Electron screening effects on a-decay

A. Musumarra, F. Farinon, C. Nociforo, H. Geissel, G. Baur, K. H. Behr, A. Bonasera, F. Bosch, D. Boutin, A. Brünle, L. Chen, A. Del Zoppo, C. Dimopoulou, A. Di Pietro, T. Faestermann, P. Figuera, K. Hagino, R. Janik, C. Karagiannis, P. KienleS. Kimura, R. Knöbel, I. Kojouharov, C. Kozhuharov, T. Kuboki, J. Kurcewicz, N. Kurz, K. Langanke, M. Lattuada, S. A. Litvinov, Yu A. Litvinov, G. Martinez-Pinedo, M. Mazzocco, F. Montes, Y. Motizuki, F. Nolden, T. Ohtsubo, Y. Okuma, Z. Patyk, M. G. Pellegritf, W. Pla, S. Pietri, Z. Podolyak, A. Prochazka, C. Scheidenberger, V. Scuderf, B. Sitar, M. Steck, P. Strmen, B. Sun, T. Suzuki, I. Szarka, D. Torresi, H. Weick, J. S. Winfield, M. Winkler, H. J. Wollersheim, T. Yamaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

An open problem in Nuclear Astrophysics concerns the understanding of electronscreening ffects on nuclear reaction rates at stellar energies. In this framework, we have proposed to nvestigate the influence of the electron cloud on α-decay by measuring Q-values and α-decay half-lives of fully stripped, H-like and He-like ions. These kinds of measurements have been feasible just recently for highly-charged radioactive nuclides by fragmentation of 238U at relativistic energies at the FRS-ESR facility at GSI. In this way it is possible to produce, efficiently separate and store highlycharged α-emitters. Candidates for the proposed investigation were carefully selected and wiU be studied by using the Schottky Mass Spectroscopy technique. In order to establish a solid reference data set, lifetimes and Q α-value measurements of the corresponding neutrals have been performed directly at the FRS, by implanting the separated ions into an active SiUcon stopper.

Original languageEnglish
Title of host publicationNuclear Structure and Dynamics '09 - Proceedings of the International Conference
Pages415-418
Number of pages4
DOIs
Publication statusPublished - 2009
Externally publishedYes
EventInternational Conference on Nuclear Structure and Dynamics '09 - Dubrovnik, Croatia
Duration: 2009 May 42009 May 8

Publication series

NameAIP Conference Proceedings
Volume1165
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Conference on Nuclear Structure and Dynamics '09
Country/TerritoryCroatia
CityDubrovnik
Period09/5/409/5/8

Keywords

  • Alpha-Decay
  • Electron Screening
  • Lifetimes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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