Nuclear Data Sheets for A = 179

Baglin, Coral M.

doi:10.1016/j.nds.2009.01.001

Cited by 46 publications

(17 citation statements)

References 183 publications

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“…In the present work the α-decay branching ratios of 178 Hg (E α = 6429(3) keV, T 1/2 = 266.5(24) ms [1]) and 179 Hg (E α = 6288(5) keV, T 1/2 = 1.05(3) s [1]) have been determined. Only an approximate value of b α = 55(25)% has been reported previously for 179 Hg [2], while the value of b α = 70% for 178 Hg, tabulated in Evaluated Nuclear Structure Data File (ENSDF) [3], was based only on systematics [4].…”

Section: Introductionmentioning

confidence: 97%

Determination of α-decay branching ratios for 178, 179Hg

et al. 2012

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The neutron-deficient nuclides 182,183 Pb were produced at the Accelerator Laboratory of the University of Jyväskylä by bombarding a 107 Ag target with 78 Kr ions. The nuclei of interest were separated using the ritu gas-filled separator and their radioactive decays investigated using the great spectrometer. Correlating the α decays of these Pb isotopes with those of their respective Hg daughters allowed α-decay branching ratios of b α(178 Hg) = 89(4)% and bα(179 Hg) = 75(4)% to be deduced.

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Section: Introductionmentioning

confidence: 97%

Determination of α-decay branching ratios for 178, 179Hg

et al. 2012

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“…The DSSD strips were calibrated internally using the known α-particle energies of 176,179 Hg and 176 Pt, from Refs. [14][15][16], respectively (see Fig. 1).…”

Section: Methodsmentioning

confidence: 95%

Decay spectroscopy of Pb97182179 and evidence for a 9/2−

et al. 2017

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The very neutron-deficient isobars 179 Pb and 179 Tl have been produced using the fusion-evaporation reactions 104 Pd( 78 Kr,xpyn), where x 1 and y 2. The gas-filled separator RITU was employed to transport and separate the recoiling nuclei of interest from the scattered beam and unwanted products. The GREAT spectrometer was used to study the decay properties through α-α and α-γ correlations, which has allowed the ground state of 179 Pb to be assigned as I π = 9/2 − . The decay of 179 Pb was measured to have an α-particle energy and half-life of E α = 7348(5) keV and t 1/2 = 2.7(2) ms, respectively. A search for a νi 13/2 state in 179 Pb was performed, but only a limit of excitation energy and half-life was obtained. In 179 Tl a t 1/2 = 114 +18 −10 ns isomeric state, likely at an excitation energy of 904.5(9) keV, was identified and is tentatively assigned to be a 9/2 − proton intruder state.

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“…The amplifier gain of both horizontal and vertical strips of the DSSDs were set to measure α-particle energies and calibrated internally using the known α-particle energies of 176,179 Hg and 176 Pt, from Refs. [12][13][14], respectively. A 700 μg/cm 2 degrader of aluminized mylar was positioned between the DSSDs and MWPC to reduce scattered beamlike products in the implantation detectors.…”

Section: Methodsmentioning

confidence: 99%

Confirmation of the new isotope Pb178

et al. 2016

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The extremely neutron-deficient isotope 178 Pb has been produced. The GREAT spectrometer at the focal plane position of the gas-filled separator RITU was used to study the α decay of 178 Pb and its α-decay chain through α-α correlations. The α decay was measured to have an energy and half-life of E α = 7610(30) keV and t 1/2 = 0.21−0.08 ms, respectively. The half-life is consistent with recent theoretical calculations using the Coulomb and proximity potential model. The α-decay reduced width and hindrance factor for 178 Pb were deduced and correspond to an unhindered l = 0 transition. In addition, the mass excess of 178 Pb and the α-decay Q value were calculated from the experimental results and compared to theoretical values.

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Nuclear Data Sheets for A = 179

Cited by 46 publications

References 183 publications

Determination of α-decay branching ratios for 178, 179Hg

Determination of α-decay branching ratios for 178, 179Hg

Decay spectroscopy of Pb97182179 and evidence for a 9/2−

Confirmation of the new isotope Pb178

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