ADOPTED LEVELS, GAMMAS for 80Zr

Author: Balraj Singh |  Citation: Nucl. Data Sheets 105, 223 (2005) |  Cutoff date: 22-Jun-2005 

 Full ENSDF file | Adopted Levels (PDF version) 


S(n)= 1.65×104 keV SYS(p)= 4.4×103 keV 16Q(α)= -3.7×103 keV 15
Reference: 2012WA38

References:
  A  24Mg(58Ni,2nγ) 

General Comments:

80Zr is an important ’waiting-point’ (n=Z) nuclide in the rapid-proton capture (rp) process and in x-ray burst simulations.

80Zr nucleus first identified through (evaporation residues)(prompt γ)-coin studies in 24Mg(58Ni,2nγ) reaction (1987LeZT,1987Li14). Same reaction used in 2001La31 in mass measurement and in 2000Re03 to study the yrast sequence of levels up to 10+

Other reactions for production of 80Zr:

2002Fa13, 2001Ki13: Fragmentation of 112Sn ion beam at 1 GeV/nucleon with Be target; fragment recoil separator

1998Is06: 98Al(58Ni,X) E=300 MeV. Measured mass, tof spectrometer

Mass measurement: 2001La31, 1998Is06

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

Q-value: Δ(S(n))=1540; S(p)=4450 1560, Q(α)=3700 1490; Q(εp)=2670 1490 (2003Au03)









E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)Final Levels
     0.0A 0+ 4.6 s 6 
% ε = 100
% εp = ?
    
   288.9 2 A (2+)      288.9 2 
  100
     0.0
0+
   825.8 4 A (4+)      536.9 3 
  100
   288.9
(2+)
  1605.0 7 A (6+)      779.2 5 
  100
   825.8
(4+)
  2610.0 12 A (8+)     1005 1 
  100
  1605.0
(6+)
  3789.0 16 A (10+)     1179 1 
  100
  2610.0
(8+)

Jπ(level): From 2001Fi13 based on γ(θ) data and systematics of population of yrast sequence in even-even nuclei

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)Final Levels
Band 1 - GS band
     0.0 0+ 4.6 s 6 
% ε = 100
% εp = ?
    
   288.9 2  (2+)      288.9 2 
  100
     0.0
0+
   825.8 4  (4+)      536.9 3 
  100
   288.9
(2+)
  1605.0 7  (6+)      779.2 5 
  100
   825.8
(4+)
  2610.0 12  (8+)     1005 1 
  100
  1605.0
(6+)
  3789.0 16  (10+)     1179 1 
  100
  2610.0
(8+)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 4.6 s 6 
% ε = 100
% εp = ?
β2≈0.4 (from energies of 2+ and 4+ states (1987Li14)). 1991Zh23 discuss this state in terms of superdeformation.
E(level): GS band.
   288.9(2+)   E(level): GS band.
   825.8(4+)   E(level): GS band.
  1605.0(6+)   E(level): GS band.
  2610.0(8+)   E(level): GS band.
  3789.0(10+)   E(level): GS band.

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