ADOPTED LEVELS for 237Pa

Author: M. S. Basunia |  Citation: Nucl. Data Sheets 107, 2323 (2006) |  Cutoff date: 15-Mar-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=2136 keV 14S(n)= 5878 keV 20S(p)= 6017 keV 20Q(α)= 3795 keV 19
Reference: 2012WA38

References:
  A  238U(t,α) 

General Comments:

Other reaction: 238U(α,α’p) in 1984De22. E(α)=172 MeV; Proton and α spectra were taken at various angles and in coincidence with the incoming α’s. The authors of 1984De22 deduced fast precompound emission and strong direct nucleon knockout in the (α,α’) reaction. No level information.

Q-value: Note: Current evaluation has used the following Q record 2250 105780 22610.0×102 SY37.0×102 syst 2003Au03

Q-value: ΔS(p)=220 (syst), ΔQ(α)=300 (syst) 2003Au03






E(level)
(keV)		XREFJπ(level) T1/2(level)
     0.0A (1/2+) 8.7 m 2 
% β- = 100
    35 2 A (3/2+)  
    90 3 A (3/2-)  
   105 5 A (9/2+)  
   147 6 A (7/2-)  
   158 6 A (13/2+)  
   202 6 A  
   258 4 A  
   319 4 A  
   364 4 A (3/2+)  
   393 6 A (5/2+)  
   491 4 A  
   554 8 A  
   577 8 A  
   624 4 A  
   686 8 A  
   714 8 A  
   741 8 A  
   972 8 A  
  1025 6 A  
  1112 4 A  

E(level): All levels and their band assignments are from 238U(t,α) data.

Jπ(level): Spin and Nilsson state assignments were made in 1977Th04 from (t,α) data. These assignments were proposed from comparison of experimental cross sections with calculated ones. Tentative assignments of 11/2-, 9/2[514] to the 624- and 5/2-, 1/2[541] to the 1025-keV levels are not included here. See 238U(t,α) section for the proposed assignments.

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)
Band 1 - 1/2[400] band.
     0.0 (1/2+) 8.7 m 2 
% β- = 100
    35 2  (3/2+)  
E(level)
(keV)		Jπ(level) T1/2(level)
Band 2 - 1/2[530] band.
    90 3  (3/2-)  
   147 6  (7/2-)  
E(level)
(keV)		Jπ(level) T1/2(level)
Band 3 - 3/2[651] band.
   105 5  (9/2+)  
   158 6  (13/2+)  
E(level)
(keV)		Jπ(level) T1/2(level)
Band 4 - 3/2[402] band.
   364 4  (3/2+)  
   393 6  (5/2+)  

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(1/2+) 8.7 m 2 
% β- = 100
E(level): 1/2[400] band.
    35(3/2+)   E(level): 1/2[400] band.
    90(3/2-)   E(level): 1/2[530] band.
   105(9/2+)   E(level): 3/2[651] band.
   147(7/2-)   E(level): 1/2[530] band.
   158(13/2+)   E(level): 3/2[651] band.
   364(3/2+)   E(level): 3/2[402] band.
   393(5/2+)   E(level): 3/2[402] band.

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