ADOPTED LEVELS for 123Ru

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

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=12640 keV SYS(n)= 2840 keV SYS(p)= 17530 keV SYQ(α)= -12400 keV SY
Reference: 2021WA16

General Comments:

2010Oh02: 123Ru nuclide identified in Be(238U,F) and Pb(238U,F) reactions with a 238U86+ beam energy of 345 MeV/nucleon produced by the cascade operation of the RIBF accelerator complex of the linear accelerator RILAC and four cyclotrons RRC, fRC, IRC and SRC. Identification of 123Ru nuclei was made on the basis of magnetic rigidity, time-of-flight and energy loss of the fragments using BigRIPS fragment separator. Experiments performed at RIKEN facility. Based on α/Q spectrum and Z versus α/Q plot, three counts were assigned to 123Ru isotope. (Q=charge state)

2015Lo04: 123Ru nuclide produced at RIBF-RIKEN facility in 9Be(238U,F) reaction at E=345 MeV/nucleon with an average intensity of 6×1010 ions/s. Identification of 123Ru was made by determining atomic Z and mass-to-charge ratio α/Q, where Q=charge state of the ions. The selectivity of ions was based on magnetic rigidity, time-of-flight and energy loss. The separated nuclei were implanted at a rate of 50 ions/s in a stack of eight double-sided silicon-strip detector (WAS3ABi), surrounded by EURICA array of 84 HPGe detectors. Correlations were recorded between the implanted ions and β rays. The half-life of 123Ru isotope was measured from the correlated ion-β decay curves and maximum likelihood analysis technique as described in 2014Xu07. Comparison of measured half-lives with FRDM+QRPA, KTUY+GT2 and DF3+CQRPA theoretical calculations

Structure calculations: 2019Mo01, 2017El01, 2017Ko24, 2016Ma12, 2015Sa14, 2013Fa08, 2003Mo09, 1997Bo24, 1997Mo25

Q-value: ΔQ(β-)=640, ΔS(n)=710, ΔS(p)=580, ΔQ(α)=580 (syst,2021Wa16)

Q-value: S(2n)=8070 640, Q(β-n)=7260 580 (syst,2021Wa16)




E(level)
(keV)
T1/2(level)
  0 19 ms 2 
% β- = 100
% β-n = ?
% β-2n = ?

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0 19 ms 2 
% β- = 100
% β-n = ?
% β-2n = ?
Measured σ=2 pb (2010Oh02), systematic uncertainty≈40%. Probability of misidentification of 123Ru isotope<0.001% (2010Oh02).

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