Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca 48 beam

N. T. Brewer; V. K. Utyonkov; K. P. Rykaczewski; Yu Ts Oganessian; F. Sh Abdullin; R. A. Boll; D. J. Dean; S. N. Dmitriev; J. G. Ezold; L. K. Felker; R. K. Grzywacz; M. G. Itkis; N. D. Kovrizhnykh; D. C. McInturff; K. Miernik; G. D. Owen; A. N. Polyakov; A. G. Popeko; J. B. Roberto; A. V. Sabel'Nikov; R. N. Sagaidak; I. V. Shirokovsky; M. V. Shumeiko; N. J. Sims; E. H. Smith; V. G. Subbotin; A. M. Sukhov; A. I. Svirikhin; Yu S. Tsyganov; S. M. Van Cleve; A. A. Voinov; G. K. Vostokin; C. S. White; J. H. Hamilton; M. A. Stoyer

doi:10.1103/PhysRevC.98.024317

Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca 48 beam

N. T. Brewer, V. K. Utyonkov, K. P. Rykaczewski, Yu Ts Oganessian, F. Sh Abdullin, R. A. Boll, D. J. Dean, S. N. Dmitriev, J. G. Ezold, L. K. Felker, R. K. Grzywacz, M. G. Itkis, N. D. Kovrizhnykh, D. C. McInturff, K. Miernik, G. D. Owen, A. N. Polyakov, A. G. Popeko, J. B. Roberto, A. V. Sabel'NikovR. N. Sagaidak, I. V. Shirokovsky, M. V. Shumeiko, N. J. Sims, E. H. Smith, V. G. Subbotin, A. M. Sukhov, A. I. Svirikhin, Yu S. Tsyganov, S. M. Van Cleve, A. A. Voinov, G. K. Vostokin, C. S. White, J. H. Hamilton, M. A. Stoyer

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Abstract

The search for new decay chains of oganesson isotopes is presented. The experiment utilized the Dubna Gas Filled Recoil Separator and a highly segmented recoil-decay detection system. The signals from all detectors were analyzed in parallel by digital and analog data acquisition systems. For the first time, a target of mixed californium (51% Cf249, 13% Cf250, and 36% Cf251) recovered from decayed Cf252 sources was produced and irradiated with an intense Ca48 beam. The observation of a new decay chain of Og294 is reported. The prospects for reaching new isotopes Og295,296 are discussed.

Original language	English
Article number	024317
Journal	Physical Review C
Volume	98
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.98.024317
State	Published - Aug 24 2018

Funding

We especially thank the personnel operating the U400 cyclotron, the associates of the ion-source group for obtaining intense Ca 48 beams and the REDC operators and technicians. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Nuclear Physics and Isotope Programs, under contract number DE-AC05-00OR22725 with UT Battelle, LLC and the Russian Foundation for Basic Research Grant No. 16-52-55002. Research is further supported by LDRD Program Project No. 08-ERD-030 and DOE Contract No, DE-AC52-07NA27344 with Lawrence Livermore National Security, LLC for research done at LLNL and by the US DOE through Grant No. DE-FG-05-88ER40407 for contributions from Vanderbilt University.

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Brewer, N. T., Utyonkov, V. K., Rykaczewski, K. P., Oganessian, Y. T., Abdullin, F. S., Boll, R. A., Dean, D. J., Dmitriev, S. N., Ezold, J. G., Felker, L. K., Grzywacz, R. K., Itkis, M. G., Kovrizhnykh, N. D., McInturff, D. C., Miernik, K., Owen, G. D., Polyakov, A. N., Popeko, A. G., Roberto, J. B., ... Stoyer, M. A. (2018). Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca 48 beam. Physical Review C, 98(2), Article 024317. https://doi.org/10.1103/PhysRevC.98.024317

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title = "Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca 48 beam",

abstract = "The search for new decay chains of oganesson isotopes is presented. The experiment utilized the Dubna Gas Filled Recoil Separator and a highly segmented recoil-decay detection system. The signals from all detectors were analyzed in parallel by digital and analog data acquisition systems. For the first time, a target of mixed californium (51% Cf249, 13% Cf250, and 36% Cf251) recovered from decayed Cf252 sources was produced and irradiated with an intense Ca48 beam. The observation of a new decay chain of Og294 is reported. The prospects for reaching new isotopes Og295,296 are discussed.",

author = "Brewer, {N. T.} and Utyonkov, {V. K.} and Rykaczewski, {K. P.} and Oganessian, {Yu Ts} and Abdullin, {F. Sh} and Boll, {R. A.} and Dean, {D. J.} and Dmitriev, {S. N.} and Ezold, {J. G.} and Felker, {L. K.} and Grzywacz, {R. K.} and Itkis, {M. G.} and Kovrizhnykh, {N. D.} and McInturff, {D. C.} and K. Miernik and Owen, {G. D.} and Polyakov, {A. N.} and Popeko, {A. G.} and Roberto, {J. B.} and Sabel'Nikov, {A. V.} and Sagaidak, {R. N.} and Shirokovsky, {I. V.} and Shumeiko, {M. V.} and Sims, {N. J.} and Smith, {E. H.} and Subbotin, {V. G.} and Sukhov, {A. M.} and Svirikhin, {A. I.} and Tsyganov, {Yu S.} and {Van Cleve}, {S. M.} and Voinov, {A. A.} and Vostokin, {G. K.} and White, {C. S.} and Hamilton, {J. H.} and Stoyer, {M. A.}",

note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = aug,

day = "24",

doi = "10.1103/PhysRevC.98.024317",

language = "English",

volume = "98",

journal = "Physical Review C",

issn = "2469-9985",

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Brewer, NT, Utyonkov, VK, Rykaczewski, KP, Oganessian, YT, Abdullin, FS, Boll, RA, Dean, DJ, Dmitriev, SN, Ezold, JG, Felker, LK, Grzywacz, RK, Itkis, MG, Kovrizhnykh, ND, McInturff, DC, Miernik, K, Owen, GD, Polyakov, AN, Popeko, AG, Roberto, JB, Sabel'Nikov, AV, Sagaidak, RN, Shirokovsky, IV, Shumeiko, MV, Sims, NJ, Smith, EH, Subbotin, VG, Sukhov, AM, Svirikhin, AI, Tsyganov, YS, Van Cleve, SM, Voinov, AA, Vostokin, GK, White, CS, Hamilton, JH & Stoyer, MA 2018, 'Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca 48 beam', Physical Review C, vol. 98, no. 2, 024317. https://doi.org/10.1103/PhysRevC.98.024317

TY - JOUR

T1 - Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca 48 beam

AU - Brewer, N. T.

AU - Utyonkov, V. K.

AU - Rykaczewski, K. P.

AU - Oganessian, Yu Ts

AU - Abdullin, F. Sh

AU - Boll, R. A.

AU - Dean, D. J.

AU - Dmitriev, S. N.

AU - Ezold, J. G.

AU - Felker, L. K.

AU - Grzywacz, R. K.

AU - Itkis, M. G.

AU - Kovrizhnykh, N. D.

AU - McInturff, D. C.

AU - Miernik, K.

AU - Owen, G. D.

AU - Polyakov, A. N.

AU - Popeko, A. G.

AU - Roberto, J. B.

AU - Sabel'Nikov, A. V.

AU - Sagaidak, R. N.

AU - Shirokovsky, I. V.

AU - Shumeiko, M. V.

AU - Sims, N. J.

AU - Smith, E. H.

AU - Subbotin, V. G.

AU - Sukhov, A. M.

AU - Svirikhin, A. I.

AU - Tsyganov, Yu S.

AU - Van Cleve, S. M.

AU - Voinov, A. A.

AU - Vostokin, G. K.

AU - White, C. S.

AU - Hamilton, J. H.

AU - Stoyer, M. A.

PY - 2018/8/24

Y1 - 2018/8/24

N2 - The search for new decay chains of oganesson isotopes is presented. The experiment utilized the Dubna Gas Filled Recoil Separator and a highly segmented recoil-decay detection system. The signals from all detectors were analyzed in parallel by digital and analog data acquisition systems. For the first time, a target of mixed californium (51% Cf249, 13% Cf250, and 36% Cf251) recovered from decayed Cf252 sources was produced and irradiated with an intense Ca48 beam. The observation of a new decay chain of Og294 is reported. The prospects for reaching new isotopes Og295,296 are discussed.

AB - The search for new decay chains of oganesson isotopes is presented. The experiment utilized the Dubna Gas Filled Recoil Separator and a highly segmented recoil-decay detection system. The signals from all detectors were analyzed in parallel by digital and analog data acquisition systems. For the first time, a target of mixed californium (51% Cf249, 13% Cf250, and 36% Cf251) recovered from decayed Cf252 sources was produced and irradiated with an intense Ca48 beam. The observation of a new decay chain of Og294 is reported. The prospects for reaching new isotopes Og295,296 are discussed.

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U2 - 10.1103/PhysRevC.98.024317

DO - 10.1103/PhysRevC.98.024317

M3 - Article

AN - SCOPUS:85052734017

SN - 2469-9985

VL - 98

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024317

ER -

Search for the heaviest atomic nuclei among the products from reactions of mixed-Cf with a Ca 48 beam

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