New Short-Lived Isotope 221U and the Mass Surface Near N=126

Khuyagbaatar, J.; Yakushev, A.; Düllmann, Ch. E.; Ackermann, D.; Andersson, L.-L.; Block, M.; Brand, H.; Cox, D. M.; Even, J.; Forsberg, Ulrika; Golubev, Pavel; Hartmann, W.; Herzberg, R.-D.; Heßberger, F. P.; Hoffmann, J.; Hübner, A.; Jäger, E.; Jeppsson, J.; Kindler, B.; Kratz, J. V.; Krier, J.; Kurz, N.; Lommel, B.; Maiti, M.; Minami, S.; Mistry, A. K.; Mrosek, Ch. M.; Pysmenetska, I.; Rudolph, Dirk; Sarmiento, Luis; Schaffner, H.; Schädel, M.; Schausten, B.; Steiner, J.; De Heidenreich, T. Torres; Uusitalo, J.; Wegrzecki, M.; Wiehl, N.; Yakusheva, V.

New Short-Lived Isotope 221U and the Mass Surface Near N=126

Mark

Khuyagbaatar, J. ; Yakushev, A. ; Düllmann, Ch. E. ; Ackermann, D. ; Andersson, L.-L. ; Block, M. ; Brand, H. ; Cox, D. M. ; Even, J. and Forsberg, Ulrika ^LU , et al. (2015) In Physical Review Letters 115(24).

Abstract: Two short-lived isotopes 221U and 222U were produced as evaporation residues in the fusion reaction 50Ti+176Yb at the gas-filled recoil separator TASCA. An α decay with an energy of Eα=9.31(5) MeV and half-life T1/2=4.7(7) μs was attributed to 222U. The new isotope 221U was identified in α-decay chains starting with Eα=9.71(5) MeV and T1/2=0.66(14) μs leading to known daughters. Synthesis and detection of these unstable heavy nuclei and their descendants were achieved thanks to a fast data readout system. The evolution of the N=126 shell closure and its influence on the stability of uranium isotopes are discussed within the framework of α-decay reduced width.

Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/8311218

author

Khuyagbaatar, J. ; Yakushev, A. ; Düllmann, Ch. E. ; Ackermann, D. ; Andersson, L.-L. ; Block, M. ; Brand, H. ; Cox, D. M. ; Even, J. and Forsberg, Ulrika ^LU , et al. (More)

Khuyagbaatar, J. ; Yakushev, A. ; Düllmann, Ch. E. ; Ackermann, D. ; Andersson, L.-L. ; Block, M. ; Brand, H. ; Cox, D. M. ; Even, J. ; Forsberg, Ulrika ^LU ; Golubev, Pavel ^LU ; Hartmann, W. ; Herzberg, R.-D. ; Heßberger, F. P. ; Hoffmann, J. ; Hübner, A. ; Jäger, E. ; Jeppsson, J. ; Kindler, B. ; Kratz, J. V. ; Krier, J. ; Kurz, N. ; Lommel, B. ; Maiti, M. ; Minami, S. ; Mistry, A. K. ; Mrosek, Ch. M. ; Pysmenetska, I. ; Rudolph, Dirk ^LU

; Sarmiento, Luis ^LU ; Schaffner, H. ; Schädel, M. ; Schausten, B. ; Steiner, J. ; De Heidenreich, T. Torres ; Uusitalo, J. ; Wegrzecki, M. ; Wiehl, N. and Yakusheva, V. (Less)

organization

publishing date

2015

type

Contribution to journal

publication status

published

subject

Subatomic Physics

keywords

Heavy Elements, Shell Structure, Sampling Electronics

in

Physical Review Letters

volume

115

issue

24

article number

242502

pages

4 pages

publisher

American Physical Society

external identifiers

pmid:26705628
wos:000366107500004
scopus:84949671163
pmid:26705628

ISSN

1079-7114

DOI

10.1103/PhysRevLett.115.242502

project

Nuclear Structure at the Limits: Isotope-selective Spectroscopy

language

English

LU publication?

yes

id

c55c19a8-f00b-49fc-9cf1-7dcd56090715 (old id 8311218)

date added to LUP

2016-04-01 10:16:41

date last changed

2022-04-20 00:36:46

@article{c55c19a8-f00b-49fc-9cf1-7dcd56090715,
  abstract     = {{Two short-lived isotopes 221U and 222U were produced as evaporation residues in the fusion reaction 50Ti+176Yb at the gas-filled recoil separator TASCA. An α decay with an energy of Eα=9.31(5)  MeV and half-life T1/2=4.7(7)  μs was attributed to 222U. The new isotope 221U was identified in α-decay chains starting with Eα=9.71(5)  MeV and T1/2=0.66(14)  μs leading to known daughters. Synthesis and detection of these unstable heavy nuclei and their descendants were achieved thanks to a fast data readout system. The evolution of the N=126 shell closure and its influence on the stability of uranium isotopes are discussed within the framework of α-decay reduced width.}},
  author       = {{Khuyagbaatar, J. and Yakushev, A. and Düllmann, Ch. E. and Ackermann, D. and Andersson, L.-L. and Block, M. and Brand, H. and Cox, D. M. and Even, J. and Forsberg, Ulrika and Golubev, Pavel and Hartmann, W. and Herzberg, R.-D. and Heßberger, F. P. and Hoffmann, J. and Hübner, A. and Jäger, E. and Jeppsson, J. and Kindler, B. and Kratz, J. V. and Krier, J. and Kurz, N. and Lommel, B. and Maiti, M. and Minami, S. and Mistry, A. K. and Mrosek, Ch. M. and Pysmenetska, I. and Rudolph, Dirk and Sarmiento, Luis and Schaffner, H. and Schädel, M. and Schausten, B. and Steiner, J. and De Heidenreich, T. Torres and Uusitalo, J. and Wegrzecki, M. and Wiehl, N. and Yakusheva, V.}},
  issn         = {{1079-7114}},
  keywords     = {{Heavy Elements; Shell Structure; Sampling Electronics}},
  language     = {{eng}},
  number       = {{24}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{New Short-Lived Isotope 221U and the Mass Surface Near N=126}},
  url          = {{https://lup.lub.lu.se/search/files/1709105/8311259.pdf}},
  doi          = {{10.1103/PhysRevLett.115.242502}},
  volume       = {{115}},
  year         = {{2015}},
}

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New Short-Lived Isotope 221U and the Mass Surface Near N=126