ADOPTED LEVELS, GAMMAS for 87Zr

Authors: T.D. Johnson and W.D. Kulp |  Citation: Nucl. Data Sheets 129, 1 (2015) |  Cutoff date: 27-Jul-2015 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-5473 keV 8S(n)= 9449 keV 6S(p)= 7352 keV 15Q(α)= -4974 keV 8
Reference: 2012WA38

References:
  A  (HI,xnγ)  B  87Nb β+ decay (2.6 M)
  C  87Nb β+ decay (3.75 M)  D  87Zr IT decay (14.0 S)
  E  90Zr(3He,6He) 

General Comments:

For model calculations of level energies and configurations, see 1985Ox01.

; Systematics of 1-qp configurations, 2010Ro27

Other recent theory and calcuations:2010Ro27,2006Es02

Q-value: Q(β-n)=-18285 7, Q(εcp)=-2112 4

Q-value: Mass excess from 2008We10: -79341.4 53 keV, from 2012Ka13: -79343.9 50 keV, using 97Mo as reference (jyfltrap)










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
      0.0ABCDE 9/2+ 1.68 h 1 
% ε = 100
     
    200.91 12 ABCDE 7/2+ 2.44 ns 10     201.02 14 
  100
M1+E2
      0.0
9/2+
    335.84 19 A CDE 1/2- 14.0 s 2 
% IT = 100
   134.93 15 
  100
E3
    200.91
7/2+
    470.63 12 AB    (7/2+)      470.63 12 
  100
(D+Q)
      0.0
9/2+
    523.7 23  B         322.8 23 
  100

    200.91
7/2+
    589.3 17  B         388.7 23 
  100

    200.91
7/2+
    801.50 15 AB    (7/2)      600.9 2 
   801.2 2 
  100 16 
   42 13 

(D)
    200.91
      0.0
7/2+
9/2+
    817.45 22  B  E      616.5 2 
  100

    200.91
7/2+
    931.53 24 A          460.9 2 
  100

    470.63
(7/2+)
   1061 15     E        
   1069.42 19 A     (13/2)+ < 49 ps   1069.4 2 
  100
E2
      0.0
9/2+
   1087.37 15 AB    (9/2)      886.4 2 
  1087.4 2 
  100
   17


    200.91
      0.0
7/2+
9/2+
   1124.88 20 A     (11/2+)     1124.9 2 
  100
D+Q
      0.0
9/2+
   1284.0 23  B         466.5 23 
  100

    817.45

   1287.5 23  B         470.0 23 
  100

    817.45

   1505.5 23  B        1304.6 23 
  100

    200.91
7/2+
   1656.9 3 A     (11/2+)      569 1 
  1456 1 
  1657 1 
   75
   50
  100

(E2)
(M1+E2)
   1087.37
    200.91
      0.0
(9/2)
7/2+
9/2+
   1669 4  B         381.3 23 
  100

   1287.5

   1691.3 3 A     (13/2)      567
   621.9 2 
  100
   75

(D)
   1124.88
   1069.42
(11/2+)
(13/2)+
   1749 4  B         461.7 23 
  100

   1287.5

   1884.4 3  B    (7/2+,9/2+,11/2+)      797.0 23 
  1066.8 3 
  1083.0 7 
  1295.4 23 
  1683.6 7 
  1884.5 7 
   14
  100 11 
    6 3 
    5
   41 4 
   89 8 






   1087.37
    817.45
    801.50
    589.3
    200.91
      0.0
(9/2)

(7/2)

7/2+
9/2+
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   1911 4  B         242.4 23 
  100

   1669

   1919.6 23  B        1718.7 23 
  100

    200.91
7/2+
   1949 3  B        1360.1 23 
  100

    589.3

   2059.2 23  B        1858.3 23 
  100

    200.91
7/2+
   2069.3 23  B        1868.4 23 
  100

    200.91
7/2+
   2073.72 25 A     (13/2-) 2.97 ns 20     416.8 2 
   949.0
  1004.3 2 
   79
   16
  100
D
[D]
(D)
   1656.9
   1124.88
   1069.42
(11/2+)
(11/2+)
(13/2)+
   2125 15     E        
   2201.9 3 A     (17/2)+ < 35 ps   1132.5 2 
  100
E2
   1069.42
(13/2)+
   2245.3 23  B        2044.4 23 
  100

    200.91
7/2+
   2287 15     E        
   2312.5 4 A     (17/2-) 2.74 ns 9     110.6 10 
   238.8 2 
   58
  100
(D)
E2
   2201.9
   2073.72
(17/2)+
(13/2-)
   2354.3 7  B        2153.4 7 
  100

    200.91
7/2+
   2467.1 4 A     (17/2-) 11 ps 3     154.7 2 
  100
(M1+E2)
   2312.5
(17/2-)
   2598.2 23  B        2397.3 23 
  100

    200.91
7/2+
   2894.1A     (21/2)+ 71 ps 7     692.2
  100
E2
   2201.9
(17/2)+
   2986.1 4 A     (19/2-)      521.9
   675.8 2 
   30
  100
(D)
(D)
   2467.1
   2312.5
(17/2-)
(17/2-)
   3053.3 23  B        2852.3 23 
  100

    200.91
7/2+
   3236.8A     (19/2-) 3.0 ps 6     924.8
  100
(M1+E2)
   2312.5
(17/2-)
   3365.9 8 A     (21/2-) < 3 ps    129.7
   378.2
   900.0
 
   88
  100
(D+Q)
(D+Q)
(E2)
   3236.8
   2986.1
   2467.1
(19/2-)
(19/2-)
(17/2-)
   3380.4 15 A     (23/2) < 0.2 ps    486.4
  100

   2894.1
(21/2)+
   3447.0 23  B        3246.0 23 
 

    200.91
7/2+
   3942.7A     (25/2) 0.15 ps 5     562.4
  1048.5
  100
 
(D)

   3380.4
   2894.1
(23/2)
(21/2)+
   4056.8A     (25/2+)     1162.7
  100

   2894.1
(21/2)+
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
   4128.7A     (25/2) 0.80 ps 20     748.4
  100
(D)
   3380.4
(23/2)
   4333.1A     (25/2-) 6.9 ps 14     967.2
  100
(E2)
   3365.9
(21/2-)
   4530.2A     (27/2) 0.44 ps 10     401.8
   587.3
  1149.7
   33
  100
 

(D)

   4128.7
   3942.7
   3380.4
(25/2)
(25/2)
(23/2)
   4618.6A     (27/2-)      285.6
  100

   4333.1
(25/2-)
   5054.8A     (29/2+)      524.5
  1112.3
 
 


   4530.2
   3942.7
(27/2)
(25/2)
   5074.3 16 A     (27/2-) 0.5 ps 2     741.0
  100
(D)
   4333.1
(25/2-)
   5507.6A     (29/2+)      977.4
  1378.7
 
 


   4530.2
   4128.7
(27/2)
(25/2)
   5529.3A     (29/2-)      455.0
   910.8
  1196.1
 
 
 



   5074.3
   4618.6
   4333.1
(27/2-)
(27/2-)
(25/2-)
   5689.9A     (29/2-)      615.6
  100

   5074.3
(27/2-)
   5803.2A     (31/2+)      295.4
  1273.0
 
 


   5507.6
   4530.2
(29/2+)
(27/2)
   6212.6A     (31/2-)      683.4
  100

   5529.3
(29/2-)
   6234.3A     (33/2+)      431.0
  1179.5
 
 


   5803.2
   5054.8
(31/2+)
(29/2+)
   6268.8A     (31/2-)      578.8
  100

   5689.9
(29/2-)
   6573.7A     (35/2+)      339.3
  100

   6234.3
(33/2+)
   6840.1A     (33/2-)      627.5
  100

   6212.6
(31/2-)
   7451.9A     (35/2-)      611.9
  1183.0
 
 


   6840.1
   6268.8
(33/2-)
(31/2-)
   7476.8A     (37/2+)      903.0
  1242.7
 
 


   6573.7
   6234.3
(35/2+)
(33/2+)
   8777.6A     (39/2-)     1325.7
  100

   7451.9
(35/2-)
  10091.6A     (43/2+)     1314.0
  100

   8777.6
(39/2-)

E(level): From least-squares fit to γ-ray energies.

Jπ(level): From (HI,xnγ), unless indicated otherwise. Based on excitation functions, γ(θ), and, for quadrupole transitions, RUL

T1/2(level): From (HI,xnγ) using Doppler shift attenutation, or recoil distance techniques

M(γ): From (HI,xnγ) and adopted parities, unless indicated otherwise.

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Additional Gamma Data:















E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityMixing
Ratio
Conversion
Coefficient
Additional Data
    200.91 7/2+ 2.44 ns 10     201.02 14 M1+E2-0.35 0.0370B(E2)(W.u.)=3.25 14, B(M1)(W.u.)=0.00095 4, α=0.0370, α(K)=0.0324 5, α(L)=0.00387 6, α(M)=0.000673 10, α(N)=9.43E-5 14, α(O)=6.19E-6 9
    335.84 1/2- 14.0 s 2 
% IT = 100
   134.93 15 E3 2.67B(E3)(W.u.)=0.0646 13, α=2.67, α(K)=1.98 3, α(L)=0.571 9, α(M)=0.1020 16, α(N)=0.01292 20, α(O)=0.000314 5
   1069.42 (13/2)+ < 49 ps   1069.4 2 E2 5.76×10-4B(E2)(W.u.)>0.36, α=5.76E-4, α(K)=0.000508 8, α(L)=5.63E-5 8, α(M)=9.76E-6 14, α(N)=1.385E-6 20, α(O)=9.70E-8 14
   1656.9 (11/2+)     1456 1 (E2) 3.67×10-4α=3.67×10-4, α(K)=0.000264 4, α(L)=2.89E-5 4, α(M)=5.01E-6 7, α(N)=7.12E-7 10, α(O)=5.05E-8 8
(11/2+)     1657 1 (M1+E2) 3.68×10-4α=3.68×10-4, α(K)=0.000210 4, α(L)=2.28E-5 4, α(M)=3.95E-6 6, α(N)=5.63E-7 9, α(O)=4.04E-8 7
   2201.9 (17/2)+ < 35 ps   1132.5 2 E2 5.09×10-4B(E2)(W.u.)>0.38, α=5.09E-4, α(K)=0.000448 7, α(L)=4.95E-5 7, α(M)=8.58E-6 12, α(N)=1.217E-6 17, α(O)=8.54E-8 12
   2312.5 (17/2-) 2.74 ns 9     238.8 2 E2 0.0478B(E2)(W.u.)=7.0 3, α=0.0478, α(K)=0.0414 6, α(L)=0.00534 8, α(M)=0.000929 14, α(N)=0.0001276 19, α(O)=7.37E-6 11
   2467.1 (17/2-) 11 ps 3     154.7 2 (M1+E2)0.5 250.09α=0.09 12, α(K)=0.08 10, α(L)=0.011 16, α(M)=0.002 3, α(N)=0.0003 4, α(O)=1.5×10-5 16
   2894.1 (21/2)+ 71 ps 7     692.2E2 1.67×10-3B(E2)(W.u.)=2.19 22, α=1.67E-3, α(K)=0.001469 21, α(L)=0.0001670 24, α(M)=2.90E-5 4, α(N)=4.09E-6 6, α(O)=2.78E-7 4
   3236.8 (19/2-) 3.0 ps 6     924.8(M1+E2)0.50 257.98×10-4B(E2)(W.u.)=(2.4 20), B(M1)(W.u.)=(0.0074 21), α=7.98E-4, α(K)=0.000705 10, α(L)=7.76E-5 12, α(M)=1.345E-5 20, α(N)=1.91E-6 3, α(O)=1.359E-7 19
   3365.9 (21/2-) < 3 ps    900.0(E2) 8.60×10-4B(E2)(W.u.)>7.4, α=8.60E-4, α(K)=0.000758 11, α(L)=8.47E-5 12, α(M)=1.469E-5 21, α(N)=2.08E-6 3, α(O)=1.442E-7 21
   4333.1 (25/2-) 6.9 ps 14     967.2(E2) 7.25×10-4B(E2)(W.u.)=4.2 9, α=7.25E-4, α(K)=0.000640 9, α(L)=7.12E-5 10, α(M)=1.235E-5 18, α(N)=1.749E-6 25, α(O)=1.218E-7 17

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.09/2+ 1.68 h 1 
% ε = 100
Q=+0.423 48 (2002Fo12,2003Th03), μ=-0.895 9
The 9/2, as opposed to 7/2, spin assignment is consistent with the larger quadrupole moment. See 2002Fo12 for more detail.
E(level): The 9/2, as opposed to 7/2, spin assignment is consistent with the larger quadrupole moment. See 2002Fo12 for more detail.

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Additional Gamma Comments:

E(level)E(gamma)Comments
    200.91    201.02E(γ): Weighted average from (HI,xnγ) and ε+β+ decay (2.6 m).
    335.84    134.93E(γ): Weighted average from (HI,xnγ) and ε+β+ decay (2.6 m).
M(γ): from α(exp) deduced in isomeric decay.
    470.63    470.63E(γ): Weighted average from (HI,xnγ) and ε+β+ decay (2.6 m).
    801.50    600.9I(γ): From ε+β+ decay (2.6 m).
    801.2I(γ): From ε+β+ decay (2.6 m).
    817.45    616.5E(γ): From ε+β+ decay (2.6 m).
   1087.37    886.4E(γ): From ε+β+ decay (2.6 m).
   1284.0    466.5E(γ): From ε+β+ decay (2.6 m).
   1287.5    470.0E(γ): From ε+β+ decay (2.6 m).
   1505.5   1304.6E(γ): From ε+β+ decay (2.6 m).
   1669    381.3E(γ): From ε+β+ decay (2.6 m).
   1749    461.7E(γ): From ε+β+ decay (2.6 m).
   1884.4    797.0E(γ): From ε+β+ decay (2.6 m).
   1066.8E(γ): From ε+β+ decay (2.6 m).
   1083.0E(γ): From ε+β+ decay (2.6 m).
   1295.4E(γ): From ε+β+ decay (2.6 m).
   1683.6E(γ): From ε+β+ decay (2.6 m).
   1884.5E(γ): From ε+β+ decay (2.6 m).
   1911    242.4E(γ): From ε+β+ decay (2.6 m).
   1919.6   1718.7E(γ): From ε+β+ decay (2.6 m).
   1949   1360.1E(γ): From ε+β+ decay (2.6 m).
   2059.2   1858.3E(γ): From ε+β+ decay (2.6 m).
   2069.3   1868.4E(γ): From ε+β+ decay (2.6 m).
   2245.3   2044.4E(γ): From ε+β+ decay (2.6 m).
   2354.3   2153.4E(γ): From ε+β+ decay (2.6 m).
E(level)E(gamma)Comments
   2598.2   2397.3E(γ): From ε+β+ decay (2.6 m).
   3053.3   2852.3E(γ): From ε+β+ decay (2.6 m).

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