ADOPTED LEVELS, GAMMAS for 123Ag

Author: Jun Chen |  Citation: Nucl. Data Sheets 174, 1 (2021) |  Cutoff date: 15-Apr-2021 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=7850 keV 30S(n)= 6530 keV 50S(p)= 12240 keV 40Q(α)= -9170 keV 30
Reference: 2021WA16

References:
  A  123Pd β- decay  B  123Ag IT decay (393 NS)
  C  123Ag IT decay (202 NS) 

General Comments:

Other measurements:

1976Lu02: 123Ag produced and identified in 235U(n,F) E=th reaction followed by on-line mass separation. Measured β-delayed neutrons, half-life of 123Ag decay

Precise mass measurements: 2010Br02, 2008Su19 (also 2010Li02)

Structure calculations: 2017Ko24, 2015Sa14, 2012Ji07, 2007Na28, 2003Bo06, 2003Bo48, 1997Bo24, 1996Bo11

The level scheme is based on that of 2019Ch14 in 123Pd β- decay and 2013La11 in 123Ag IT decay (393 ns).

Q-value: S(2n)=11310 30, S(2p)=27900 620, Q(β-n)=2970 30 (2021Wa16)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0AB  (7/2+) 0.299 s 7 
% β- = 100
% β-n = 0.62 9
     
    26.96 24 AB  (9/2+)       27S
 

     0.0
(7/2+)
    59.8 8 A C (1/2-)        
   385.0 7 A   (3/2-,5/2-)      325.1
 

    59.8
(1/2-)
   442.9 7 A C (3/2-,5/2-)       57.9
   383.1 7 
 
  100


   385.0
    59.8
(3/2-,5/2-)
(1/2-)
   656.8 4 AB  (11/2+) < 25 ns    629.6 5 
  100

    26.96
(9/2+)
   740.9 3 AB  (13/2+) < 25 ns     84.1
   714.0 2 
   10 5 
  100


   656.8
    26.96
(11/2+)
(9/2+)
   968.9 7 A        526.0
 

   442.9
(3/2-,5/2-)
  1036.2 4 A C      593.3 5 
  1009.2
  100
 


   442.9
    26.96
(3/2-,5/2-)
(9/2+)
  1076.54 24 AB  (9/2-,11/2+)      335.2 5 
  1049.3 5 
  1076.5 3 
   19 4 
   51 8 
  100 7 



   740.9
    26.96
     0.0
(13/2+)
(9/2+)
(7/2+)
  1426.2 3 AB  (13/2-)      349.5 2 
   685.6 2 
   769.3 5 
   46.3 25 
  100.0 28 
   34.2 18 



  1076.54
   740.9
   656.8
(9/2-,11/2+)
(13/2+)
(11/2+)
  1426.4 8 A C      390.2 7 
  100

  1036.2

  1426.4+Y  C 202 ns 20 
% IT = 100
     X?
 

  1426.4

  1473.9 4  B  (17/2-) 393 ns 16 
% IT = 100
    48S
   732.7 3 
   75 2 
  100 30 
[E2]
[M2]
  1426.2
   740.9
(13/2-)
(13/2+)
  1647.2 5 A        611.0
 

  1036.2

  1806.7 5 A        770.5
 

  1036.2

  1852.4 5 A        816.2
 

  1036.2

  2217.0 6 A        569.8
 

  1647.2

E(level): From a least-squares fit to γ-ray energies, assuming ΔEγ=0.3 keV where not given.

Jπ(level): For excited states, tentative assignment are from 2013La11 based on systematics and observed decay pattern and also from 2019Ch24 based on shell-model predictions.

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityConversion
Coefficient		Additional Data
  1473.9 (17/2-) 393 ns 16 
% IT = 100
    48[E2]19.9B(E2)(W.u.)=7.1 8, α=19.9
(17/2-) 393 ns 16 
% IT = 100
   732.7 3 [M2]0.0068B(M2)(W.u.)=9.0×10-4 26, α=0.0068

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.0(7/2+) 0.299 s 7 
% β- = 100
% β-n = 0.62 9
%β-n: weighted average of 0.55 9 (1983Re05, uncertainty of 3.6% statistical and 15% systematic given in 1983Re05 combined in quadrature by the evaluator), 0.60 25 (2014TeZY, neutron-β measurement), 1.0 5 (2006Mo07, from implant-β decay curve analysis), and 1.01 24 (2021Te02, neutron counting).

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Additional Gamma Comments:

E(level)E(gamma)Comments
    26.96    27E(γ): not observed experimentally in 2013La11 and 2019Ch24
   442.9   383.1E(γ): other: 383.1 from 123Pd β- decay (2019Ch24)
   656.8   629.6E(γ): other: 629.7 from 123Pd β- decay (2019Ch24)
   740.9    84.1E(γ): γ not seen in 2013La11
   714.0E(γ): other: 713.6 from 123Pd β- decay (2019Ch24)
  1036.2   593.3E(γ): other: 594.0 from 123Pd β- decay (2019Ch24)
  1076.54  1049.3E(γ): other: 1049.6 from 123Pd β- decay (2019Ch24)
  1076.5E(γ): other: 1077.0 from 123Pd β- decay (2019Ch24)
  1426.2   349.5E(γ): other: 349.1 from 123Pd β- decay (2019Ch24)
   685.6E(γ): other: 685.3 from 123Pd β- decay (2019Ch24)
   769.3E(γ): other: 770.0 from 123Pd β- decay (2019Ch24)
  1426.4   390.2E(γ): other: 390.1 from 123Pd β- decay (2019Ch24)
  1426.4+Y     XE(γ): de-exciting transition directly from this isomer is not observed (2013La11). Such transition could feed directly the 1426.1 level or possible unobserved intermediate levels that feed the 1426.1 level

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