Low-lying states in and : Sampling microsecond -decaying nuclei
Abstract
© 2018 American Physical Society. Short-lived α-decaying nuclei "northeast" of Pb208 in the chart of nuclides were studied using the reaction Ca48+Am243 with the decay station TASISpec at TASCA, GSI Darmstadt. Decay energies and times from pile-up events were extracted with a tailor-made pulse-shape analysis routine and specific α-decay chains were identified in a correlation analysis. Decay chains starting with the even-even Ra220 and its odd-A neighbors, Fr219, and Ra221,219, with a focus on the Ra219→Rn215 decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of Ra219 is proposed, including a new decay branch from a previously not considered isomeric state at 17 keV excitation energy. Conclusions on nuclear structure are drawn from the experimental data, aided by Geant4 simulations and a discussion on theoretical calculations.
- Authors:
-
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- Lund Univ., Lund (Sweden)
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); GANIL, Caen (France)
- Helmholtz Inst. Mainz, Mainz (Germany)
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); Helmholtz Inst. Mainz, Mainz (Germany); Johannes Gutenberg-Univ. Mainz, Mainz (Germany)
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)
- Univ. of Liverpool, Liverpool (United Kingdom); Lund Univ., Lund (Sweden)
- Johannes Gutenberg-Univ. Mainz, Mainz (Germany)
- Helmholtz Inst. Mainz, Mainz (Germany); Johannes Gutenberg-Univ. Mainz, Mainz (Germany)
- Helmholtz Inst. Mainz, Mainz (Germany); Groningen, Groningen (Netherlands)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Liverpool, Liverpool (United Kingdom)
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); Helmholtz Inst. Mainz, Mainz (Germany)
- Univ. of Liverpool, Liverpool (United Kingdom); Helmholtz Inst. Mainz, Mainz (Germany)
- Univ. of Oslo, Oslo (Norway)
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany); Johannes Gutenberg-Univ. Mainz, Mainz (Germany)
- Paul Scherrer Inst. and Univ. of Bern, Villigen (Switzerland)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1571859
- Alternate Identifier(s):
- OSTI ID: 1477543; OSTI ID: 1650034
- Grant/Contract Number:
- AC05-00OR22725; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 98; Journal Issue: 4; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Såmark-Roth, A., Sarmiento, L. G., Rudolph, D., Ljungberg, J., Carlsson, B. G., Fahlander, C., Forsberg, U., Golubev, P., Ragnarsson, I., Ackermann, D., Andersson, L. -L., Block, M., Brand, H., Cox, D. M., Di Nitto, A., Düllmann, Ch. E., Eberhardt, K., Even, J., Gates, J. M., Gerl, J., Gregorich, K. E., Gross, C. J., Herzberg, R. -D., Heßberger, F. P., Jäger, E., Khuyagbaatar, J., Kindler, B., Kojouharov, I., Kratz, J. V., Krier, J., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Omtvedt, J. P., Papadakis, P., Runke, J., Rykaczewski, Krzysztof, Schädel, M., Schaffner, H., Schausten, B., Thörle-Pospiech, P., Trautmann, N., Torres, T., Türler, A., Ward, A., Wiehl, N., and Yakushev, A. Low-lying states in Ra219 and Rn215: Sampling microsecond α-decaying nuclei. United States: N. p., 2018.
Web. doi:10.1103/PhysRevC.98.044307.
Såmark-Roth, A., Sarmiento, L. G., Rudolph, D., Ljungberg, J., Carlsson, B. G., Fahlander, C., Forsberg, U., Golubev, P., Ragnarsson, I., Ackermann, D., Andersson, L. -L., Block, M., Brand, H., Cox, D. M., Di Nitto, A., Düllmann, Ch. E., Eberhardt, K., Even, J., Gates, J. M., Gerl, J., Gregorich, K. E., Gross, C. J., Herzberg, R. -D., Heßberger, F. P., Jäger, E., Khuyagbaatar, J., Kindler, B., Kojouharov, I., Kratz, J. V., Krier, J., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Omtvedt, J. P., Papadakis, P., Runke, J., Rykaczewski, Krzysztof, Schädel, M., Schaffner, H., Schausten, B., Thörle-Pospiech, P., Trautmann, N., Torres, T., Türler, A., Ward, A., Wiehl, N., & Yakushev, A. Low-lying states in Ra219 and Rn215: Sampling microsecond α-decaying nuclei. United States. https://doi.org/10.1103/PhysRevC.98.044307
Såmark-Roth, A., Sarmiento, L. G., Rudolph, D., Ljungberg, J., Carlsson, B. G., Fahlander, C., Forsberg, U., Golubev, P., Ragnarsson, I., Ackermann, D., Andersson, L. -L., Block, M., Brand, H., Cox, D. M., Di Nitto, A., Düllmann, Ch. E., Eberhardt, K., Even, J., Gates, J. M., Gerl, J., Gregorich, K. E., Gross, C. J., Herzberg, R. -D., Heßberger, F. P., Jäger, E., Khuyagbaatar, J., Kindler, B., Kojouharov, I., Kratz, J. V., Krier, J., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Omtvedt, J. P., Papadakis, P., Runke, J., Rykaczewski, Krzysztof, Schädel, M., Schaffner, H., Schausten, B., Thörle-Pospiech, P., Trautmann, N., Torres, T., Türler, A., Ward, A., Wiehl, N., and Yakushev, A. Tue .
"Low-lying states in Ra219 and Rn215: Sampling microsecond α-decaying nuclei". United States. https://doi.org/10.1103/PhysRevC.98.044307. https://www.osti.gov/servlets/purl/1571859.
@article{osti_1571859,
title = {Low-lying states in Ra219 and Rn215: Sampling microsecond α-decaying nuclei},
author = {Såmark-Roth, A. and Sarmiento, L. G. and Rudolph, D. and Ljungberg, J. and Carlsson, B. G. and Fahlander, C. and Forsberg, U. and Golubev, P. and Ragnarsson, I. and Ackermann, D. and Andersson, L. -L. and Block, M. and Brand, H. and Cox, D. M. and Di Nitto, A. and Düllmann, Ch. E. and Eberhardt, K. and Even, J. and Gates, J. M. and Gerl, J. and Gregorich, K. E. and Gross, C. J. and Herzberg, R. -D. and Heßberger, F. P. and Jäger, E. and Khuyagbaatar, J. and Kindler, B. and Kojouharov, I. and Kratz, J. V. and Krier, J. and Kurz, N. and Lommel, B. and Mistry, A. and Mokry, C. and Omtvedt, J. P. and Papadakis, P. and Runke, J. and Rykaczewski, Krzysztof and Schädel, M. and Schaffner, H. and Schausten, B. and Thörle-Pospiech, P. and Trautmann, N. and Torres, T. and Türler, A. and Ward, A. and Wiehl, N. and Yakushev, A.},
abstractNote = {© 2018 American Physical Society. Short-lived α-decaying nuclei "northeast" of Pb208 in the chart of nuclides were studied using the reaction Ca48+Am243 with the decay station TASISpec at TASCA, GSI Darmstadt. Decay energies and times from pile-up events were extracted with a tailor-made pulse-shape analysis routine and specific α-decay chains were identified in a correlation analysis. Decay chains starting with the even-even Ra220 and its odd-A neighbors, Fr219, and Ra221,219, with a focus on the Ra219→Rn215 decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of Ra219 is proposed, including a new decay branch from a previously not considered isomeric state at 17 keV excitation energy. Conclusions on nuclear structure are drawn from the experimental data, aided by Geant4 simulations and a discussion on theoretical calculations.},
doi = {10.1103/PhysRevC.98.044307},
journal = {Physical Review C},
number = 4,
volume = 98,
place = {United States},
year = {Tue Oct 09 00:00:00 EDT 2018},
month = {Tue Oct 09 00:00:00 EDT 2018}
}
Web of Science
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