New detection systems for an enhanced sensitivity in key stellar (n,$γ$) measurements
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2023
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866910653107666944 |
|---|---|
| author | Lerendegui-Marco, J. Babiano-Suárez, V. Balibrea-Correa, J. Domingo-Pardo, C. Ladarescu, I. Tarifeño-Saldivia, A. Alcayne, V. Cano-Ott, D. González-Romero, E. Martínez, T. Mendoza, E. Guerrero, C. Calviño, F. Casanovas, A. Köster, U. Chiera, N. M. Dressler, R. Maugeri, E. A. Schumann, D. Collaboration, the n_TOF |
| author_facet | Lerendegui-Marco, J. Babiano-Suárez, V. Balibrea-Correa, J. Domingo-Pardo, C. Ladarescu, I. Tarifeño-Saldivia, A. Alcayne, V. Cano-Ott, D. González-Romero, E. Martínez, T. Mendoza, E. Guerrero, C. Calviño, F. Casanovas, A. Köster, U. Chiera, N. M. Dressler, R. Maugeri, E. A. Schumann, D. Collaboration, the n_TOF |
| contents | 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 ($\sim$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,$γ$) 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,$γ$) 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 $^{79}$Se(n,$γ$). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_08701 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | New detection systems for an enhanced sensitivity in key stellar (n,$γ$) measurements Lerendegui-Marco, J. Babiano-Suárez, V. Balibrea-Correa, J. Domingo-Pardo, C. Ladarescu, I. Tarifeño-Saldivia, A. Alcayne, V. Cano-Ott, D. González-Romero, E. Martínez, T. Mendoza, E. Guerrero, C. Calviño, F. Casanovas, A. Köster, U. Chiera, N. M. Dressler, R. Maugeri, E. A. Schumann, D. Collaboration, the n_TOF Nuclear Experiment Instrumentation and Methods for Astrophysics 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 ($\sim$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,$γ$) 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,$γ$) 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 $^{79}$Se(n,$γ$). |
| title | New detection systems for an enhanced sensitivity in key stellar (n,$γ$) measurements |
| topic | Nuclear Experiment Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2303.08701 |