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Electron screening effects on a-decay

Musumarra, A, Farinon, F, Nociforo, C, Geissel, H, Baur, G, Behr, K-H, Bonasera, A, Bosch, F, Boutin, D, Brünle, A, Chen, L, Del Zoppo, A, Dimopoulou, C, Di Pietro, A, Faestermann, T, Figuera, P, Hagino, K, Janik, R, Karagiannis, C, Kienle, P, Kimura, S, Knöbel, R, Kojouharov, I, Kozhuharov, C, Kuboki, T, Kurcewicz, J, Kurz, N, Langanke, K, Lattuada, M, Litvinov, SA, Litvinov, YA, Martinez-Pinedo, G, Mazzocco, M, Montes, F, Motizuki, Y, Nolden, F, Ohtsubo, T, Okuma, Y, Patyk, Z, Pellegritf, MG, Pla, W, Pietri, S, Podolyak, Z, Prochazka, A, Scheidenberger, C, Scuderf, V, Sitar, B, Steck, M, Strmen, P, Sun, B, Suzuki, T, Szarka, I, Torresi, D, Weick, H, Winfield, JS, Winkler, M, Wollersheim, HJ and Yamaguchi, T (2009) Electron screening effects on a-decay In: NUCLEAR STRUCTURE AND DYNAMICS ’09, 2009-05-04 - 2009-05-08, Dubrovnik, Croatia.

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Abstract

An open problem in Nuclear Astrophysics concerns the understanding of electron‐screening effects on nuclear reaction rates at stellar energies. In this framework, we have proposed to investigate 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 highly‐charged α‐emitters. Candidates for the proposed investigation were carefully selected and will be studied by using the Schottky Mass Spectroscopy technique. In order to establish a solid reference data set, lifetimes and Qα‐value measurements of the corresponding neutrals have been performed directly at the FRS, by implanting the separated ions into an active Silicon stopper.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in AIP Conference Proceedings 1165, and may be found at http://proceedings.aip.org/resource/2/apcpcs/1165/1/415_1
Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Symplectic Elements
Date Deposited: 26 Oct 2012 10:34
Last Modified: 23 Sep 2013 19:42
URI: http://epubs.surrey.ac.uk/id/eprint/727975

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