Decay Spectroscopy of Element 115 Daughters: 280Rg -> 276Mt and 276Mt -> 272Bh

Research output: Contribution to journalArticle

Abstract

Forty-six decay chains, assigned to the decay of 288-115, were produced using the 243Am(48Ca,3n)288-115 reaction at the Lawrence Berkeley National Laboratory 88-in. cyclotron. The resulting series of α decays were studied using α-photon and α-x-ray spectroscopies. Multiple α-photon coincidences were observed in the element 115 decay chain members, particularly in the third- and fourth-generation decays (presumed to be 280Rg and 276Mt, respectively). Upon combining these data with those from 22 288-115 decay chains observed in a similar experiment, updated level schemes in 276Mt and 272Bh (populated by the α decay of 280Rg and 276Mt, respectively) are proposed. Photons were observed in the energy range expected for K x rays coincident with the α decay of both 280Rg and 276Mt. However, Compton scattering of higher-energy γ rays and discrete transitions are present in the K x-ray region preventing a definitive Z identification to be made based on observation of characteristic K x-ray energies.

Details

Authors
  • J. M. Gates
  • K. E. Gregorich
  • O. R. Gothe
  • E. C. Uribe
  • G. K. Pang
  • D. L. Bleuel
  • M. Block
  • R. M. Clark
  • C. M. Campbell
  • H. L. Crawford
  • M. Cromaz
  • A. Di Nitto
  • Ch. E. Düllmann
  • N. E. Esker
  • P. Fallon
  • R. M. Farjadi
  • J. Khuyagbaatar
  • W. Loveland
  • A. O. Macchiavelli
  • E. M. May
  • P. R. Mudder
  • D. T. Olive
  • A. C. Rice
  • J. Rissanen
  • J. A. Shusterman
  • M. A. Stoyer
  • A. Wiens
  • A. Yakushev
  • H. Nitsche
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics

Keywords

  • alpha decay, superheavy elements, element 115, gamma-ray spectroscopy
Original languageEnglish
Article number021301
Number of pages6
JournalPhysical Review C (Nuclear Physics)
Volume92
Issue number2
Publication statusPublished - 2015
Publication categoryResearch
Peer-reviewedYes

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Related research output

Forsberg, U., Rudolph, D., Andersson, L. L., Di Nitto, A., Düllmann, C. E., Fahlander, C., Gates, J. M., Golubev, P., Gregorich, K. E., Gross, C. J., Herzberg, R. D., Heßberger, F. P., Khuyagbaatar, J., Kratz, J. V., Rykaczewski, K., Sarmiento, L. G., Schädel, M., Yakushev, A., Åberg, S., Ackermann, D. & 34 othersBlock, M., Brand, H., Gillis Carlsson, Cox, D., Derkx, X., Dobaczewski, J., Eberhardt, K., Even, J., Gerl, J., Jäger, E., Kindler, B., Krier, J., Kojouharov, I., Kurz, N., Lommel, B., Mistry, A., Mokry, C., Nazarewicz, W., Nitsche, H., Omtvedt, J. P., Papadakis, P., I. Ragnarsson, Runke, J., Schaffner, H., Schausten, B., Shi, Y., Thörle-Pospiech, P., Torres, T., Traut, T., Trautmann, N., Türler, A., Ward, A., Ward, D. E. & Wiehl, N., 2016 Sep 1, In : Nuclear Physics, Section A. 953, p. 117-138 22 p.

Research output: Contribution to journalArticle

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 othersBrand, 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, In : Physical Review Letters. 111, 11, 112502.

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Related projects

Dirk Rudolph, Claes Fahlander, Pavel Golubev, Luis Sarmiento Pico, Anton Såmark-Roth, Daniel Cox, Ulrika Forsberg, Christian Lorenz, Natasa Lalovic, Natasa Lalovic, Ulrika Forsberg, Jnaneswari Gellanki, Robert Hoischen, Emma Johansson, Lise-Lotte Andersson, Rickard du Rietz, Jörgen Ekman & Corina Andreoiu

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