ADOPTED LEVELS, GAMMAS for 178Yb

Authors: E. Achterberg, O.A. Capurro, G.V. Marti |  Citation: Nucl. Data Sheets 110, 1473 (2009) |  Cutoff date: 31-May-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=646 keV 11S(n)= 6780 keV 10S(p)= 9.5×103 keV SYQ(α)= -2.E2 keV SY
Reference: 2012WA38

References:
  A  176Yb(t,p)  B  176Yb(48Ca,xγ),176Yb(154Sm,xγ)

General Comments:

Levels: Level energies derived from proton spectra in 176Yb(t,p) reactions (1983Bu03,1982Zu02), and γ-ray data from 176Yb(48Ca,Xγ) and 176Yb(154Sm,Xγ) deep inelastic reactions (1997Le11,1999As05).

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

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








E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
Final Levels
      0.0AB 0+ 74 m 3 
% β- = 100
   
     84.0 3 AB 2+      84.0 3 
      0.0
0+
    278.0 7 AB 4+     194.0 6 
     84.0
2+
    578.1 12 AB (6+)     300.1 10 
    278.0
4+
    981.3 18  B (8+)     403.2 13 
    578.1
(6+)
   1221 3 A  (2+)      
   1315 3 A  0+      
   1335 3 A       
   1387 3 A  (2+)      
   1404 3 A  2+      
   1436 3 A       
   1483.5 25  B (10+)     502.2 17 
    981.3
(8+)
   1559 4 A  (4+)      
   1705 5 A       
   1813 5 A       
   1869 5 A       
   1969 4 A       
   2080 4  B (12+)     596.0 20 
   1483.5
(10+)
  ≈2111A       
   2131 4 A  (4+,5-)      
   2351 5 A       
   2371 5 A       
   2390 5 A  (4+)      
   2405 5 A       
   2690 7 A  (4+)      
   2770 4  B (14+)     690.0 23 
   2080
(12+)
   2899 7 A  3-      
   2996 13 A  (4+)      
   3037 10 A  1-      

Jπ(level): Jπ assignments are based on experimental L-values from 175Yb(t,p) and on band structure systematics of lighter even-Yb isotopes. L-values are given with individual levels.

E(γ): γ-ray data from (HI,Xγ) deep inelastic reaction dataset.

Back to top

Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)Final Levels
Band 1 - Kπ=0+ GS ROTATIONAL band
      0.0 0+ 74 m 3 
% β- = 100
   
     84.0 3  2+      84.0 3 
      0.0
0+
    278.0 7  4+     194.0 6 
     84.0
2+
    578.1 12  (6+)     300.1 10 
    278.0
4+
    981.3 18  (8+)     403.2 13 
    578.1
(6+)
   1483.5 25  (10+)      
   2080 4  (12+)      
   2770 4  (14+)      
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)Final Levels
Band 2 - Kπ=2+ γ-vibrational band
   1221 3  (2+)      
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)Final Levels
Band 3 - Kπ=0+ band
   1315 3  0+      
   1404 3  2+     
   1559 4  (4+)     

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.00+ 74 m 3 
% β- = 100
E(level): Kπ=0+ GS ROTATIONAL band.
     84.02+   E(level): Kπ=0+ GS ROTATIONAL band.
    278.04+   E(level): Kπ=0+ GS ROTATIONAL band.
    578.1(6+)   E(level): Kπ=0+ GS ROTATIONAL band.
    981.3(8+)   E(level): Kπ=0+ GS ROTATIONAL band.
   1221(2+)   E(level): Kπ=2+ γ-vibrational band.
   13150+   E(level): Kπ=0+ band.
   1387(2+)   E(level): There is some ambiguity about the identity of the 2+ member of the excited Kπ=0+ band. Both the 1387 and the 1404 keV levels have been proposed; see comment in the (t,p) reaction dataset.
   14042+   E(level): Kπ=0+ band. There is some ambiguity about the identity of the 2+ member of the excited Kπ=0+ band. Both the 1387 and the 1404 keV levels have been proposed; see comment in the (t,p) reaction dataset.
   1483.5(10+)   E(level): Kπ=0+ GS ROTATIONAL band.
   1559(4+)   E(level): Kπ=0+ band.
   2080(12+)   E(level): Kπ=0+ GS ROTATIONAL band.
   2131(4+,5-)   Jπ(level): The Jπ assignment should be considered tentative; see comments in the (t,p) reaction dataset.
   2770(14+)   E(level): Kπ=0+ GS ROTATIONAL band.

Back to top