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Title: The Synthesis of Superheavy Elements

Abstract

The elements with the atomic numbers 107-112 have been synthesized and unambiguously identified at the velocity filter SHIP at GSI. The technique allowing for this successful experimental program is the combination of the detection of correlations between evaporation residues and subsequent a-decays with a powerful separator. Systematic investigations, the construction of decay chain networks and mass measurements are some of the possible approaches to study the decay chains tentatively attributed to the isotopes of the elements 114 and 116 at Dubna, which are, in contrast to those observed at GSI, not connected to {alpha}-decays of known isotopes. The sensitivity limit of the set-up at GSI has reached the 1pb level. For systematic investigation in this region of extremely low cross section and to synthesize nuclei of higher Z this limit has to be pushed to even lower values. An extensive development program is pursued at SHIP in order to reach at least an order of magnitude lower cross sections. Apart from target cooling and separator development a super conducting CW linear accelerator is studied to reach this goal. To design a successful experimental program for the possible discovery of new elements the nuclear structure of the heaviest nuclei has tomore » be understood as well as the reaction mechanism which leads to their production in heavy ion reactions. We have initiated series of systematic studies for both subjects.« less

Authors:
 [1]
  1. Gesellschaft fuer Schwerionenforschung GSI, Planckstr.1, D64291 Darmstadt (Germany)
Publication Date:
OSTI Identifier:
20632565
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 680; Journal Issue: 1; Conference: 17. international conference on the application of accelerators in research and industry, Denton, TX (United States), 12-16 Nov 2002; Other Information: DOI: 10.1063/1.1619701; (c) 2003 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; CORRELATIONS; CROSS SECTIONS; DUBNA; ELEMENT 114; ELEMENT 116; HEAVY ION FUSION REACTIONS; HEAVY IONS; ISOTOPE SEPARATORS; LINEAR ACCELERATORS; PARTICLE DISCRIMINATION; REACTION KINETICS; SENSITIVITY; TRANSACTINIDE ELEMENTS

Citation Formats

Ackermann, Dieter, and Institut fuer Physik, Johannes Gutenberg-Universitaet, Staudingerweg 7, D-55099 Mainz. The Synthesis of Superheavy Elements. United States: N. p., 2003. Web. doi:10.1063/1.1619701.
Ackermann, Dieter, & Institut fuer Physik, Johannes Gutenberg-Universitaet, Staudingerweg 7, D-55099 Mainz. The Synthesis of Superheavy Elements. United States. https://doi.org/10.1063/1.1619701
Ackermann, Dieter, and Institut fuer Physik, Johannes Gutenberg-Universitaet, Staudingerweg 7, D-55099 Mainz. 2003. "The Synthesis of Superheavy Elements". United States. https://doi.org/10.1063/1.1619701.
@article{osti_20632565,
title = {The Synthesis of Superheavy Elements},
author = {Ackermann, Dieter and Institut fuer Physik, Johannes Gutenberg-Universitaet, Staudingerweg 7, D-55099 Mainz},
abstractNote = {The elements with the atomic numbers 107-112 have been synthesized and unambiguously identified at the velocity filter SHIP at GSI. The technique allowing for this successful experimental program is the combination of the detection of correlations between evaporation residues and subsequent a-decays with a powerful separator. Systematic investigations, the construction of decay chain networks and mass measurements are some of the possible approaches to study the decay chains tentatively attributed to the isotopes of the elements 114 and 116 at Dubna, which are, in contrast to those observed at GSI, not connected to {alpha}-decays of known isotopes. The sensitivity limit of the set-up at GSI has reached the 1pb level. For systematic investigation in this region of extremely low cross section and to synthesize nuclei of higher Z this limit has to be pushed to even lower values. An extensive development program is pursued at SHIP in order to reach at least an order of magnitude lower cross sections. Apart from target cooling and separator development a super conducting CW linear accelerator is studied to reach this goal. To design a successful experimental program for the possible discovery of new elements the nuclear structure of the heaviest nuclei has to be understood as well as the reaction mechanism which leads to their production in heavy ion reactions. We have initiated series of systematic studies for both subjects.},
doi = {10.1063/1.1619701},
url = {https://www.osti.gov/biblio/20632565}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 680,
place = {United States},
year = {Tue Aug 26 00:00:00 EDT 2003},
month = {Tue Aug 26 00:00:00 EDT 2003}
}