Authors: Balraj Singh and Michael Birch |  Citation: ENSDF |  Cutoff date: 30-SEP-2013 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=5580 keV SYS(n)= 4720 keV SYS(p)= 8550 keV SYQ(α)= -850 keV SY
Reference: 2012WA38

General Comments:

2009St16, 2008StZY thesis: 178Tm nuclide identified in the reaction 9Be(208Pb,X) with a beam energy of 1 GeV/nucleon produced by the SIS-18 accelerator at GSI facility. Target thickness=2.5 g/cm2. Fragments identified in flight by the Fragment Separator (FRS) operated in achromatic mode based on time of flight, Bρ and energy loss. Data collected on six FRS magnetic rigidity settings centered on: 206Hg, 203Ir, 202Os,199Os, 192W, and 185Lu. Nuclides halted in a passive stopper surrounded by the RISING array in "Stopped Beam " configuration.

2012Ku26: 178Tm produced and identified in 9Be(238U,F), E=1 GeV/nucleon reaction using SIS-18 synchrotron facility at GSI. Target=1.6 g/cm2 9Be placed at the entrance of projectile Fragment Separator (FRS). Particle identification was achieved by event-by-event in-flight analysis of time-of-flight, energy loss measurement, and magnetic rigidity (tof-ΔE’-Bρ). Time-of-flight measured using two plastic scintillation detectors, energy loss or deposit by ionization chambers (MUSIC), and magnetic rigidity by four time-projection chambers (TPC), which also provided energy deposit information. Isomer tagging method for known μs isomers was used to verify event-by-event identification and in-flight separation of new isotopes. Gamma rays from the known isomers were recorded in coincidence with the incoming ions using either the RISING array of Ge detectors at GSI or only two Ge detectors, a stopper foil and a scintillator for veto signal. Measured production cross section. Comparison of measured σ with predictions from ABRABLA model and EPAX-3 model

Earlier secondary report:

2000PoZY: 178Tm produced in 9Be(208Pb,X) at 1 GeV/nucleon at GSI facility. Many of the authors are the same as in 2009St16 and 2012Ku26

Q-value: Estimated uncertainties in 2012Wa38: 400 for Q(β-), 500 for S(n), 640 for S(p), 500 for Q(α)

Q-value: S(2n)=10890 410 (syst,2012Wa38), S(2p)=19560 (1997Mo25, theory)

  0 > 300 ns
% β- = ?

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Additional Level Data and Comments:

  0 > 300 ns
% β- = ?
Production σ=24 nb 3 (2012Ku26).

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