Low-lying states in 219Ra and 215Rn: Sampling microsecond α-decaying nuclei

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Short-lived α-decaying nuclei "northeast" of 208Pb in the chart of nuclides were studied using the reaction 48Ca+243Am 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 220Ra and its odd-A neighbors, 219Fr, and 219,221Ra, with a focus on the 219Ra→215Rn decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of 219Ra 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.

Detaljer

Författare
  • D. Ackermann
  • L. L. Andersson
  • M. Block
  • H. Brand
  • A. Di Nitto
  • Ch E. Düllmann
  • K. Eberhardt
  • J. Even
  • J. M. Gates
  • J. Gerl
  • K. E. Gregorich
  • C. J. Gross
  • R. D. Herzberg
  • F. P. Heßberger
  • E. Jäger
  • J. Khuyagbaatar
  • B. Kindler
  • I. Kojouharov
  • J. V. Kratz
  • J. Krier
  • N. Kurz
  • B. Lommel
  • A. Mistry
  • C. Mokry
  • J. P. Omtvedt
  • P. Papadakis
  • J. Runke
  • K. Rykaczewski
  • M. Schädel
  • H. Schaffner
  • B. Schausten
  • P. Thörle-Pospiech
  • N. Trautmann
  • T. Torres
  • A. Türler
  • A. Ward
  • N. Wiehl
  • A. Yakushev
Enheter & grupper
Externa organisationer
  • GSI Helmholtz Centre for Heavy Ion Research
  • GANIL Grand Accelerateur National d'Ions Lourds
  • Helmholtz Institute Mainz
  • University of Mainz
  • University of Liverpool
  • Lawrence Berkeley National Laboratory
  • Oak Ridge National Laboratory
  • University of Oslo
  • University of Bern
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik

Nyckelord

Originalspråkengelska
Artikelnummer044307
Antal sidor11
TidskriftPhysical Review C
Volym98
Utgivningsnummer4
StatusPublished - 2018 okt 9
PublikationskategoriForskning
Peer review utfördJa

Nedladdningar

Ingen tillgänglig data

Relaterad forskningsoutput

Khuyagbaatar, J., Yakushev, A., Düllmann, C. E., Ackermann, D., Andersson, L-L., Block, M., Brand, H., Cox, D. M., Even, J., Forsberg, U., Golubev, P., Hartmann, W., Herzberg, R-D., Heßberger, F. P., Hoffmann, J., Hübner, A., Jäger, E., Jeppsson, J., Kindler, B., Kratz, J. V. & 19 andraKrier, J., Kurz, N., Lommel, B., Maiti, M., Minami, S., Mistry, A. K., Mrosek, C. M., Pysmenetska, I., Dirk Rudolph, Luis Sarmiento, Schaffner, H., Schädel, M., Schausten, B., Steiner, J., De Heidenreich, T. T., Uusitalo, J., Wegrzecki, M., Wiehl, N. & Yakusheva, V., 2015, I : Physical Review Letters. 115, 24, 4 s., 242502.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Rudolph, D., Forsberg, U., Golubev, P., Sarmiento, L., Yakushev, A., Andersson, L-L., Di Nitto, A., Düllmann, C. E., Gates, J. M., Gregorich, K. E., Gross, C. J., Heßberger, F. P., Herzberg, R-D., Khuyagbaatar, J., Kratz, J. V., Rykaczewski, K., Schädel, M., Åberg, S., Ackermann, D., Block, M. & 31 andraBrand, H., Gillis Carlsson, Cox, D., Derkx, X., Eberhardt, K., Even, J., Claes Fahlander, Gerl, J., Jäger, E., Kindler, B., Krier, J., Kojouharov, I., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Nitsche, H., Omtvedt, J. P., Papadakis, P., Ingemar Ragnarsson, Runke, J., Schaffner, H., Schausten, B., Thörle-Pospiech, P., Torres, T., Traut, T., Trautmann, N., Türler, A., Ward, A., Ward, D. & Wiehl, N., 2013, I : Physical Review Letters. 111, 11, 112502.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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