Authors: Balraj Singh, M.S. Basunia, Murray Martin Et Al., |  Citation: Nucl. Data Sheets 160, 405 (2019) |  Cutoff date: 30-Oct-2019 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=4859 keV 27S(n)= 3590 keV 30S(p)= 6310 keV SYQ(α)= 4330 keV SY
Reference: 2017WA10

General Comments:

1998Pf02: 218Bi nuclide produced and identified in 9Be(238U,X) reaction at E(238U)=1 GeV/nucleon.

2004De16, 2004Fr14 (also 2004DeZV thesis): 218Bi nuclide produced in spallation reaction with a 1.4-GeV proton beam on a uranium carbide target at ISOLDE facility.

2010Al24 (also 2009Al32): 218Bi nuclide identified in 9Be(238U,X),E=1 GeV/nucleon, beam produced by the SIS synchrotron at GSI facility. The fragment residues were analyzed with the high resolving power magnetic spectrometer Fragment separator (FRS).

2012Be28: 218Bi was produced in projectile fragmentation of 238U at 1 GeV/nucleon beam provided by the UNILAC-SIS accelerator at GSI with an intensity of 1.5×109 ions/spill (a repetition of 3 s and an extraction time of 1 s), bombarding a 9Be target. Reaction products were separated and identified in the magnetic spectrometer Fragment Separator (FRS), and implanted in a composite DSSSD detector system comprising three layers, each with three DSSSD pads with 16x16 pixels. The DSSSD detectors were surrounded by the RISING γ-ray spectrometer array of 105 Ge crystals arranged in 15 clusters. Measured γ, βγ(t) in coincidence with implanted recoils. α total of 6678 implanted 218Bi ions were detected.

2014Mo02, 2014Mo15: 218Bi was produced in projectile fragmentation of 1 GeV/nucleon 238U beam from UNILAC-SIS accelerator at GSI, bombarding a 9Be target. The reaction products were separated and identified in the magnetic spectrometer Fragment Separator (FRS), based on Bρ-ΔE-Bρ scheme.

2017Ca12, 2016Ca25 (also 2014Ca23): 218Bi produced in fragmentation of 1 GeV/nucleon 238U beam from SIS-18 synchrotron at GSI on a 9Be target of 1.6 g/cm2 thickness. Reaction products were separated and identified by GSI Fragment Separator (FRS) using Bρ-ΔE-Bρ technique. The FRS tracking detectors were four time-projection chambers (TPCs), two ionization chambers, and thin plastic scintillators for tof measurement. Mass-over-charge (α/Q) ratios were measured for ions analyzed on an event-by-event basis. Finally selected ions of interest were implanted into a stack of double-sided silicon strip detectors SIMBA, which also detected β-decay events. Comparison with theoretical calculations using FRDM+QRPA, DF3+cQRPA KTUY and RHB+RQRPA models. (cQRPA=continuum quasi-random-phase approximation; FRDM=finite-range droplet model; DF3=density functional theory; RHB=relativistic Hartree-Bogoliubov; RQRPA=relativistic QRPA; KTUV=Koura-Tachibana-Uno-Yamada model).

Mass measurement: 2012Ch19 (also 2008ChZI thesis)

Theory references: consult NSR database ( for six primary references for calculations of half-lives of radioactive decays

Q-value: Estimated uncertainties (2017Wa10): 300 for S(p), 200 for Q(α)

Q-value: S(2n)=8801 29, S(2p)=16080 300 (syst) (2017Wa10)

Jπ(level) T1/2(level)
  0 (6-,7-,8-) 33 s 1 
% β- = 100

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Additional Level Data and Comments:


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