ADOPTED LEVELS, GAMMAS for 33Al

Authors: Jun Chen and Balraj Singh |  Citation: Nucl. Data Sheets 112, 1393 (2011) |  Cutoff date: 31-Mar-2011 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=1.205×104 keV 8S(n)= 5.44×103 keV 8S(p)= 1.493×104 keV 8Q(α)= -1.357×104 keV 8
Reference: 2012WA38

References:
  A  33Mg β- decay (90.5 MS)  B  34Mg β-n decay (20 MS)
  C  HE(33Al,33AlG)  D  SI(33Al,33Al’γ)

General Comments:

Identification: 1971Ar32: 232Th(40Ar,X) E=290 MeV, measured fragment isotopic yield.

Later studies of production and decay studies of 33Al: 1979We10, 1986Vi09, 1987Gi05, 1991Zh24, 1991Or01, 1995ReZZ, 1997Ta22, 2002Mo29, 2006Ro34

1986Wo07: 48Ca(36S,33Al)51V: E=198 MeV. Measured particle spectra with a magnetic spectrometer. Deduced mass excess. Peaks also seen at 1600, 2700, 3590, 4310 and 5270. These belong to 33Al and/or 51V

1999Ai02: Cross section measurement in Si(33Al,X) E=38-80 MeV/ nucleon at NSCL facility. Deduced strong absorption radius

2006Hi18: Spin-polarized 33Al beam produced by fragmentation of a 36S (77.5 MeV/u) on a 9Be target and selected with the high resolution fragment separator LISE at GANIL. Measured Jπ of ground state, magnetic moments, hyperfine structure using laser and β-NMR spectroscopy; deduced g factors, magnetic dipole moments. Compared with shell-model calculations.

2006Kh08: Cross section measurement in Si(33Al,X) E=30-65 MeV/nucleon, deduced ’reduced strong absorption radius= 1.229 fm2 17. The 33Al beam obtained from fragmentation of 48Ca beam with 181Ta target at GANIL facility.

Measured mass excess: 1991Or01, 1991Zh24, 1987Gi05, 1987VaZS, 1986Vi09, 1986Wo07

Level scheme is from 2006AnZW in 33Mg decay and is preliminary

Q-value: Note: Current evaluation has used the following Q record 11963 74 5.54×103 11 14907 75 -13624 74 2009AuZZ

Q-value: Q(β-n)=7480 70 (2003Au03, 2009AuZZ)









E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)Final Levels
     0ABCD (5/2)+ 41.7 ms 2 
% β- = 100
% β-n = 8.5 7
    
   747.5 10   CD (5/2+)      747.5 10 
 
     0
(5/2)+
  1617.9 7 A    (1/2+:9/2+)     1618
  100
     0
(5/2)+
  1838.2 8 A C  (3/2-,5/2-)     1838
  100
     0
(5/2)+
  2365.1 10 A    (3/2-,5/2-)     2365
  100
     0
(5/2)+
  3264.5 9 A        1647
  100
  1617.9
(1/2+:9/2+)
  3714.2 8 A    (3/2-,5/2-)     2096
  3714
  100 22 
   89 22 
  1617.9
     0
(1/2+:9/2+)
(5/2)+
  4310.3 9 A    (1/2,3/2-,5/2-)      596
  1046
  2692
  100 20 
   80 20 
   80 40 
  3714.2
  3264.5
  1617.9
(3/2-,5/2-)

(1/2+:9/2+)
  4730.4 8 A    (3/2-,5/2-)     1466
  2892
  4730
   33 11 
   33 11 
  100 33 
  3264.5
  1838.2
     0

(3/2-,5/2-)
(5/2)+
  5930A    (1/2-,3/2-,5/2-)       
  5980A    (1/2-,3/2-,5/2-)       
  6820A    (1/2-,3/2-,5/2-)       
  7250A    (1/2-,3/2-,5/2-)       
  7470A    (1/2-,3/2-,5/2-)       
  8870A    (1/2-,3/2-,5/2-)       

Jπ(level): From allowed β transitions in 33Mg decay. The evaluators consider the level scheme as incomplete, thus all assignments are given under parentheses

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  5930(1/2-,3/2-,5/2-)   E(level): Level decays by neutrons to 32Al.
  5980(1/2-,3/2-,5/2-)   E(level): Level decays by neutrons to 32Al.
  6820(1/2-,3/2-,5/2-)   E(level): Level decays by neutrons to 32Al.
  7250(1/2-,3/2-,5/2-)   E(level): Level decays by neutrons to 32Al.
  7470(1/2-,3/2-,5/2-)   E(level): Level decays by neutrons to 32Al.
  8870(1/2-,3/2-,5/2-)   E(level): Level decays by neutrons to 32Al.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   747.5   747.5E(γ): from He(33Al,Xγ)

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