# The new element 111

@article{Hofmann1995TheNE,
title={The new element 111},
author={Sigurd Hofmann and Vasil Ninov and Fritz Peter Hessberger and Peter Armbruster and H. Folger and Gottfried M{\"u}nzenberg and H. J. Sch{\"o}tt and A. G. Popeko and A. V. Yeremin and A. N. Andreyev and {\vS}. {\vS}{\'a}r{\'o} and Rudolf Janik and Matti Leino},
journal={Zeitschrift f{\"u}r Physik A Hadrons and Nuclei},
year={1995},
volume={350},
pages={281-282}
}
• Published 1 December 1995
• Physics
• Zeitschrift für Physik A Hadrons and Nuclei
The new element 111 was produced and unambiguously identified in an experiment at SHIP, GSI Darmstadt. Three nuclei of the isotope272111 were observed in irradiations of209Bi targets with64Ni projectiles of 318 MeV and 320 MeV energy. The cross-sections are (1.7−1.4+3.3) pb and (3.5−2.3+4.6) pb, respectively. The nuclei decay by a emission into the new and so far the heaviest isotopes of the elements 109 and 107 with mass numbers A=268 and A=264. Theα-decay chains were followed down to the…
188 Citations
Experiment on the Synthesis of Element 113 in the Reaction 209Bi(70Zn,n)278113
• Physics
• 2004
The convincing candidate event of the isotope of the 113th element, 278 113, and its daughter nuclei, 274 111 and 270 Mt, were observed, for the first time, in the 209 Bi + 70 Zn reaction at a beam
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The new elements 110, 111 and 112 were synthesized and unambiguously identified in experiments at SHIP. Due to strong shell effects the dominant decay mode is not fission, but emission of alpha
Production and decay properties of 272111 and its daughter nuclei
• Physics
• 2004
The production and decay of 272 111 has been investigated using a gas-filled recoil ion separator in irradiations of 209 Bi targets with 64 Ni beam at 320, 323 and 326 MeV. We have observed 14
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• 2002
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Development of an odd-Z-projectile reaction for heavy element synthesis: 208Pb(64Ni,n)271Ds and 208Pb(65Cu,n)(272)111.
• Physics
Physical review letters
• 2004
This experiment confirms the discovery of element 111 by the Darmstadt Group who used the 209Bi(64Ni,n)(272)111 reaction and an optimum energy of 321 MeV was estimated for the production of (272) 111 in the new reaction 208Pb(65Cu,n).
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• Physics
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• 2018
A new element 113 was searched by the reaction of Zn on Bi using a gas-filled recoil ion separator at the RIKEN linear accelerator facility. Totally three decay chains due to 113 were observed. The
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• Physics
• 2007
The production and decay of 277 112 have been investigated using a gas-filled recoil ion separator in irradiations of 208 Pb targets with a 70 Zn beam at 349.5 MeV. We have observed two α-decay

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