Authors: Balraj Singh, and Jun Chen |  Citation: Nucl. Data Sheets 169, 1 (2020) |  Cutoff date: 15-Oct-2020 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=5870 keV SYS(n)= 4760 keV SYS(p)= 8640 keV SYQ(α)= -730 keV SY
Reference: 2017WA10

  A  9Be(208Pb,xγ):ISOMER 

General Comments:

2009Al30 (also 2012Al05): first identification of 190Ta from projectile fragmentation of 208Pb beam at 1 GeV/nucleon with 9Be target at GSI facility. Fragment Recoil separator (FRS) used to separate and identify the 190Ta nuclide. The secondary ions were implanted into the RISING active stopper consisting of double-sided silicon strip detectors. Measured Eγ, Iγ, γγ, γγ(t).

2006Wa31 calculated total Routhian surfaces (TRS), which predicted oblate shapes induced by rotation-alignment of πh11/2~#νi13/2 pair of nucleons, with the oblate shape remaining yrast over a large range of angular momentum. Near-prolate high-K energy minima at h|w≈0 and near-oblate energy minima at h|w≈0.1 MeV are predicted from total Routhian surface (TRS) calculations in this work

Q-value: Estimated uncertainties (2017Wa10): 200 for Q(β-), 280 for S(n), 360 for S(p), and 450 for Q(α)

Q-value: S(2n)=11040 200, S(2p)=19300 540 (syst, 2017Wa10)

XREFJπ(level) T1/2(level)E(γ)
Final Levels
      0  (3) 5.3 s 7 
% β- = 100
  175+XA 42 ns 7 
% IT ≈ 100

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Additional Level Data and Comments:

      0(3) 5.3 s 7 
% β- = 100
Theoretical T1/2: 1.4 s (2019Mo01) and 29 s (2016Ma12).

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