Authors: Balraj Singh Et Al., |  Citation: Nucl. Data Sheets 175, 1 (2021) |  Cutoff date: 19-May-2021 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=4300 keV SYS(n)= 3080 keV SYS(p)= 10380 keV SYQ(α)= 1090 keV SY
Reference: 2021WA16

General Comments:

2010Al24 (also 2009Al32): 219Pb nuclide produced and identified in 9Be(238U,X),E=1 GeV/nucleon reaction at the SIS synchrotron facility of GSI. Target=2500 mg/cm2. The fragment residues were analyzed with the high resolving power magnetic spectrometer Fragment separator (FRS). The identification of nuclei was made on the basis of magnetic rigidity, velocity, time-of-flight, energy loss and atomic number of the fragments using two plastic scintillators and two multisampling ionization chambers. The FRS magnet was tuned to center on 210Au, 216Pb, 219Pb, 227At and 229At nuclei along the central trajectory of FRS.

Unambiguous identification of nuclides required the separation of different charge states of the nuclei passing through the FRS. At 1 GeV/nucleon incident energy of 238U, fraction of fully stripped 226Po nuclei was about 89%. Through the measurement of difference in magnetic rigidity in the two sections of the FRS and the difference in energy loss in the two ionization chambers, the charge state of the transmitted nuclei was determined, especially, that of the singly charged (hydrogen-like) nuclei which preserved their charge in the current experimental setup. Measured production cross sections with 10% statistical and 20% systematic uncertainties

Criterion established in 2010Al24 for acceptance of identification of a new nuclide: 1. number of events should be compatible with the corresponding mass and atomic number located in the expected range of positions at both image planes of the FRS spectrometer; 2. number of events should be compatible with >95% probability that at least one of the counts does not correspond to a charge-state contaminant. Comparisons of measured σ with model predictions using the computer codes COFRA and EPAX.

2016Ca25, 2017Ca12: 219Pb produced in 9Be(238U,X), E=1 GeV/nucleon at GSI facility

Theoretical calculations: eight primary references in the NSR database ( related to structure and radioactivity

Q-value: Estimated uncertainties (2021Wa16): 450 for Q(β-), 500 for S(n), 570 for S(p) and Q(α)

Q-value: S(2n)=7780 500 (syst,2021Wa16). S(2p)=19190 (2019Mo01,theory)

  0 % β- = 100

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Additional Level Data and Comments:

  0 % β- = 100
Production σ=0.502 nb (from e-mail reply of Oct 29, 2010 from H. Alvarez-Pol, which also stated that further analysis was in progress). Production cross section was measured in 2010Al24, and a plot of σ versus mass number for Pb isotopes is shown in their figure 2. Statistical uncertainty=10%, systematic uncertainty=20%.

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