Advances in radiative capture studies at LUNA with a segmented BGO detector

被引：14

作者：

Skowronski, J. ^{[1
,2
]}

Gesue, R. M. ^{[3
,4
]}

Boeltzig, A. ^{[5
,6
]}

Ciani, G. F. ^{[7
,8
]}

Piatti, D. ^{[1
,2
]}

Rapagnani, D. ^{[3
,4
]}

Aliotta, M. ^{[9
]}

Ananna, C. ^{[3
,4
]}

Barile, F. ^{[7
,8
]}

Bemmerer, D. ^{[5
]}

Best, A. ^{[3
,4
]}

Broggini, C. ^{[2
]}

Bruno, C. G. ^{[9
]}

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

Campostrini, M. ^{[10
]}

Cavanna, F. ^{[11
]}

Colombetti, P. ^{[11
,12
]}

Compagnucci, A. ^{[6
,13
]}

Corvisiero, P. ^{[14
,15
]}

Csedreki, L. ^{[16
]}

Davinson, T. ^{[9
]}

Depalo, R. ^{[17
,18
]}

Di Leva, A. ^{[3
,4
]}

Elekes, Z. ^{[16
]}

Ferraro, F. ^{[17
,18
]}

Formicola, A.

Fulop, Zs ^{[16
]}

Gervino, G. ^{[16
]}

Guglielmetti, A. ^{[17
]}

Gustavino, C. ^{[19
]}

Gyurky, Gy ^{[16
]}

Imbriani, G. ^{[3
,4
]}

Junker, M. ^{[6
,13
]}

Lugaro, M. ^{[20
,21
,25
]}

Marigo, P. ^{[1
,2
]}

Masha, E. ^{[5
,17
,18
]}

Menegazzo, R. ^{[2
]}

Paticchio, V ^{[8
]}

Perrino, R. ^{[8
]}

Prati, P. ^{[14
,15
]}

Rigato, V ^{[10
]}

Schiavulli, L. ^{[7
,8
]}

Sidhu, R. S. ^{[9
,22
,23
]}

Straniero, O. ^{[19
,24
]}

Szucs, T. ^{[16
]}

Zavatarelli, S. ^{[14
,15
]}

机构：

[1] Univ Padua, Dipartimento Fis, Via F Marzolo 8, I-35131 Padua, Italy

[2] INFN, Sez Padova, Via F Marzolo 8, I-35131 Padua, Italy

[3] Univ Napoli Federico II, Dipartimento Fis E Pancini, Complesso Univ Monte St Angelo Via Cinthia 21, I-80125 Naples, Italy

[4] INFN, Sez Napoli, Complesso Univ Monte St Angelo Via Cinthia 21, I-80125 Naples, Italy

[5] Helmholtz Zentrum Dresden Rossendorf, Bautzner Landstr 400, D-01328 Dresden, Germany

[6] INFN, Lab Nazl Gran Sasso, Via G Acitelli 22, I-67100 Assergi, Italy

[7] Univ Bari A Moro, Dipartimento Fis M Merlin, Via E Orabona 4, I-70125 Bari, Italy

[8] INFN, Sez Bari, Via E Orabona 4, I-70125 Bari, Italy

[9] Univ Edinburgh, SUPA Scottish Univ Phys Alliance, Sch Phys & Astron, Edinburgh EH9 3FD, Scotland

[10] Lab Nazl Legnaro, Viale Univ 2, I-35020 Legnaro, PD, Italy

[11] INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy

[12] Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy

[13] Gran Sasso Sci Inst, Viale F Crispi 7, I-67100 Laquila, Italy

[14] Univ Genoa, Via Dodecaneso 33, I-16146 Genoa, Italy

[15] INFN, Sez Genova, Via Dodecaneso 33, I-16146 Genoa, Italy

[16] Inst Nucl Res ATOMK, POB 51, H-4001 Debrecen, Hungary

[17] Univ Milan, Dipartimento Fis, Via G Celoria 16, I-20133 Milan, Italy

[18] INFN, Sez Milano, Via G Celoria 16, I-20133 Milan, Italy

[19] INFN, Sez Roma, Piazzale A Moro 2, I-00185 Rome, Italy

[20] Eotvos Lorand Res Network ELKH, Res Ctr Astron & Earth Sci CSFK, Konkoly Observ, Konkoly Thege Mikl Ut 15-17, H-1121 Budapest, Hungary

[21] Eotvos Lorand Univ, Inst Phys, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary

[22] GSI Helmholtzzentrum Schwerionenforsch, Planckstr 1, D-64291 Darmstadt, Germany

[23] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[24] INAF, Osserv Astron Abruzzo, Via Mentore Maggini, I-64100 Teramo, Italy

[25] MTA Ctr Excellence, Budapest, Hungary

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2023年 / 50卷 / 04期

关键词：

gamma-ray total absorption spectroscopy; nuclear astrophysics experiment; radiation shielding and background reduction; activation measurement; segmented bismuth germanium oxide (BGO) detector; CROSS-SECTION; 1ST MEASUREMENT; ENERGY-LEVELS; GAMMA)O-15; N-14(P; SETUP;

D O I：

10.1088/1361-6471/acb961

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：

Studies of charged-particle reactions for low-energy nuclear astrophysics require high sensitivity, which can be achieved by means of detection setups with high efficiency and low backgrounds, to obtain precise measurements in the energy region of interest for stellar scenarios. High-efficiency total absorption spectroscopy is an established and powerful tool for studying radiative capture reactions, particularly if combined with the cosmic background reduction by several orders of magnitude obtained at the Laboratory for Underground Nuclear Astrophysics (LUNA). We present recent improvements in the detection setup with the Bismuth Germanium Oxide (BGO) detector at LUNA, aiming to reduce high-energy backgrounds and increase the summing detection efficiency. The new design results in enhanced sensitivity of the BGO setup, as we demonstrate and discuss in the context of the first direct measurement of the 65 keV resonance (E (x) = 5672 keV) of the O-17(p,gamma)F-18 reaction. Moreover, we show two applications of the BGO detector, which exploit its segmentation. In the case of complex gamma-ray cascades, e.g. the de-excitation of E (x) = 5672 keV in F-18, the BGO segmentation allows to identify and suppress the beam-induced background signals that mimic the sum peak of interest. We demonstrate another new application for such a detector in form of in situ activation measurements of a reaction with beta (+) unstable product nuclei, e.g. the N-14(p,gamma)O-15 reaction.

引用

页数：20

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