ADOPTED LEVELS for 157Pr

Author: Filip G. Kondev |  Citation: ENSDF |  Cutoff date: 20-Feb-2017 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=7921 keV 301S(n)= 5044 keV 361S(p)= 11009 keV 424Q(α)= -4905 keV 424
S(2n)= 9268 keV 361S(2p)= 25188 keV 424Q(β-n)= 3862 keV 361
Reference: 2017WA10

General Comments:

2017Wu04: The 157Pr nuclide was produced at the RIBF-RIKEN facility using the 9Be(238U,F) reaction at E=345 MeV/nucleon. Two experiments, optimized for the transmission of 158Nd and 170Dy ions, were carried out with average beam intensities of 7 pnA and 12 pnA, respectively. The identification of the nuclide of interest was made in the BigRIPS separator by determining the atomic number and the mass-to-charge ratio of the ion using the tof-Bρ-ΔE method. The reaction products were transported through the ZeroDegree Spectrometer and implanted into the beta-counting system WAS3ABi that was surrounded by the EURICA array comprising of 84 HPGe detectors. The typical implantation rate was ~100 ions/s. Measured: implanted ion-β--t, implanted ion-β--γ-t and implanted ions-γ-t correlations. Deduced: T1/2.





E(level)
(keV)
Jπ(level) T1/2(level)
  0.0 (3/2-) 0.295 s +29-11 
% β- = 100
% β-n = ?

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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