Preparation and characterisation of isotopically enriched Ta2O5 targets for nuclear astrophysics studies

A. Caciolli, D. A. Scott, A. Di Leva, A. Formicola, M. Aliotta, M. Anders, A. Bellini, D. Bemmerer, C. Broggini, M. Campeggio, P. Corvisiero, R. Depalo, Z. Elekes, Zs Fülöp, G. Gervino, A. Guglielmetti, C. Gustavino, Gy Gyürky, G. Imbriani, M. JunkerM. Marta, R. Menegazzo, E. Napolitani, P. Prati, V. Rigato, V. Roca, C. Rolfs, C. Rossi Alvarez, E. Somorjai, C. Salvo, O. Straniero, F. Strieder, T. Szücs, F. Terrasi, H. P. Trautvetter, D. Trezzi

Research output: Article

36 Citations (Scopus)

Abstract

The direct measurement of reaction cross-sections at astrophysical energies often requires the use of solid targets of known thickness, isotopic composition, and stoichiometry that are able to withstand high beam currents for extended periods of time. Here, we report on the production and characterisation of isotopically enriched Ta2O5 targets for the study of proton-induced reactions at the Laboratory for Underground Nuclear Astrophysics facility of the Laboratori Nazionali del Gran Sasso. The targets were prepared by anodisation of tantalum backings in enriched water (up to 66% in 17O and up to 96% in 18O). Special care was devoted to minimising the presence of any contaminants that could induce unwanted background reactions with the beam in the energy region of astrophysical interest. Results from target characterisation measurements are reported, and the conclusions for proton capture measurements with these targets are drawn.

Original languageEnglish
Article number144
Pages (from-to)1-6
Number of pages6
JournalEuropean Physical Journal A
Volume48
Issue number10
DOIs
Publication statusPublished - jan. 1 2012

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Caciolli, A., Scott, D. A., Di Leva, A., Formicola, A., Aliotta, M., Anders, M., Bellini, A., Bemmerer, D., Broggini, C., Campeggio, M., Corvisiero, P., Depalo, R., Elekes, Z., Fülöp, Z., Gervino, G., Guglielmetti, A., Gustavino, C., Gyürky, G., Imbriani, G., ... Trezzi, D. (2012). Preparation and characterisation of isotopically enriched Ta2O5 targets for nuclear astrophysics studies. European Physical Journal A, 48(10), 1-6. [144]. https://doi.org/10.1140/epja/i2012-12144-0