Average charge states of heavy ions in rarefied hydrogen

Yu Ts Oganessian; V. K. Utyonkov; D. I. Solovyev; F. Sh Abdullin; S. N. Dmitriev; D. Ibadullayev; M. G. Itkis; N. D. Kovrizhnykh; D. A. Kuznetsov; O. V. Petrushkin; A. V. Podshibiakin; A. N. Polyakov; A. G. Popeko; R. N. Sagaidak; L. Schlattauer; V. D. Shubin; M. V. Shumeiko; Yu S. Tsyganov; A. A. Voinov; V. G. Subbotin; A. Yu Bodrov; A. V. Sabel'nikov; K. P. Rykaczewski; T. T. King; J. B. Roberto; N. T. Brewer; R. K. Grzywacz; Z. G. Gan; Z. Y. Zhang; M. H. Huang; H. B. Yang

doi:10.1016/j.nima.2022.167978

Average charge states of heavy ions in rarefied hydrogen

Yu Ts Oganessian, V. K. Utyonkov, D. I. Solovyev, F. Sh Abdullin, S. N. Dmitriev, D. Ibadullayev, M. G. Itkis, N. D. Kovrizhnykh, D. A. Kuznetsov, O. V. Petrushkin, A. V. Podshibiakin, A. N. Polyakov, A. G. Popeko, R. N. Sagaidak, L. Schlattauer, V. D. Shubin, M. V. Shumeiko, Yu S. Tsyganov, A. A. Voinov, V. G. SubbotinA. Yu Bodrov, A. V. Sabel'nikov, K. P. Rykaczewski, T. T. King, J. B. Roberto, N. T. Brewer, R. K. Grzywacz, Z. G. Gan, Z. Y. Zhang, M. H. Huang, H. B. Yang

Nuclear Structure and Nuclear Astrophysi

Research output: Contribution to journal › Article › peer-review

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Abstract

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.

Original language	English
Article number	167978
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1048
DOIs	https://doi.org/10.1016/j.nima.2022.167978
State	Published - Mar 2023

Funding

We express our thanks to N. S. Gustova, M. Voronyuk, and T. P. Drobina, for their help in preparing and carrying out the experiments. We thank the personnel operating the DC280 cyclotron and the associates of the ion-source group for obtaining 48 Ca beams. These studies were supported by the Ministry of Science and Higher Education of the Russian Federation through Grant No. 075-10-2020-117 and by the JINR Directorate grant . Research at ORNL was supported by the U.S. DOE Office of Nuclear Physics, USA under DOE Contract No. DE-AC05-00OR22725 with UT Battelle, LLC. This work was also supported by the Strategic Priority Research Program of Chinese Academy of Sciences, China (Grant No. XDB34010000 ).

Funders	Funder number
U.S. DOE Office of Nuclear Physics
U.S. Department of Energy	DE-AC05-00OR22725
Chinese Academy of Sciences	XDB34010000
Ministry of Education and Science of the Russian Federation	075-10-2020-117
Joint Institute for Nuclear Research

Keywords

Average charge state
Gas-filled separator
Superheavy elements

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10.1016/j.nima.2022.167978

Cite this

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., ... Yang, H. B. (2023). Average charge states of heavy ions in rarefied hydrogen. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1048, Article 167978. https://doi.org/10.1016/j.nima.2022.167978

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title = "Average charge states of heavy ions in rarefied hydrogen",

abstract = "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.",

keywords = "Average charge state, Gas-filled separator, Superheavy elements",

author = "Oganessian, {Yu Ts} and Utyonkov, {V. K.} and Solovyev, {D. I.} and Abdullin, {F. Sh} and Dmitriev, {S. N.} and D. Ibadullayev and Itkis, {M. G.} and Kovrizhnykh, {N. D.} and Kuznetsov, {D. A.} and Petrushkin, {O. V.} and Podshibiakin, {A. V.} and Polyakov, {A. N.} and Popeko, {A. G.} and Sagaidak, {R. N.} and L. Schlattauer and Shubin, {V. D.} and Shumeiko, {M. V.} and Tsyganov, {Yu S.} and Voinov, {A. A.} and Subbotin, {V. G.} and Bodrov, {A. Yu} and Sabel'nikov, {A. V.} and Rykaczewski, {K. P.} and King, {T. T.} and Roberto, {J. B.} and Brewer, {N. T.} and Grzywacz, {R. K.} and Gan, {Z. G.} and Zhang, {Z. Y.} and Huang, {M. H.} and Yang, {H. B.}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2023",

month = mar,

doi = "10.1016/j.nima.2022.167978",

language = "English",

volume = "1048",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier",

}

Oganessian, YT, Utyonkov, VK, Solovyev, DI, Abdullin, FS, Dmitriev, SN, Ibadullayev, D, Itkis, MG, Kovrizhnykh, ND, Kuznetsov, DA, Petrushkin, OV, Podshibiakin, AV, Polyakov, AN, Popeko, AG, Sagaidak, RN, Schlattauer, L, Shubin, VD, Shumeiko, MV, Tsyganov, YS, Voinov, AA, Subbotin, VG, Bodrov, AY, Sabel'nikov, AV, Rykaczewski, KP, King, TT, Roberto, JB, Brewer, NT, Grzywacz, RK, Gan, ZG, Zhang, ZY, Huang, MH & Yang, HB 2023, 'Average charge states of heavy ions in rarefied hydrogen', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1048, 167978. https://doi.org/10.1016/j.nima.2022.167978

TY - JOUR

T1 - Average charge states of heavy ions in rarefied hydrogen

AU - Oganessian, Yu Ts

AU - Utyonkov, V. K.

AU - Solovyev, D. I.

AU - Abdullin, F. Sh

AU - Dmitriev, S. N.

AU - Ibadullayev, D.

AU - Itkis, M. G.

AU - Kovrizhnykh, N. D.

AU - Kuznetsov, D. A.

AU - Petrushkin, O. V.

AU - Podshibiakin, A. V.

AU - Polyakov, A. N.

AU - Popeko, A. G.

AU - Sagaidak, R. N.

AU - Schlattauer, L.

AU - Shubin, V. D.

AU - Shumeiko, M. V.

AU - Tsyganov, Yu S.

AU - Voinov, A. A.

AU - Subbotin, V. G.

AU - Bodrov, A. Yu

AU - Sabel'nikov, A. V.

AU - Rykaczewski, K. P.

AU - King, T. T.

AU - Roberto, J. B.

AU - Brewer, N. T.

AU - Grzywacz, R. K.

AU - Gan, Z. G.

AU - Zhang, Z. Y.

AU - Huang, M. H.

AU - Yang, H. B.

PY - 2023/3

Y1 - 2023/3

N2 - 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.

AB - 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.

KW - Average charge state

KW - Gas-filled separator

KW - Superheavy elements

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U2 - 10.1016/j.nima.2022.167978

DO - 10.1016/j.nima.2022.167978

M3 - Article

AN - SCOPUS:85145662570

SN - 0168-9002

VL - 1048

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 167978

ER -

Average charge states of heavy ions in rarefied hydrogen

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