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Production cross section and decay study of Es 243 and Md 249

Briselet, R. ; Theisen, Ch ; Vandebrouck, M. ; Marchix, A. ; Airiau, M. ; Auranen, K. ; Badran, H. ; Boilley, D. ; Calverley, T. and Cox, D. LU , et al. (2019) In Physical Review C 99(2).
Abstract

In the study of the odd-Z, even-N nuclei Es243 and Md249, performed at the University of Jyväskylä, the fusion-evaporation reactions Au197(Ca48,2n)Es243 and Tl203(Ca48,2n)Md249 have been used for the first time. Fusion-evaporation residues were selected and detected using a gas-filled separator coupled with its focal-plane spectrometer. For Es243, the recoil decay correlation analysis yielded a half-life of 24±3s and a maximum production cross section of 37±10nb. In the same way, a half-life of 26±1s, an α-branching ratio of 75±5%, and a maximum production cross section of 300±80nb were determined for Md249. The decay properties of Es245, the daughter of Md249, were also measured: an α-branching ratio of 54±7% and a half-life of 65±6s.... (More)

In the study of the odd-Z, even-N nuclei Es243 and Md249, performed at the University of Jyväskylä, the fusion-evaporation reactions Au197(Ca48,2n)Es243 and Tl203(Ca48,2n)Md249 have been used for the first time. Fusion-evaporation residues were selected and detected using a gas-filled separator coupled with its focal-plane spectrometer. For Es243, the recoil decay correlation analysis yielded a half-life of 24±3s and a maximum production cross section of 37±10nb. In the same way, a half-life of 26±1s, an α-branching ratio of 75±5%, and a maximum production cross section of 300±80nb were determined for Md249. The decay properties of Es245, the daughter of Md249, were also measured: an α-branching ratio of 54±7% and a half-life of 65±6s. Experimental cross sections were compared to the results of calculations performed using the kewpie2 statistical fusion-evaporation code.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C
volume
99
issue
2
article number
024614
publisher
American Physical Society
external identifiers
  • scopus:85061810975
ISSN
2469-9985
DOI
10.1103/PhysRevC.99.024614
language
English
LU publication?
yes
id
badb47c4-19b3-4fec-ae31-2f38e0361215
date added to LUP
2022-03-31 12:29:31
date last changed
2022-04-23 23:09:47
@article{badb47c4-19b3-4fec-ae31-2f38e0361215,
  abstract     = {{<p>In the study of the odd-Z, even-N nuclei Es243 and Md249, performed at the University of Jyväskylä, the fusion-evaporation reactions Au197(Ca48,2n)Es243 and Tl203(Ca48,2n)Md249 have been used for the first time. Fusion-evaporation residues were selected and detected using a gas-filled separator coupled with its focal-plane spectrometer. For Es243, the recoil decay correlation analysis yielded a half-life of 24±3s and a maximum production cross section of 37±10nb. In the same way, a half-life of 26±1s, an α-branching ratio of 75±5%, and a maximum production cross section of 300±80nb were determined for Md249. The decay properties of Es245, the daughter of Md249, were also measured: an α-branching ratio of 54±7% and a half-life of 65±6s. Experimental cross sections were compared to the results of calculations performed using the kewpie2 statistical fusion-evaporation code.</p>}},
  author       = {{Briselet, R. and Theisen, Ch and Vandebrouck, M. and Marchix, A. and Airiau, M. and Auranen, K. and Badran, H. and Boilley, D. and Calverley, T. and Cox, D. and Déchery, F. and Defranchi Bisso, F. and Drouart, A. and Gall, B. and Goigoux, T. and Grahn, T. and Greenlees, P. T. and Hauschild, K. and Herzan, A. and Herzberg, R. D. and Jakobsson, U. and Julin, R. and Juutinen, S. and Konki, J. and Leino, M. and Lightfoot, A. and Lopez-Martens, A. and Mistry, A. and Nieminen, P. and Pakarinen, J. and Papadakis, P. and Partanen, J. and Peura, P. and Rahkila, P. and Rubert, J. and Ruotsalainen, P. and Sandzelius, M. and Saren, J. and Scholey, C. and Sorri, J. and Stolze, S. and Sulignano, B. and Uusitalo, J. and Ward, A. and Zielińska, M.}},
  issn         = {{2469-9985}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review C}},
  title        = {{Production cross section and decay study of Es 243 and Md 249}},
  url          = {{http://dx.doi.org/10.1103/PhysRevC.99.024614}},
  doi          = {{10.1103/PhysRevC.99.024614}},
  volume       = {{99}},
  year         = {{2019}},
}