  100

   885.3
2+
  3552.3 7 A  D          693.5 5 
  1231.7 5 
 
 


  2858.2
  2322.3
(1-,3-)
4+
  4215 17    D     (3-,4+)     1895 13 
  100

  2322.3
4+
  4784.0 8 A            1231.7 5 
  100

  3552.3

  4819.5 12 A        (2-,3-)     1782.7 9 
  2268.5 5 
  3934.5 5 
   75 17 
   21 3 
  100 7 



  3037.7
  2551
   885.3
(2-,3-)
(1,2+)
2+
  5169 24    D     (2+,3-)     4282 23 
  100

   885.3
2+
  5203 19    D     (2+,3-)     2883 16 
  100

  2322.3
4+

E(level): From least-squares fit to Eγ data

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Additional Gamma Data:











E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityAdditional Data
   885.3 2+ 11.4 ps 20     885.3 1 (E2)B(E2)(W.u.)=15 3

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     00+ 86 ms 5 
% β- = 100
% β-n = 5.5 5
Mean square radius=1.196 fm2 11 (2006Kh08 in Si(32Mg,X) reaction at E=49.04 and 42.81 MeV/nucleon, also measured energy-integrated cross sections.
E(level): Mean square radius=1.196 fm2 11 (2006Kh08 in Si(32Mg,X) reaction at E=49.04 and 42.81 MeV/nucleon, also measured energy-integrated cross sections.
   885.32+ 11.4 ps 20  B(E2)=0.047 8, β2=0.43 3 (2009Ta08)
T1/2=16 ps 4 from βγγ(t) in 32Na decay, preliminary value.
  2322.34+   XREF: H(?).
Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08).
  2858.2(1-,3-)   XREF: γ(?).
Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08).
  3117(3-,4+)   Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08).
  3490(1-,2+)   Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08).
  4215(3-,4+)   Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08).
  5169(2+,3-)   Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08).
  5203(2+,3-)   Jπ(level): L(p,p’) transfer in inverse kinematics 1H(32Mg,32Mg’) reaction (2009Ta08).

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Additional Gamma Comments:

E(level)E(gamma)Comments
  3552.3   693.5I(γ): due to contamination, intensity is not established
  1231.7E(γ): Multiply placed
  4784.0  1231.7E(γ): Multiply placed

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