Nuclei in the High Spin States Beams for Super Heavy Elements Production

p. 161-166

Abstract

In the last three decades more than one hundred of new isotopes with Z > 103 have been discovered in cold fusion reactions with Heavy Ions, with the dream to reach the Super Heavy Nuclear Island. This Island was theoretical predicted in the seventies to be situated around Z=ll4 and N=184. The fusion cross sections in reactions with 48Ca on heavy targets are of the order of the pico barn, it means a few months of experiment for few events, in the normal experiments with the actual accelerators intensities and targets. New ideas can be proposed : collision between two heavy nuclei with high spin ground state or the combination of the heavy nuclei with high spin isomer. These high spins states can stabilise the double nuclear system and rise the chance to go into fusion. We suggest to use the advantage of High Spin Isomer States, by taking into account the importance of the quantum number G (spin – isospin coupling) suggested by Ripka (2008). The 178Hf 2m (2m means second isomer, I=16h, 3l years life time) is an interesting nucleus. In this article we propose to use this isomer as a target (projectile) for production of SHE. More, we suggest other high spin targets projectile combination like : 117Sn(I=11/2 , 14d) + 176Lu (I=7 , 38Gy) → 293121

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References

Bibliographical reference

Domitian G. Popescu, « Nuclei in the High Spin States Beams for Super Heavy Elements Production », CASYS, 23 | 2010, 161-166.

Electronic reference

Domitian G. Popescu, « Nuclei in the High Spin States Beams for Super Heavy Elements Production », CASYS [Online], 23 | 2010, Online since 14 October 2024, connection on 13 November 2024. URL : http://popups.lib.uliege.be/1373-5411/index.php?id=4668

Author

Domitian G. Popescu

Université Ile de la Réunion ; Laboratoire de Physique Théorique Fondamentale de Paris

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