1995CzZZ (short conference paper): possible identification of ¹¹⁸Tc in ⁹Be(²³⁸U,f) at 750 MeV/nucleon at GSI facility. But in subsequent published works (1997Be70,1998Do08) by the same group, there was no mention of the formation or identification of the ¹¹⁸Tc isotope; the heaviest Tc isotope identified was ¹¹⁷Tc in 1997Be70 and ¹¹⁵Tc in 1998Do08 (where a Pb target was used instead of Be). In 1995CzZZ, there was no detailed discussion about the formation of new isotopes, ¹¹⁸Tc was simply shown in the chart of nuclides figure 2 in their paper. In the absence of sufficient confirmatory evidence from the same experimental group (1994Be24,1995CzZZ,1997Be70,1998Do08), the identification of ¹¹⁸Tc remained uncertain until the work by 2010Oh02

2010Oh02: ¹¹⁸Tc nuclide identified in Be(²³⁸U,F) and Pb(²³⁸U,F) reactions with a ²³⁸U⁸⁶⁺ beam energy of 345 MeV/nucleon produced by the cascade operation of the RBIF accelerator complex of the linear accelerator RILAC and four cyclotrons RRC, fRC, IRC and SRC. Identification of ¹¹⁸Tc nuclei was made on the basis of magnetic rigidity, time-of-flight and energy loss of the fragments using BigRIPS fragment separator. Experiments performed at RIKEN facility. Based on α/Q spectrum and Z versus α/Q figure 2 in 2010Oh02, about 400 counts were assigned to ¹¹⁸Tc isotope. (Q and Q(β^-)1 charge states)

2013So17: ¹¹⁸Tc isotope produced in ⁹Be(²³⁸U,X) reaction at 345 MeV/nucleon at RIBF-RIKEN facility. Fragments identified by Zero-degree spectrometer which analyzed events based on Bρ-tof-ΔE. Measured Eγ, Iγ, Eβ, (fragment)γ-coin, βγ-coin, γγ-coin

2015Lo04: ¹¹⁸Tc nuclide produced at RIBF-RIKEN facility in ⁹Be(²³⁸U,F) reaction at E=345 MeV/nucleon with an average intensity of 6×10¹⁰ ions/s. Identification of ¹¹⁸Tc 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. The separated nuclei were implanted at a rate of 50 ions/s in a stack of eight double-sided silicon-strip detector (WAS3ABi), surrounded by EURICA array of 84 HPGe detectors. Correlations were recorded between the implanted ions and β rays. The half-life of ¹¹⁸Tc isotope was measured from the correlated ion-β decay curves and maximum likelihood analysis technique. Comparison of measured half-lives with FRDM+QRPA, KTUY+GT2 and DF3⁺CQRPA theoretical calculations

Production cross sections and yields of ¹¹⁸Tc:

2021Su01: measured production cross section in ⁹Be(²³⁸U,F), E=345 MeV/nucleon at RIBF-RIKEN facility.

2020Su23: measured production cross section in ⁹Be(¹³²Sn,X), E=278 MeV/nucleon at RIBF-RIKEN facility.

2019Pe09: measured production σ in ²⁰⁸Pb(²³⁸U,F), E=950 MeV/nucleon at GSI facility.

Theoretical calculations: two primary reference for half-lives and decay mode from the NSR database available at www.nndc.bnl.gov/nsr/ are listed in the ’document’ records in this dataset.

Q-value: Estimated uncertainties (2021Wa16): 450 for Q(β^-), 570 for S(n), 640 for S(p) and Q(α)

Q-value: S(2n)=8220 500, S(2p)=32640 500, Q(β^-n)=8130 590 (syst, 2021Wa16).

Q-value: Q(β^-2n)=4637 400, deduced by evaluator from mass excesses in 2021Wa16