ADOPTED LEVELS, GAMMAS for 85Nb

Authors: Balraj Singh and Jun Chen |  Citation: Nucl. Data Sheets 116, 1 (2014) |  Cutoff date: 31-Dec-2013 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-8770 keV 16S(n)= 13330 keV SYS(p)= 2148 keV 7Q(α)= -2993 keV 7
Reference: 2012WA38

References:
  A  85Nb IT decay (3.3 S)  B  58Ni(40Ca,3APG)

General Comments:

1988Ku14: Isotope produced by 58Ni(32Se,αp) and 60Ni(28Si,p2n), identified by βγ coincidences with 50γ of 85Zr, measured half-life.

Earlier reports about the production of 85Nb: 1981SaZO, 1978DeYC

There are no data for decay of 85Mo to 85Nb. An isomer identified by 2005Ka39, and another tentative isomer by 1998Oi02

Mass measurements: 2011Ha08 (Penning trap mass spectrometer SHIPTRAP), 2006Ka48, 2012Ka13 (Penning-trap method).

Mass excess=-66273 keV 7 (2006Ka48) is most likely for the ground state since only one resonance was seen. There may be small contribution from the 3.3-s isomer at 69+y with Jπ=(1/2-,3/2-). 2006Ka48 suggested that the low-spin isomer would be much less populated than the (9/2+) g.s. in the heavy-ion fusion reaction used to obtain the 85Nb isotope.

Q-value: Estimated ΔS(n)=300 (syst,2012Wa38)

Q-value: Q(εp)=325 6, S(2n)=24010 300, S(2p)=8653 19 (2012Wa38)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
      0.0A  (9/2+) 20.5 s 12 
% ε = 100
     
    0+X B (3/2-)        
    0+YA         
    0+Z?   12 s 5 
% ε = ?
% IT = ?
     
     15.44+X 17  B (9/2+)        
   69+YA  (1/2-,3/2-) 3.3 s 9 
% ε = ?
% IT = ?
    69
 
(E2,M2)
    0+Y

    134.15+X 5  B (5/2-)      134.15 5 
  100
D+Q
    0+X
(3/2-)
    503.69+X 9  B (7/2-)      369.53 8 
   488.5 2 
  100 7 
   33 13 
D

    134.15+X
     15.44+X
(5/2-)
(9/2+)
    649.79+X 17  B (13/2+)      634.34 4 
  100
Q
     15.44+X
(9/2+)
    812.18+X 11  B (9/2-)      308.1 6 
   678.03 11 
    9 4 
  100 17 
D
Q
    503.69+X
    134.15+X
(7/2-)
(5/2-)
   1171.81+X 12  B (11/2-)      359.5 2 
   668.19 10 
  1156.2 4 
    6 3 
  100 13 
   61 13 



    812.18+X
    503.69+X
     15.44+X
(9/2-)
(7/2-)
(9/2+)
   1491.05+X 18  B (17/2+)      841.25 4 
  100
Q
    649.79+X
(13/2+)
   1557.90+X 13  B (13/2-)      386.1 10 
   745.75 11 
   16 5 
  100 16 


   1171.81+X
    812.18+X
(11/2-)
(9/2-)
   1899.74+X 13  B (15/2-)      341.9 10 
   727.95 9 
  1249.8 3 
  <10
  100 6 
   48 4 


(D)
   1557.90+X
   1171.81+X
    649.79+X
(13/2-)
(11/2-)
(13/2+)
   2326.43+X 18  B (17/2-)      426.7 4 
   768.50 15 
   37 7 
  100 15 

Q
   1899.74+X
   1557.90+X
(15/2-)
(13/2-)
   2361.84+X 23  B (17/2)      803.9 2 
  100
Q
   1557.90+X
(13/2-)
   2487.05+X 18  B (21/2+)      995.99 5 
  100
Q
   1491.05+X
(17/2+)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
   2649.87+X 15  B (19/2-)      322.9 10 
   750.16 8 
  1158.5 3 
    2 2 
  100 8 
   10 6 

Q

   2326.43+X
   1899.74+X
   1491.05+X
(17/2-)
(15/2-)
(17/2+)
   2780.1+X 4 ? B      419 4 ?
   453.7 3 ?
   25 25 
  100 50 


   2361.84+X
   2326.43+X
(17/2)
(17/2-)
   3180.45+X 22  B (21/2-)      530.7 3 
   818.4 5 
   854.0 2 
   26 5 
   18 5 
  100 21 


(Q)
   2649.87+X
   2361.84+X
   2326.43+X
(19/2-)
(17/2)
(17/2-)
   3510.94+X 19  B (25/2+)     1023.89 5 
  100
Q
   2487.05+X
(21/2+)
   3522.32+X 16  B (23/2-)      341.9 10 
   872.44 7 
   10 4 
  100 6 

Q
   3180.45+X
   2649.87+X
(21/2-)
(19/2-)
   4178.6+X 3  B (25/2-)      998.11 14 
  100

   3180.45+X
(21/2-)
   4543.16+X 19  B (27/2-)     1020.83 9 
  100

   3522.32+X
(23/2-)
   4568.90+X 20  B (29/2+)     1057.95 6 
  100
Q
   3510.94+X
(25/2+)
   5289.9+X 3  B (29/2-)     1111.35 14 
  100
Q
   4178.6+X
(25/2-)
   5637.14+X 21  B (31/2-)     1093.98 10 
  100
Q
   4543.16+X
(27/2-)
   5794.06+X 21  B (33/2+)     1225.15 8 
  100
Q
   4568.90+X
(29/2+)
   6386.1+X 4  B (33/2-)     1096.2 2 
  100

   5289.9+X
(29/2-)
   6739.38+X 24  B (35/2-)     1102.23 12 
  100

   5637.14+X
(31/2-)
   7216.01+X 25  B (37/2+)     1421.94 12 
  100
Q
   5794.06+X
(33/2+)
   7508.2+X 4  B (37/2-)     1122.1 2 
  100

   6386.1+X
(33/2-)
   7950.0+X 3  B (39/2-)     1210.60 14 
  100

   6739.38+X
(35/2-)
   8739.6+X 4  B (41/2+)     1523.6 3 
  100
Q
   7216.01+X
(37/2+)
   8795.4+X 5  B (41/2-)     1287.1 2 
  100

   7508.2+X
(37/2-)
   8960.0+X 11  B (41/2+)     1744 1 
  100

   7216.01+X
(37/2+)
   9366.6+X 4  B (43/2-)     1416.6 2 
  100

   7950.0+X
(39/2-)
  10264.7+X 6  B (45/2-)     1469.3 3 
  100

   8795.4+X
(41/2-)
  10317.8+X 6  B (45/2+)     1578.2 4 
  100

   8739.6+X
(41/2+)
  11010.3+X 5  B (47/2-)     1643.7 3 
  100

   9366.6+X
(43/2-)
  11962.5+X 7  B (49/2-)     1697.8 4 
  100

  10264.7+X
(45/2-)
E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
  12916.5+X 9  B (51/2-)     1906.2 7 
  100

  11010.3+X
(47/2-)
  13906.0+X 14  B (53/2-)     1943.5 12 
  100

  11962.5+X
(49/2-)
  15144.6+X 17 ? B (55/2-)     2228.0 14 
  100

  12916.5+X
(51/2-)

E(level): From least-squares fit to Eγ data

Jπ(level): As proposed by 1999Jo01 based on band assignments from comparisons with TRS calculations and systematics. The measured DCO ratios for selected transitions are consistent with these assignments. The parentheses are added by the evaluators

M(γ): 1999Jo01 assign E2 to ΔJ=2, Q transitions and M1 or M1+E2 to ΔJ=1 transitions based on DCO ratios. For other transitions where no DCO ratios are available, 1999Jo01 assign multipolarities from band assignments. The evaluators assign mult=Q to ΔJ=2 transitions and d or D+Q for ΔJ=1 transitions only when DCO data are available

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - πg9/2 band.
     15.44+X 17  (9/2+)        
    649.79+X 17  (13/2+)        
   1491.05+X 18  (17/2+)        
   2487.05+X 18  (21/2+)        
   3510.94+X 19  (25/2+)        
   4568.90+X 20  (29/2+)     1057.95 6 
  100
Q
   3510.94+X
(25/2+)
   5794.06+X 21  (33/2+)     1225.15 8 
  100
Q
   4568.90+X
(29/2+)
   7216.01+X 25  (37/2+)     1421.94 12 
  100
Q
   5794.06+X
(33/2+)
   8960.0+X 11  (41/2+)     1744 1 
  100

   7216.01+X
(37/2+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Strongly-coupled band, α=-1/2.
    503.69+X 9  (7/2-)        
   1171.81+X 12  (11/2-)        
   1899.74+X 13  (15/2-)        
   2649.87+X 15  (19/2-)        
   3522.32+X 16  (23/2-)        
   4543.16+X 19  (27/2-)     1020.83 9 
  100

   3522.32+X
(23/2-)
   5637.14+X 21  (31/2-)     1093.98 10 
  100
Q
   4543.16+X
(27/2-)
   6739.38+X 24  (35/2-)     1102.23 12 
  100

   5637.14+X
(31/2-)
   7950.0+X 3  (39/2-)     1210.60 14 
  100

   6739.38+X
(35/2-)
   9366.6+X 4  (43/2-)     1416.6 2 
  100

   7950.0+X
(39/2-)
  11010.3+X 5  (47/2-)     1643.7 3 
  100

   9366.6+X
(43/2-)
  12916.5+X 9  (51/2-)     1906.2 7 
  100

  11010.3+X
(47/2-)
  15144.6+X 17  (55/2-)     2228.0 14 
  100

  12916.5+X
(51/2-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Strongly-coupled band, α=+1/2.
    134.15+X 5  (5/2-)        
    812.18+X 11  (9/2-)        
   1557.90+X 13  (13/2-)        
   2326.43+X 18  (17/2-)        
   3180.45+X 22  (21/2-)        
   4178.6+X 3  (25/2-)      998.11 14 
  100

   3180.45+X
(21/2-)
   5289.9+X 3  (29/2-)     1111.35 14 
  100
Q
   4178.6+X
(25/2-)
   6386.1+X 4  (33/2-)     1096.2 2 
  100

   5289.9+X
(29/2-)
   7508.2+X 4  (37/2-)     1122.1 2 
  100

   6386.1+X
(33/2-)
   8795.4+X 5  (41/2-)     1287.1 2 
  100

   7508.2+X
(37/2-)
  10264.7+X 6  (45/2-)     1469.3 3 
  100

   8795.4+X
(41/2-)
  11962.5+X 7  (49/2-)     1697.8 4 
  100

  10264.7+X
(45/2-)
  13906.0+X 14  (53/2-)     1943.5 12 
  100

  11962.5+X
(49/2-)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     15.44+X(9/2+)   E(level): πg9/2 band.
    134.15+X(5/2-)   E(level): Strongly-coupled band, α=+1/2.
    503.69+X(7/2-)   E(level): Strongly-coupled band, α=-1/2.
    649.79+X(13/2+)   E(level): πg9/2 band.
    812.18+X(9/2-)   E(level): Strongly-coupled band, α=+1/2.
   1171.81+X(11/2-)   E(level): Strongly-coupled band, α=-1/2.
   1491.05+X(17/2+)   E(level): πg9/2 band.
   1557.90+X(13/2-)   E(level): Strongly-coupled band, α=+1/2.
   1899.74+X(15/2-)   E(level): Strongly-coupled band, α=-1/2.
   2326.43+X(17/2-)   E(level): Strongly-coupled band, α=+1/2.
   2487.05+X(21/2+)   E(level): πg9/2 band.
   2649.87+X(19/2-)   E(level): Strongly-coupled band, α=-1/2.
   3180.45+X(21/2-)   E(level): Strongly-coupled band, α=+1/2.
   3510.94+X(25/2+)   E(level): πg9/2 band.
   3522.32+X(23/2-)   E(level): Strongly-coupled band, α=-1/2.
   4178.6+X(25/2-)   E(level): Strongly-coupled band, α=+1/2.
   4543.16+X(27/2-)   E(level): Strongly-coupled band, α=-1/2.
   4568.90+X(29/2+)   E(level): πg9/2 band.
   5289.9+X(29/2-)   E(level): Strongly-coupled band, α=+1/2.
   5637.14+X(31/2-)   E(level): Strongly-coupled band, α=-1/2.
   5794.06+X(33/2+)   E(level): πg9/2 band.
   6386.1+X(33/2-)   E(level): Strongly-coupled band, α=+1/2.
   6739.38+X(35/2-)   E(level): Strongly-coupled band, α=-1/2.
   7216.01+X(37/2+)   E(level): πg9/2 band.
   7508.2+X(37/2-)   E(level): Strongly-coupled band, α=+1/2.
E(level)Jπ(level)T1/2(level)Comments
   7950.0+X(39/2-)   E(level): Strongly-coupled band, α=-1/2.
   8795.4+X(41/2-)   E(level): Strongly-coupled band, α=+1/2.
   8960.0+X(41/2+)   E(level): πg9/2 band.
   9366.6+X(43/2-)   E(level): Strongly-coupled band, α=-1/2.
  10264.7+X(45/2-)   E(level): Strongly-coupled band, α=+1/2.
  11010.3+X(47/2-)   E(level): Strongly-coupled band, α=-1/2.
  11962.5+X(49/2-)   E(level): Strongly-coupled band, α=+1/2.
  12916.5+X(51/2-)   E(level): Strongly-coupled band, α=-1/2.
  13906.0+X(53/2-)   E(level): Strongly-coupled band, α=+1/2.
  15144.6+X(55/2-)   E(level): Strongly-coupled band, α=-1/2.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   69+Y     69M(γ): from α(K)exp>2.6, K/L=4.1 13 (2005Ka39), ce measurements. For E2, α(K)=3.2, K/L=4.5 4. For M2, α(K)=6.3, K/L=6.1 6. The theoretical K/L ratio tends to support E2
   1171.81+X   1156.2E(γ): Dipole moment D0=0.035 fm 6 for 1156.2γ, 0.034 fm 2 for 1249.8γ and 0.018 fm 7 for 1158.5γ, deduced from γ-ray branching ratios suggest octupole correlations (1999Jo01).
   1899.74+X    341.9E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided
   1249.8E(γ): Dipole moment D0=0.035 fm 6 for 1156.2γ, 0.034 fm 2 for 1249.8γ and 0.018 fm 7 for 1158.5γ, deduced from γ-ray branching ratios suggest octupole correlations (1999Jo01).
   2649.87+X   1158.5E(γ): Dipole moment D0=0.035 fm 6 for 1156.2γ, 0.034 fm 2 for 1249.8γ and 0.018 fm 7 for 1158.5γ, deduced from γ-ray branching ratios suggest octupole correlations (1999Jo01).
   3522.32+X    341.9E(γ): Multiply placed with intensity suitably divided
I(γ): Multiply placed with intensity suitably divided

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