ADOPTED LEVELS:UNOBSERVED for 89Rh
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 30-Nov-2021
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 31-JUL-2016
Author: Balraj Singh | Citation: Nucl. Data Sheets 114, 1 (2013) | Cutoff date: 20-Oct-2012
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 16860 keV SY | S(p)= -1400 keV SY | Q(α)= -2230 keV SY | |||
| Reference: 2021Wa16 |
| E(level) (keV) | T1/2(level) |
| 0? | < 120 ns % ε = ? % εp = ? % p = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
The 89Rh isotope is expected to be unbound towards proton emission. Laboratory identification of 89Rh remains uncertain, as also in the most recent study by 2016Ce02
1995Ry03 (also 1995Le14): 89Rh isotope reported by analyzing fragments by time-of-flight (≈1.5 μs) method in Ni(112Sn,X) at E=58 MeV/nucleon, GANIL facility using LISE3 spectrometer. The 89Rh fragments were observed 1.5 μs after a time-of-flight. It was not known whether these events were from the ground state or an isomer
2007WeZX, 2000WeZZ (also E. Wefers et al., GSI annual (2000) report 2001-1,p10): no evidence was found for the formation of 89Rh isotope in 9Be(112Sn,X) at E(112Sn)=1 GeV/nucleon, FRS at GSI, with the implication that it may be unbound towards proton emission.
2016Ce02: 89Rh nuclide searched at RIBF-RIKEN facility in 9Be(124Xe,X) reaction at E=345 MeV/nucleon with an average beam intensity of 30 pnA. Identification of residues was made by determining atomic Z and mass-to-charge ratio α/Q, where Q=charge state of the ions. The selectivity of ions was based on magnetic rigidity, time-of-flight and energy loss using BigRIPS separator and zero degree spectrometer ZDS. The separated nuclei were implanted in a wide range silicon-strip stopper array for ion and β particle detection WAS3ABi, consisting of three highly-segmented 1 mm thick double-sided silicon detectors, a stack of ten segmented 1 mm thick single-sided silicon strip detectors. The γ rays were detected by EURICA array of 84 HPGe detectors surrounding the WAS3ABi system. In addition an array of 18 LaBr3(Ce) detectors was used for γ detection in fast-timing measurements. An upper limit of one event was assigned by authors to the 89Rh nuclide
Theoretical calculations: consult NSR database at www.nndc.bnl.gov/nsr/ or additional document records in this dataset for ten primary references, seven for structure and three for half-life and decay mode of 89Rh.
Q-value: Estimated uncertainties (2021Wa16): 540 for S(n), 200 for S(p), 540 for Q(α)
Q-value: Q(ε)=12720 360, Q(εp)=8730 360, S(2p)=2540 360 (syst,2021Wa16). S(2n)=30740 (theory, 2019Mo01)