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New Short-Lived Isotope 221U and the Mass Surface Near N=126
- Khuyagbaatar, J. (author)
- Yakushev, A. (author)
- Düllmann, Ch. E. (author)
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- Ackermann, D. (author)
- Andersson, L.-L. (author)
- Block, M. (author)
- Brand, H. (author)
- Cox, D. M. (author)
- Even, J. (author)
- Hartmann, W. (author)
- Herzberg, R.-D. (author)
- Heßberger, F. P. (author)
- Hoffmann, J. (author)
- Hübner, A. (author)
- Jäger, E. (author)
- Jeppsson, J. (author)
- Kindler, B. (author)
- Kratz, J. V. (author)
- Krier, J. (author)
- Kurz, N. (author)
- Lommel, B. (author)
- Maiti, M. (author)
- Minami, S. (author)
- Mistry, A. K. (author)
- Mrosek, Ch. M. (author)
- Pysmenetska, I. (author)
- Schaffner, H. (author)
- Schädel, M. (author)
- Schausten, B. (author)
- Steiner, J. (author)
- De Heidenreich, T. Torres (author)
- Uusitalo, J. (author)
- Wegrzecki, M. (author)
- Wiehl, N. (author)
- Yakusheva, V. (author)
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- (creator_code:org_t)
- 2015
- 2015
- English 4 s.
- In: Physical Review Letters. - 1079-7114. ; 115:24
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Heavy Elements
- Shell Structure
- Sampling Electronics
Publication and Content Type
- art (subject category)
- ref (subject category)
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- Khuyagbaatar, J.
- Yakushev, A.
- Düllmann, Ch. E.
- Ackermann, D.
- Andersson, L.-L.
- Block, M.
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- 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, ...
- Uusitalo, J.
- Wegrzecki, M.
- Wiehl, N.
- Yakusheva, V.
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- By the university
- Lund University
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