ADOPTED LEVELS, GAMMAS for 78Zn

Authors: Ameenah R. Farhan, Balraj Singh |  Citation: Nucl. Data Sheets 110, 1917 (2009) |  Cutoff date: 30-Jun-2009 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=6223 keV 3S(n)= 6765 keV 3S(p)= 1.626×104 keV SYQ(α)= -1.15×104 keV SY
Reference: 2012WA38

References:
  A  78Cu β- decay (335 MS)  B  78Zn IT decay (319 NS)
  C  79Cu β-n decay (188 MS)  D  Coulomb Excitation

General Comments:

78Zn isotope identified and produced in fission: 1977Al17, 1981Ru07 (chemical separation), 1980Wo08 (mass separation)

1997Hu09: 238U(p,F) E=25 MeV; measured fission yield

2007Ib01: 238U(γ,F), bremsstrahlung beam produced by 500 MeV electron beam. The 78Zn isotope formed in abundance.

Mass measurements (penning-trap method): 2008Ha23 (JYFLTRAP at JYFL), 2008Ba54 (ISOLTRAP-CERN)

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

Q-value: ΔQ(α)=400 (syst,2009AuZZ). Q(β-n)=438 3, s(2n)=11322.9 24, s(2p)=30450 500 (syst) (2009AuZZ)

Q-value: Values in 2003Au03: Q(β-)=6360 90, S(n)=6690 150, S(p)=16050 410 (syst), Q(α)=-11400 410 (syst), Q(β-n)=580 90, s(2n)=11350 120, s(2p)=30310 910 (syst)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0.0ABCD 0+ 1.47 s 15 
% β- = 100
     
   730.2 4 ABCD 2+ 18 ps 4    730.2 4 
  100

     0.0
0+
  1620.7 6 AB D (4+)     890.5 4 
  100

   730.2
2+
  2529.0 9 AB   (6+)     908.3 5 
  100

  1620.7
(4+)
  2673.7 10 AB   (8+) 319 ns 9 
% IT = 100
  144.7 5 
  100
(E2)
  2529.0
(6+)
  3106A    (4+:8+)     576
 

  2529.0
(6+)

E(level): From Eγ’s

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - Yrast cascade
     0.0 0+ 1.47 s 15 
% β- = 100
     
   730.2 4  2+ 18 ps 4    730.2 4 
  100

     0.0
0+
  1620.7 6  (4+)     890.5 4 
  100

   730.2
2+
  2529.0 9  (6+)     908.3 5 
  100

  1620.7
(4+)
  2673.7 10  (8+) 319 ns 9 
% IT = 100
  144.7 5 
  100
(E2)
  2529.0
(6+)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
  2673.7 (8+) 319 ns 9 
% IT = 100
  144.7 5 (E2)0.162α=0.162 5

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 1.47 s 15 
% β- = 100
E(level): From weighted average of values in 78Cu decay and 79Zn IT decay. Yrast cascade.
   730.22+ 18 ps 4  B(E2)=0.077 19 (2007Va20,2009Va01)
E(level): From weighted average of values in 78Cu decay and 79Zn IT decay. Yrast cascade.
  1620.7(4+)   XREF: d(?).
E(level): From weighted average of values in 78Cu decay and 79Zn IT decay. Yrast cascade. From IT decay.
Jπ(level): From systematics of (8+) isomers in n=48 isotones (2000Da07).
  2529.0(6+)   E(level): From weighted average of values in 78Cu decay and 79Zn IT decay. Yrast cascade. From IT decay.
Jπ(level): From systematics of (8+) isomers in n=48 isotones (2000Da07).
  2673.7(8+) 319 ns 9 
% IT = 100
XREF: α(?).
E(level): From weighted average of values in 78Cu decay and 79Zn IT decay. Yrast cascade. From IT decay.
Jπ(level): From systematics of (8+) isomers in n=48 isotones (2000Da07).

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Additional Gamma Comments:

E(level)E(gamma)Comments
   730.2   730.2E(γ): From weighted average of values in 78Cu decay and 79Zn IT decay
  1620.7   890.5E(γ): From weighted average of values in 78Cu decay and 79Zn IT decay
  2529.0   908.3E(γ): From IT decay
  2673.7   144.7E(γ): From IT decay
M(γ): from intensity balance at 2528 level mult=E2 or M2, but E2 is more likely from systematics of n=48 isotones.
  3106   576E(γ): from β- decay

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