New detection systems for an enhanced sensitivity in key stellar (n,) measurements
J. Lerendegui-Marco,V. Babiano-Suarez,J. Balibrea-Correa,C. Domingo-Pardo,I. Ladarescu,A. Tarifeno-Saldivia,V. Alcayne,D. Cano-Ott,E. Gonzalez-Romero,T. Martinez,E. Mendoza,C. Guerrero,F. Calvino,A. Casanovas,U. Koster,N. M. Chiera,R. Dressler,E. A. Maugeri,D. Schumann,O. Aberle,S. Altieri,S. Amaducci,J. Andrzejewski,M. Bacak,C. Beltrami,S. Bennett,A. P. Bernardes,E. Berthoumieux,R. Beyer,M. Boromiza,D. Bosnar,M. Caamano,M. Calviani,F. Cerutti,G. Cescutti,E. Chiaveri,P. Colombetti,N. Colonna,P. Console Camprini,G. Cortes,M. A. Cortes-Giraldo,L. Cosentino,S. Cristallo,S. Dellmann,M. Di Castro,S. Di Maria,M. Diakaki,M. Dietz,E. Dupont,I. Duran,Z. Eleme,S. Fargier,B. Fernandez,B. Fernandez-Dominguez,P. Finocchiaro,S. Fiore,F. Garcia-Infantes,A. Gawlik-Ramiega,G. Gervino,S. Gilardoni,F. Gunsing,C. Gustavino,J. Heyse,W. Hillman,D. G. Jenkins,E. Jericha,A. Junghans,Y. Kadi,K. Kaperoni,G. Kaur,A. Kimura,I. Knapova,M. Kokkoris,M. Krticka,N. Kyritsis,C. Lederer-Woods,G. Lerner,A. Manna,A. Masi,C. Massimi,P. Mastinu,M. Mastromarco,A. Mazzone,A. Mengoni,V. Michalopoulou,P. M. Milazzo,R. Mucciola,F. Murtas,E. Musacchio-Gonzalez,A. Musumarra,A. Negret,A. Perez de Rada,P. Perez-Maroto,N. Patronis,J. A. Pavon-Rodriguez,M. G. Pellegriti,J. Perkowski,C. Petrone,E. Pirovano,J. Plaza,S. Pomp,I. Porras,J. Praena,J. M. Quesada,R. Reifarth,D. Rochman,Y. Romanets,C. Rubbia,A. Sanchez-Caballero,M. Sabate-Gilarte,P. Schillebeeckx,A. Sekhar,A. G. Smith,N. V. Sosnin,M. E. Stamati,A. Sturniolo,G. Tagliente,D. Tarrio,P. Torres-Sanchez,E. Vagena,S. Valenta,V. Variale,P. Vaz,G. Vecchio,D. Vescovi,V. Vlachoudis,R. Vlastou,A. Wallner,P. J. Woods,T. Wright,R. Zarrella,P. Zugec
arxiv（2023）
引用0|浏览27
暂无评分
摘要
Neutron capture cross-section measurements are fundamental in the study of astrophysical phenomena, such as the slow neutron capture (s-) process of nucleosynthesis operating in red-giant and massive stars. However, neutron capture measurements via the time-of-flight (TOF) technique on key s-process nuclei are often challenging. Difficulties arise from the limited mass (similar to mg) available and the high sample-related background in the case of the unstable s-process branching points. Measurements on neutron magic nuclei, that act as s-process bottlenecks, are affected by low (n,gamma) cross sections and a dominant neutron scattering background. Overcoming these experimental challenges requires the combination of facilities with high instantaneous flux, such as n_TOF-EAR2, with detection systems with an enhanced detection sensitivity and high counting rate capabilities. This contribution reviews some of the latest detector developments in detection systems for (n,gamma) measurements at n_TOF, such as i-TED, an innovative detection system which exploits the Compton imaging technique to reduce the dominant neutron scattering background and s-TED, a highly segmented total energy detector intended for high flux facilities. The discussion will be illustrated with results of the first measurement of key the s-process branching-point reaction Se-79(n,gamma).
