Authors: Balraj Singh and Jun Chen |  Citation: Nucl. Data Sheets 158, 1 (2019) |  Cutoff date: 16-May-2019 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=-14130 keV SYS(n)= 15820 keV SYS(p)= -570 keV SYQ(α)= -2250 keV SY
Reference: 2017WA10

  A  73Sr ε decay (25 MS) 

General Comments:

1996Pf01: 73Rb produced in 58Ni(78Kr,X), E=75 MeV/nucleon, tof analysis.

1996Jo17: 73Rb produced in 93Nb(p,X), E=1 GeV; yield measurement

2005Ro39: deduced mass excess from measurement of mass excess for mirror nucleus 73Kr at ISOLDE-CERN. No events were seen for 73Rb. Deduced upper limit of half-life of 73Rb decay

2017Su31: 9Be(124Xe,X),E=345 MeV/nucleon. Measured β(fragment) correlated events using BigRIPS and ZeroDegree Spectrometer for the separation and tagging of nuclei by Bρ-tof-ΔE technique at RIBF-RIKEN facility. The ion beam was implanted into the active silicon stopper WAS3ABi with subsequent detection of β+, proton-delayed γ-rays by the EURICA HPGe detector array. Deduced upper limit of half-life of 73Rb g.s. decay.

Q-value: Estimated uncertainties (2017Wa10): 450 for Q(β-), 540 for S(n), 200 for S(p), 210 for Q(α)

Q-value: S(2n)=30160 450, S(2p)=4160 200, Q(εp)=5690 200 (syst,2017Wa10)

XREFJπ(level) T1/2(level)
  0A (3/2-) < 81 ns
% ε = ?
% p = ?
  3.23E3 20 A (1/2-) % p = 100

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Additional Level Data and Comments:

  0(3/2-) < 81 ns
% ε = ?
% p = ?
Evidence for proton decay and unbound character of 73Rb g.s. found by 1996Jo17, but percent decay mode was not deduced.
  3.23E3(1/2-) % p = 100
This level decays by protons to 72Kr g.s.
E(level): This level decays by protons to 72Kr g.s.

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