Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination

D. Wittwer; F. Sh Abdullin; N. V. Aksenov; Yu V. Albin; G. A. Bozhikov; S. N. Dmitriev; R. Dressler; R. Eichler; H. W. Gäggeler; R. A. Henderson; S. Hübener; J. M. Kenneally; V. Ya Lebedev; Yu V. Lobanov; K. J. Moody; Yu Ts Oganessian; O. V. Petrushkin; A. N. Polyakov; D. Piguet; P. Rasmussen; R. N. Sagaidak; A. Serov; I. V. Shirokovsky; D. A. Shaughnessy; S. V. Shishkin; A. M. Sukhov; M. A. Stoyer; N. J. Stoyer; E. E. Tereshatov; Yu S. Tsyganov; V. K. Utyonkov; G. K. Vostokin; M. Wegrzecki; P. A. Wilk

doi:10.1016/j.nimb.2009.09.062

Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination

D. Wittwer, F. Sh Abdullin, N. V. Aksenov, Yu V. Albin, G. A. Bozhikov, S. N. Dmitriev, R. Dressler, R. Eichler, H. W. Gäggeler, R. A. Henderson, S. Hübener, J. M. Kenneally, V. Ya Lebedev, Yu V. Lobanov, K. J. Moody, Yu Ts Oganessian, O. V. Petrushkin, A. N. Polyakov, D. Piguet, P. RasmussenR. N. Sagaidak, A. Serov, I. V. Shirokovsky, D. A. Shaughnessy, S. V. Shishkin, A. M. Sukhov, M. A. Stoyer, N. J. Stoyer, E. E. Tereshatov, Yu S. Tsyganov, V. K. Utyonkov, G. K. Vostokin, M. Wegrzecki, P. A. Wilk

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

46 Scopus citations

Abstract

Currently, gas phase chemistry experiments with heaviest elements are usually performed with the gas-jet technique with the disadvantage that all reaction products are collected in a gas-filled thermalisation chamber adjacent to the target. The incorporation of a physical preseparation device between target and collection chamber opens up the perspective to perform new chemical studies. But this approach requires detailed knowledge of the stopping force (STF) of the heaviest elements in various materials. Measurements of the energy loss of mercury (Hg), radon (Rn), and nobelium (No) in Mylar and argon (Ar) were performed at low kinetic energies of around (40-270) keV per nucleon. The experimentally obtained values were compared with STF calculations of the commonly used program for calculating stopping and ranges of ions in matter (SRIM). Using the obtained data points an extrapolation of the STF up to element 114, eka-lead, in the same stopping media was carried out. These estimations were applied to design and to perform a first chemical experiment with a superheavy element behind a physical preseparator using the nuclear fusion reaction ²⁴⁴Pu(⁴⁸Ca; 3n)²⁸⁹114. One decay chain assigned to an atom of ²⁸⁵112, the α-decay product of ²⁸⁹114, was observed.

Original language	English
Pages (from-to)	28-35
Number of pages	8
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	268
Issue number	1
DOIs	https://doi.org/10.1016/j.nimb.2009.09.062
State	Published - Jan 1 2010
Externally published	Yes

Funding

We thank the staff of the U-400 cyclotron for providing intense beams of 48 Ca. The 244 Pu target material was provided by the U.S. DOE through ORNL, Oak Ridge, USA. The LLNL work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory (contract: DE-AC52-07NA27344). This work was supported in part by the Russian Foundation for Basic Research (Grants: 07-03-00430-a , 07-02-00029-a ) and by the Swiss National Science Foundation (Grant: 200020-117671/1 ).

Funders	Funder number
U.S. Department of Energy
Lawrence Livermore National Laboratory	DE-AC52-07NA27344
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	200020-117671/1
Russian Foundation for Basic Research	07-02-00029-a, 07-03-00430-a

Keywords

Argon
Heavy ion
Mylar
Physical preseparator
Stopping force
Superheavy elements

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.nimb.2009.09.062

Cite this

Wittwer, D., Abdullin, F. S., Aksenov, N. V., Albin, Y. V., Bozhikov, G. A., Dmitriev, S. N., Dressler, R., Eichler, R., Gäggeler, H. W., Henderson, R. A., Hübener, S., Kenneally, J. M., Lebedev, V. Y., Lobanov, Y. V., Moody, K. J., Oganessian, Y. T., Petrushkin, O. V., Polyakov, A. N., Piguet, D., ... Wilk, P. A. (2010). Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 268(1), 28-35. https://doi.org/10.1016/j.nimb.2009.09.062

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title = "Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination",

abstract = "Currently, gas phase chemistry experiments with heaviest elements are usually performed with the gas-jet technique with the disadvantage that all reaction products are collected in a gas-filled thermalisation chamber adjacent to the target. The incorporation of a physical preseparation device between target and collection chamber opens up the perspective to perform new chemical studies. But this approach requires detailed knowledge of the stopping force (STF) of the heaviest elements in various materials. Measurements of the energy loss of mercury (Hg), radon (Rn), and nobelium (No) in Mylar and argon (Ar) were performed at low kinetic energies of around (40-270) keV per nucleon. The experimentally obtained values were compared with STF calculations of the commonly used program for calculating stopping and ranges of ions in matter (SRIM). Using the obtained data points an extrapolation of the STF up to element 114, eka-lead, in the same stopping media was carried out. These estimations were applied to design and to perform a first chemical experiment with a superheavy element behind a physical preseparator using the nuclear fusion reaction 244Pu(48Ca; 3n)289114. One decay chain assigned to an atom of 285112, the α-decay product of 289114, was observed.",

keywords = "Argon, Heavy ion, Mylar, Physical preseparator, Stopping force, Superheavy elements",

author = "D. Wittwer and Abdullin, {F. Sh} and Aksenov, {N. V.} and Albin, {Yu V.} and Bozhikov, {G. A.} and Dmitriev, {S. N.} and R. Dressler and R. Eichler and G{\"a}ggeler, {H. W.} and Henderson, {R. A.} and S. H{\"u}bener and Kenneally, {J. M.} and Lebedev, {V. Ya} and Lobanov, {Yu V.} and Moody, {K. J.} and Oganessian, {Yu Ts} and Petrushkin, {O. V.} and Polyakov, {A. N.} and D. Piguet and P. Rasmussen and Sagaidak, {R. N.} and A. Serov and Shirokovsky, {I. V.} and Shaughnessy, {D. A.} and Shishkin, {S. V.} and Sukhov, {A. M.} and Stoyer, {M. A.} and Stoyer, {N. J.} and Tereshatov, {E. E.} and Tsyganov, {Yu S.} and Utyonkov, {V. K.} and Vostokin, {G. K.} and M. Wegrzecki and Wilk, {P. A.}",

year = "2010",

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day = "1",

doi = "10.1016/j.nimb.2009.09.062",

language = "English",

volume = "268",

pages = "28--35",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

issn = "0168-583X",

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Wittwer, D, Abdullin, FS, Aksenov, NV, Albin, YV, Bozhikov, GA, Dmitriev, SN, Dressler, R, Eichler, R, Gäggeler, HW, Henderson, RA, Hübener, S, Kenneally, JM, Lebedev, VY, Lobanov, YV, Moody, KJ, Oganessian, YT, Petrushkin, OV, Polyakov, AN, Piguet, D, Rasmussen, P, Sagaidak, RN, Serov, A, Shirokovsky, IV, Shaughnessy, DA, Shishkin, SV, Sukhov, AM, Stoyer, MA, Stoyer, NJ, Tereshatov, EE, Tsyganov, YS, Utyonkov, VK, Vostokin, GK, Wegrzecki, M & Wilk, PA 2010, 'Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 268, no. 1, pp. 28-35. https://doi.org/10.1016/j.nimb.2009.09.062

Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination. / Wittwer, D.; Abdullin, F. Sh; Aksenov, N. V. et al.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 268, No. 1, 01.01.2010, p. 28-35.

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

TY - JOUR

T1 - Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination

AU - Wittwer, D.

AU - Abdullin, F. Sh

AU - Aksenov, N. V.

AU - Albin, Yu V.

AU - Bozhikov, G. A.

AU - Dmitriev, S. N.

AU - Dressler, R.

AU - Eichler, R.

AU - Gäggeler, H. W.

AU - Henderson, R. A.

AU - Hübener, S.

AU - Kenneally, J. M.

AU - Lebedev, V. Ya

AU - Lobanov, Yu V.

AU - Moody, K. J.

AU - Oganessian, Yu Ts

AU - Petrushkin, O. V.

AU - Polyakov, A. N.

AU - Piguet, D.

AU - Rasmussen, P.

AU - Sagaidak, R. N.

AU - Serov, A.

AU - Shirokovsky, I. V.

AU - Shaughnessy, D. A.

AU - Shishkin, S. V.

AU - Sukhov, A. M.

AU - Stoyer, M. A.

AU - Stoyer, N. J.

AU - Tereshatov, E. E.

AU - Tsyganov, Yu S.

AU - Utyonkov, V. K.

AU - Vostokin, G. K.

AU - Wegrzecki, M.

AU - Wilk, P. A.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - Currently, gas phase chemistry experiments with heaviest elements are usually performed with the gas-jet technique with the disadvantage that all reaction products are collected in a gas-filled thermalisation chamber adjacent to the target. The incorporation of a physical preseparation device between target and collection chamber opens up the perspective to perform new chemical studies. But this approach requires detailed knowledge of the stopping force (STF) of the heaviest elements in various materials. Measurements of the energy loss of mercury (Hg), radon (Rn), and nobelium (No) in Mylar and argon (Ar) were performed at low kinetic energies of around (40-270) keV per nucleon. The experimentally obtained values were compared with STF calculations of the commonly used program for calculating stopping and ranges of ions in matter (SRIM). Using the obtained data points an extrapolation of the STF up to element 114, eka-lead, in the same stopping media was carried out. These estimations were applied to design and to perform a first chemical experiment with a superheavy element behind a physical preseparator using the nuclear fusion reaction 244Pu(48Ca; 3n)289114. One decay chain assigned to an atom of 285112, the α-decay product of 289114, was observed.

AB - Currently, gas phase chemistry experiments with heaviest elements are usually performed with the gas-jet technique with the disadvantage that all reaction products are collected in a gas-filled thermalisation chamber adjacent to the target. The incorporation of a physical preseparation device between target and collection chamber opens up the perspective to perform new chemical studies. But this approach requires detailed knowledge of the stopping force (STF) of the heaviest elements in various materials. Measurements of the energy loss of mercury (Hg), radon (Rn), and nobelium (No) in Mylar and argon (Ar) were performed at low kinetic energies of around (40-270) keV per nucleon. The experimentally obtained values were compared with STF calculations of the commonly used program for calculating stopping and ranges of ions in matter (SRIM). Using the obtained data points an extrapolation of the STF up to element 114, eka-lead, in the same stopping media was carried out. These estimations were applied to design and to perform a first chemical experiment with a superheavy element behind a physical preseparator using the nuclear fusion reaction 244Pu(48Ca; 3n)289114. One decay chain assigned to an atom of 285112, the α-decay product of 289114, was observed.

KW - Argon

KW - Heavy ion

KW - Mylar

KW - Physical preseparator

KW - Stopping force

KW - Superheavy elements

UR - http://www.scopus.com/inward/record.url?scp=71649093089&partnerID=8YFLogxK

U2 - 10.1016/j.nimb.2009.09.062

DO - 10.1016/j.nimb.2009.09.062

M3 - Article

AN - SCOPUS:71649093089

SN - 0168-583X

VL - 268

SP - 28

EP - 35

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1

ER -

Gas phase chemical studies of superheavy elements using the Dubna gas-filled recoil separator - Stopping range determination

Abstract

Funding

Keywords

UN SDGs

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