The experimental present and future of superheavy nuclei synthesis

Citation
S. Saro et al., The experimental present and future of superheavy nuclei synthesis, ACT PHYS SL, 49(1), 1999, pp. 75-82
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA SLOVACA
ISSN journal
0323-0465 → ACNP
Volume
49
Issue
1
Year of publication
1999
Pages
75 - 82
Database
ISI
SICI code
0323-0465(199902)49:1<75:TEPAFO>2.0.ZU;2-S
Abstract
One of the long-term programs of nuclear physics is to investigate the prop erties of the heaviest atomic nuclei. The synthesis of nuclei with Z > 100 always belonged to experiments at laboratory detection limits. The last lar ge scale upgrade of experimental technique enabled to synthesize new nuclei with Z = 110, 111, 112. At these experiments no such a significant shell s tabilizing or isospin effect: was observed, which could eliminate the conti nuous decrease of cross sections of both "cold" and "hot" fusion reactions. For the synthesis of nuclei with Z greater than or equal to 113 cross sect ions below 1 pb are expected. To synthesize new superheavy nuclei with high er nuclear charge, the laboratory technique, to be used at the proposed rea ctions, should be again considerably upgraded. New target systems are consi dered, able to accept higher beam intensities. Some of the new superheavy e vaporation residues will probably decay by fission. At present no adequate detection methods are used at superheavy element research, enabling an unam biguous identification of single fissionable evaporation residues. Possibil ities to develop such detector systems are presented.