175AU 179TL A DECAY (1.40 MS) 2017Ba46,2002RO17,1998TO1425NDS 202511
175AU H TYP=FUL$AUT=Jin Wu$CIT=NDS 206, 1 (2025)$CUT=29-Oct-2024$
175AU c 2017Ba46: The {+179}Tl was produced through the fusion-evaporation
175AU2c reaction {+104}Pd({+78}Kr,p2n){+179}Tl, using a {+78}Kr{+15+} beam of
175AU3c 358 MeV impinging on a self-supporting rotating {+104}Pd target with
175AU4c a thickness and enrichment of 745 |mg/cm{+2} and 92.25%,
175AU5c respectively. The evaporation residues of interest were separated
175AU6c from beam and unwanted reaction products using the gas-filled
175AU7c separator RITU and transported to the focal plane, where the HPGe
175AU8c GREAT spectrometer is located to detect the emitted |g rays. The
175AU9c isotopes of interest were implanted into a 300-|mm-thick double-sided
175AUac silicon strip detectors (DSSDs) placed in the center of the GRETA
175AUbc spectrometer, in which the decay products of |a particles were
175AUcc detected. Measured E|g, E|a, T{-1/2}.
175AU c 2013An10,2010An01: The {+179}Tl was produced in two reactions. First
175AU2c reaction E(p)=1.4 GeV at ISOLDE-CERN, using a target of 50 g/cm{+2}
175AU3c {+238}U. The {+179}Tl was ionized to 1+ charge by the Resonance
175AU4c Ionization Laser Ion Source (RILIS) and mass separated by the High
175AU5c Resolution (HRS) and General Purpose (GPS) Separators. Second
175AU6c reaction E({+40}Ca)=232 MeV provided by the UNILAC of GSI, using a
175AU7c target of |?350 |mg/cm{+2} {+144}Sm, separated by the velocity filter
175AU8c SHIP at GSI. Measured E|g, I|g, E|a, I|a, T{-1/2}, yield using a
175AU9c single Miniball Ge cluster and a DSSD. Deduced J, |p, |a branching
175AUac ratio.
175AU c 2002Ro17: The parent {+179}Tl was produced using a projectile of
175AU2c {+78}Kr at E=355 MeV (340 MeV at midtarget) bombarding a target of
175AU3c 90.4% enriched {+202}Pb. The recoil residues were transported to a
175AU4c gas-filled separator and parallel-plate avalanche counters, finally
175AU5c implanted into a Si strip detector. The emitted |g rays were detected
175AU6c with the HPGe detector. Deduced T{-1/2}, corrected for random
175AU7c correlation rates.
175AU c 1998To14: The parent {+179}Tl was produced using a projectile of
175AU2c {+92}Mo at E=420 MeV (404 MeV at midtarget) bombarding a target of
175AU3c {+90}Zr. The recoil residues were transported to a gas-filled
175AU4c separator and parallel-plate avalanche counters, finally implanted
175AU5c into a double sided Si strip detector with 40 in horizontal and 40 in
175AU6c vertical. Measured: E|a, t, I|a.
175AU c 1996Pa01: The parent {+179}Tl was produced from heavy-ion
175AU2c fusion-evaporation reactions. The recoil residues were transported to
175AU3c a mass separator and implanted into a double-sided Si strip detector
175AU4c (FWHM|<20 keV). Measured E|a, parent and daughter T{-1/2}.
175AU c 1983Sc24: The parent {+179}Tl was produced using a projectile of
175AU2c {+92}Mo at E=414-497 MeV bombarding a target of enriched (>95%) Rb-Mo
175AU3c isotopes. The recoil residues were implanted into an array of seven
175AU4c position surface Si detectors. The emitted |g rays were detected with
175AU5c the HPGe detector. Measured E|a, I|a.
175AU cA IA$Normalized from 1998To14 values.
179TL P 0.0+X (11/2-) 1.40 MS 3 6709.1 26
179TL cP T$: from 2017Ba46. Others: 1.46 ms {i4} (2010An01), 1.7 ms {I2}
179TL2cP (2002Ro17), 1.8 ms {I4} from E|a=7213 and 1.6 ms {I8} from E|a=7096
179TL3cP (1998To14), 0.7 ms {I+6-4} (1996Pa01), and 1.4 ms {I5} (1983Sc24).
179TL cP QP$From 2021Wa16
175AU N 1.0
175AU cN BR$%|a=100 (2010An01).
175AU A 7096 1020 8 ?
175AU cA E$Observed only in 1998To14. An expected level of 116 keV above the
175AU2cA (11/2-) state at (0.0+x) keV level, calculated from the 7209|a and
175AU3cA 7096|a energy difference, has not been observed in {+175}Au level
175AU4cA scheme (2001Ko44).
175AU L 0.0+X (11/2-) 137 MS 1
175AU cL J$From adopted levels.
175AU cL E$It seems that 6568|a is a g.s. to g.s. transition from {+179}Tl
175AU2cL (0.23 s) to {+175}Au, and the observed 7069|a and 7213|a 's are from
175AU3cL 0.0+x to 0.0+x state transitions between {+179}Tl(1.4 ms) and
175AU4cL {+175}Au (1998To14). The 1/2+ g.s. and 11/2- isomeric state, from
175AU5cL systematics and experiment, for these isotopes also looks reasonable
175AU6cL for these transitions with low HF values.
175AU cL T$from Adopted Levels. 138 ms {i5} by 2010An01
175AU A 7207 4 80 8
175AU cA E$Weighted average of 7206 {i4} (2017Ba46), 7207 {i5} (2010An01),
175AU2cA 7213 {I10} (1998To14), 7201 {I20} (1996Pa01), and 7200 {I20}
175AU3cA (1983Sc24).