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

被引：53

作者：

Caciolli, A. ^{[1
,2
]}

Scott, D. A. ^{[3
]}

Di Leva, A. ^{[4
,5
]}

Formicola, A. ^{[6
]}

Aliotta, M. ^{[3
]}

Anders, M. ^{[7
]}

Bellini, A. ^{[8
,9
]}

Bemmerer, D. ^{[7
]}

Broggini, C. ^{[1
]}

Campeggio, M. ^{[10
,11
]}

Corvisiero, P. ^{[8
,9
]}

Depalo, R. ^{[1
,12
]}

Elekes, Z. ^{[7
]}

Fueloep, Zs ^{[13
]}

Gervino, G. ^{[14
,15
]}

Guglielmetti, A. ^{[10
,11
]}

Gustavino, C. ^{[6
]}

Gyuerky, Gy ^{[13
]}

Imbriani, G. ^{[4
,5
]}

Junker, M. ^{[6
]}

Marta, M. ^{[7
]}

Menegazzo, R. ^{[1
]}

Napolitani, E. ^{[12
,16
]}

Prati, P. ^{[8
,9
]}

Rigato, V. ^{[2
]}

Roca, V. ^{[4
,5
]}

Rolfs, C. ^{[17
]}

Alvarez, C. Rossi ^{[1
]}

Somorjai, E. ^{[13
]}

Salvo, C. ^{[6
,8
,9
]}

Straniero, O. ^{[5
,18
]}

Strieder, F. ^{[17
]}

Szuecs, T. ^{[13
]}

Terrasi, F. ^{[5
,19
]}

Trautvetter, H. P. ^{[17
]}

Trezzi, D. ^{[10
,11
]}

机构：

[1] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[2] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy

[3] Univ Edinburgh, SUPA, Sch Phys & Astron, Edinburgh, Midlothian, Scotland

[4] Univ Naples Federico II, Dipartimento Sci Fis, Naples, Italy

[5] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy

[6] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, Italy

[7] Helmholtz Zentrum Dresden Rossendorf, Dresden, Germany

[8] Univ Genoa, Dipartimento Fis, Genoa, Italy

[9] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[10] Univ Milan, Milan, Italy

[11] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[12] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

[13] Inst Nucl Res ATOMKI, Debrecen, Hungary

[14] Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy

[15] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[16] MATIS IMM CNR, Padua, Italy

[17] Ruhr Univ Bochum, Inst Expt Phys 3, Bochum, Germany

[18] Osservatorio Astron Collurania, Teramo, Italy

[19] Univ Naples 2, Caserta, Italy

来源：

EUROPEAN PHYSICAL JOURNAL A | 2012年 / 48卷 / 10期

关键词：

ANODIC TANTALUM OXIDE;

D O I：

10.1140/epja/i2012-12144-0

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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 O-17 and up to 96% in O-18). 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.

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页码：1 / 6

页数：6

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