Low-lying states in Ra219 and Rn215: Sampling microsecond α-decaying nuclei

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

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.

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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