ADOPTED LEVELS, GAMMAS for 32Si

Author: Jun Chen |  Citation: Nucl. Data Sheets 201, 1 (2025) |  Cutoff date: 31-Oct-2024 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=227.2 keV 3S(n)= 9200.0 keV 3S(p)= 16416.0 keV 23Q(α)= -11482.7 keV 4
Reference: 2021WA16

References:
  A  32Al β- decay (32.3 MS)  B  33Al β-n decay (41.5 MS)
  C  12C(22Ne,2pγ)  D  30Si(t,p)
  E  30Si(t,pγ)  F  31Si(n,γ) E=TH
  G  208Pb(37Cl,xγ)  H  Coulomb Excitation

General Comments:

Mass measurements: 2009Kw02, 2003Bl17, 2001Pa52, 1997Ro26

Mass deduced from IMME analysis: 2021Ka45, 2010Ka30, 2006Tr03

Strong absorption radius measurement: 1999Ai02

32Si activity standardization measurements: 2023Ko25, 2023Ne09

Structure calculations:

2022Da11,2022Lu03,2020Fo04,2017Ro08,2017Ts01,2015Pu01,2009Bo16: calculated levels, J, π, B(E2)

2021In02,2021Ku13: calculated deformation parameter

Q-value: S(2n)=15787.36 30, S(2p)=29774.3 13 (2021Wa16)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
      0.0ABCDEFGH 0+ 157 y 7 
% β- = 100
     
   1941.7 3 ABCDE GH 2+ 0.57 ps 9    1941.8 4 
  100
E2
      0.0
0+
   4231.0 4 A  DE    2+ 0.26 ps 9    2289.4 8 
  4230.0 15 
   63 7 
  100 7 
M1+E2
(E2)
   1941.7
      0.0
2+
0+
   4984.2 11 A  DE    0+ ≤ 0.30 ps   3042.3 10 
  100
[E2]
   1941.7
2+
   5219.9 11   CDE    (1+) < 80 fs   3278
  100
[M1,E2]
   1941.7
2+
   5289.0 5   CDE    3- 137 fs 28    1057.9
  3347.1
   12 5 
  100 5 
(E1(+M2))
(E1+M2)
   4231.0
   1941.7
2+
2+
   5412.5 4     E    1(-) < 49 fs   1181.5
  3470.6
  5411.9
   11 4 
  100 4 
   12.4 25 
[E1]
(E1(+M2))
(E1)
   4231.0
   1941.7
      0.0
2+
2+
0+
   5427 14    D     2+        
   5504.81 34   CDE G  5- 32.5 ns 4    3562.84 14 
  100
E3
   1941.7
2+
   5583.8 11 ?      G  (5-) 27 ns 2      79 1 ?
  100

   5504.81
5-
   5772.2 5   C E    (3-) 28 fs 21    3831
  100
(E1+M2)
   1941.7
2+
   5786.0 15 A  DE    (0,1,2)+ ≥ 0.83 ps   3844.0 15 
  100

   1941.7
2+
   5880.9 14   C      4+ 12.5 fs 56    3938.9 13 
 
E2
   1941.7
2+
   5893 8    D     (3+)        
   5953.8 7     E    2+ ≤ 55 fs   4012
  5953
  100 4 
   35 4 
(M1(+E2))
E2
   1941.7
      0.0
2+
0+
   5967 4    D     3-        
   6171.0 11    DE    (2+) ≤ 55 fs   4229
 

   1941.7
2+
   6195.8 7    DE    1- ≤ 38 fs   4254
  6195
  100 9 
   56 9 
[E1]
(E1)
   1941.7
      0.0
2+
0+
   6243.1 11    DE    0+ ≤ 55 fs   4301
  100
[E2]
   1941.7
2+
   6347.0 5   C      (4-) 0.68 ps 10     574.9 3 
   842.1 3 
 
 


   5772.2
   5504.81
(3-)
5-
   6392.1 8    DE    2+ < 42 fs   2161
  4450
    6.4 11 
  100.0 11 
[M1,E2]
(M1(+E2))
   4231.0
   1941.7
2+
2+
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   6477 6    D     3-        
   6705.3 6    DE    1-     2474
  4763
  6705
   22 5 
    9 7 
  100 7 


D
   4231.0
   1941.7
      0.0
2+
2+
0+
   6860 5    D     3-        
   7083 5    D     2+        
   7482 9    D            
   7743 6    D            
   7793 9    D     3-,4+        
   7887 18    D            
   7978 14    D     3-        
   8066 9    D     2+        
   8321 8    D     5-        
   8361 10    D     2+        
   8422 10    D            
   8567 8    D     3-        
   8650 15    D     2+        
   8758 9    D     3-,4+        
   8842 13    D            
   8877 8    D            
   8971 9    D            
   9003 7    D            
   9192 12    D            
   9203.218 5 S     F   1+,2+     9201.798 5 
 

      0.0
0+
   9543 6    D            
   9701 6    D            
   9782 12    D            
   9934 29    D            
   9975 25    D            
  10052 5    D            
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  10237 5    D            
  10279 6    D            
  10317 5    D            
  10461 9    D            
  10603 15    D            
  10664 14    D            
  10725 9    D            
  10778 13    D            
  10846 13    D            
  10888 12    D            
  10971 9    D            
  11398 7    D            
  11454 8    D            

E(level): From Eγ data for levels connected with γ transitions and from (t,p) for others, unless otherwise noted. Where there are no ΔEγ, level energies are taken from (t,pγ) where quoted values of E(level) are deduced based on measured γ-ray energies which however are not explicitly listed in the references of (t,pγ).

T1/2(level): From DSAM in (t,pγ) for excited levels, unless otherwise stated.

E(γ): Values with uncertainties are from 32Al β- decay and others from level-energy differences in (t,pγ), unless otherwise noted

I(γ): From (t,pγ), unless otherwise stated

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Additional Gamma Data:















E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Conversion
Coefficient		Additional Data
   1941.7 2+ 0.57 ps 9    1941.8 4 E2 0.000293B(E2)(W.u.)=6.0 +11-8, α=0.000293 4, α(K)=7.28E-6 10, α(L)=5.19E-7 7, α(M)=3.42E-8 5
   4231.0 2+ 0.26 ps 9    2289.4 8 M1+E2-0.84 440.000408B(E2)(W.u.)=0.9 +7-6, B(M1)(W.u.)=0.0016 +12-7, α=0.000408 26, α(K)=5.16E-6 14, α(L)=3.68E-7 10, α(M)=2.43E-8 7
2+ 0.26 ps 9    4230.0 15 (E2) 1.25×10-3B(E2)(W.u.)=0.16 +9-4, α=1.25E-3 2, α(K)=2.083E-6 29, α(L)=1.486E-7 21, α(M)=9.79E-9 14
   4984.2 0+ ≤ 0.30 ps   3042.3 10 [E2] 0.000807B(E2)(W.u.)≥1.2, α=0.000807 11, α(K)=3.40E-6 5, α(L)=2.427E-7 34, α(M)=1.600E-8 22
   5219.9 (1+) < 80 fs   3278[M1,E2] 0.00084α=0.00084 7, α(K)=2.96×10-6 8, α(L)=2.11E-7 6, α(M)=1.39E-8 4
   5289.0 3- 137 fs 28    1057.9(E1(+M2))0.0 2B(E1)(W.u.)=0.00044 19
3- 137 fs 28    3347.1(E1+M2)-0.06 41.41×10-3B(E1)(W.u.)=1.16E-4 +30-21, B(M2)(W.u.)=0.17 +32-15, α=1.41E-3 2, α(K)=2.110E-6 32, α(L)=1.505E-7 23, α(M)=9.91E-9 15
   5412.5 1(-) < 49 fs   1181.5[E1] 5.70×10-5B(E1)(W.u.)>4.6E-4, α=5.70E-5 8, α(K)=9.69E-6 14, α(L)=6.92E-7 10, α(M)=4.56E-8 6
1(-) < 49 fs   3470.6(E1(+M2))+0.13 330.00145B(E1)(W.u.)>2.1E-4, α=0.00145 14, α(K)=2.04E-6 26, α(L)=1.45E-7 19, α(M)=9.6E-9 12
1(-) < 49 fs   5411.9(E1) 2.15×10-3B(E1)(W.u.)>6.6E-6, α=2.15E-3 3, α(K)=1.188E-6 17, α(L)=8.47E-8 12, α(M)=5.58E-9 8
   5504.81 5- 32.5 ns 4    3562.84 14 E3 0.000747B(E3)(W.u.)=0.0843 11, α=0.000747 10, α(K)=3.60E-6 5, α(L)=2.57E-7 4, α(M)=1.691E-8 24
   5880.9 4+ 12.5 fs 56    3938.9 13 E2 1.15×10-3B(E2)(W.u.)=8 +6-3, α=1.15E-3 2, α(K)=2.307E-6 32, α(L)=1.646E-7 23, α(M)=1.085E-8 15
   5953.8 2+ ≤ 55 fs   4012(M1(+E2))-0.01 61.03×10-3B(M1)(W.u.)≥0.0044, α=1.03×10-3 1, α(K)=2.173E-6 30, α(L)=1.550E-7 22, α(M)=1.022E-8 14
2+ ≤ 55 fs   5953E2 1.74×10-3B(E2)(W.u.)≥0.052, α=1.74E-3 2, α(K)=1.308E-6 18, α(L)=9.33E-8 13, α(M)=6.15E-9 9
   6195.8 1- ≤ 38 fs   4254[E1] 1.78×10-3B(E1)(W.u.)≥1.3E-4, α=1.78E-3 3, α(K)=1.572E-6 22, α(L)=1.121E-7 16, α(M)=7.39E-9 10
1- ≤ 38 fs   6195(E1) B(E1)(W.u.)≥2.2E-5
   6243.1 0+ ≤ 55 fs   4301[E2] 1.28×10-3B(E2)(W.u.)≥1.2, α=1.28E-3 2, α(K)=2.034E-6 28, α(L)=1.451E-7 20, α(M)=9.57E-9 13
   6392.1 2+ < 42 fs   2161[M1,E2] 0.00036α=0.00036 4, α(K)=5.72×10-6 29, α(L)=4.08E-7 21, α(M)=2.69E-8 14
2+ < 42 fs   4450(M1(+E2))+0.04 41.18×10-3B(M1)(W.u.)>0.0055, α=1.18×10-3 2, α(K)=1.885E-6 26, α(L)=1.344E-7 19, α(M)=8.86E-9 12

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.00+ 157 y 7 
% β- = 100
r02=1.15 fm2 7 (1999Ai02 in Si(32Si,X) at 44.78 MeV/nucleon). Also cross section measured in this work.
E(level): r02=1.15 fm2 7 (1999Ai02 in Si(32Si,X) at 44.78 MeV/nucleon). Also cross section measured in this work.
   1941.72+ 0.57 ps 9  Q=0.11 10 (2024He01), B(E2)=0.0135 20
XREF: H(1930).
   4984.20+ ≤ 0.30 ps XREF: d(4996).
   5219.9(1+) < 80 fs XREF: d(5229).
   6243.10+ ≤ 55 fs XREF: d(6256).
   6392.12+ < 42 fs XREF: d(6394).
   6705.31-   XREF: d(6734).

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Additional Gamma Comments:

E(level)E(gamma)Comments
   1941.7   1941.8E(γ): unweighted average of 1941.4 3 from 32Al β- decay and 1942.12 9 from (22Ne,2pγ). Other: 1930 31 from Coulomb excitation
   4231.0   2289.4I(γ): weighted average of 79 22 from 32Al β- decay and 61 7 from (t,pγ)
   4230.0I(γ): from (t,pγ). Other: 100 22 from 32Al β- decay
   5289.0   1057.9M(γ): d(+Q) from pγ(θ) in (t,pγ); Δπ=yes from level scheme
   3347.1M(γ): D+Q from pγ(θ) in (t,pγ); Δπ=yes from level scheme
   5412.5   3470.6M(γ): d(+Q) from pγ(θ) in (t,pγ); Δπ=(yes) from level scheme
   5411.9M(γ): d from pγ(θ) in (t,pγ); Δπ=(yes) from level scheme
   5583.8     79E(γ): from 1997Fo01 in 208Pb(37Cl,X), not confirmed by 2002AsZY and 2023Wi06
   5772.2   3831M(γ): D+Q from γ(θ) in (t,pγ); Δπ=(yes) from level scheme
   5953.8   4012M(γ): d(+Q) from pγ(θ) in (t,pγ); Δπ=no from level scheme
   6195.8   6195M(γ): d from pγ(θ) in (t,pγ); Δπ=yes from level scheme
   6347.0    574.9E(γ): from (22Ne,2pγ)
    842.1E(γ): from (22Ne,2pγ)
   6392.1   4450M(γ): d(+Q) from pγ(θ) in (t,pγ); Δπ=no from level scheme
   9203.218   9201.798E(γ): from (n,γ).

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