ADOPTED LEVELS for 175Ho

Author: Jin Wu |  Citation: Nucl. Data Sheets 206, 1 (2025) |  Cutoff date: 29-Oct-2024 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=5350 keV SYS(n)= 5500 keV SYS(p)= 9460 keV SYQ(α)= -1960 keV SY
Reference: 2021WA16

General Comments:

2012Ku26: 175Ho 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). 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

2017Wu04: The 175Ho nuclide was produced at the RIBF-RIKEN facility using the 9Be(238U,F) reaction at E=345 MeV/nucleon. Two experiments, optimized for the transmission of 158Nd and 170Dy ions, were carried out with average beam intensities of 7 pnA and 12 pnA, respectively. The separation and identification of the nuclide of interest was made in the BigRIPS separator by determining the atomic number and the mass-to-charge ratio of the ion using the tof-Bρ-ΔE method. The reaction products were transported through the ZeroDegree Spectrometer and implanted into the beta-counting system WAS3ABi surrounded by the EURICA array comprising of 84 HPGe detectors. The typical implantation rate was about 100 ions/s. Measured: implanted ion-β-(t), implanted ion-β--γ(t) and implanted ions-γ(t) correlations. Deduced: T1/2.

Q-value: ΔQ(β-)=570, ΔS(n)=500, ΔS(p)=640, ΔQ(α)=570 (2021Wa16)

Q-value: S(2n)=10090 500 (syst), S(2p)=21370 640 (syst), Q(β-n)=580 500 (syst) (2021Wa16)





E(level)
(keV)
Jπ(level) T1/2(level)
  0.0 (7/2-) 1.9 s 6 
% β- = 100
% β-n = ?

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0(7/2-) 1.9 s 6 
% β- = 100
% β-n = ?
Production σ(at 1 GeV/nucleon)=22 nb 2 (2012Ku26).

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