Average charge states of heavy ions in rarefied hydrogen
Oganessian Y.T. Utyonkov V.K. Solovyev D.I. Abdullin F.S. Dmitriev S.N. Ibadullayev D. Itkis M.G. Kovrizhnykh N.D. Kuznetsov D.A. Petrushkin O.V. Podshibiakin A.V. Polyakov A.N. Popeko A.G. Sagaidak R.N. Schlattauer L. Shubin V.D. Shumeiko M.V. Tsyganov Y.S. Voinov A.A. Subbotin V.G. Bodrov A.Y. Sabelnikov A.V. Rykaczewski K.P. King T.T. Roberto J.B. Brewer N.T. Grzywacz R.K. Gan Z.G. Zhang Z.Y. Huang M.H. Yang H.B.
March 2023Elsevier B.V.
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
2023#1048
We present the results of experiments on measuring the charges of heavy ions from Rn (Z=86) to Og (Z=118) in rarefied hydrogen performed at the DGFRS and DGFRS-2 separators. Two formulae are proposed that can be used to calculate the charges of ions in H2 and which take into account the influence of the shell structure of atoms on the charge value. The accuracy of estimating the charge of ions of superheavy atoms was measured to be 2%. The charges of Ra, Th, and No ions were measured at a hydrogen pressure from 0.5 to 3.3 mbar, which allowed us to evaluate the effect of H2 density on the charge value. A formula is proposed to account for the effect of gas density when performing experiments at different gas pressures. It is shown that the results of experiments performed at different separators DGFRS and DGFRS-2 are in good agreement with each other.
Average charge state , Gas-filled separator , Superheavy elements
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Joint Institute for Nuclear Research, RU, Dubna, 141980, Russian Federation
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Palacky University Olomouc, Department of Experimental Physics, Faculty of Science, Olomouc, 771 46, Czech Republic
Lomonosov Moscow State University, Department of Chemistry, Radiochemistry division, RU, Moscow, 119991, Russian Federation
Oak Ridge National Laboratory, Oak Ridge, 37831, TN, United States
Department of Physics and Astronomy, University of Tennessee, Knoxville, 37996, TN, United States
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
Joint Institute for Nuclear Research
Institute of Nuclear Physics
Palacky University Olomouc
Lomonosov Moscow State University
Oak Ridge National Laboratory
Department of Physics and Astronomy
Institute of Modern Physics
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