Seminar: Charged particle detection at ELI-NP

Datum

04.12.2025

Zeit

15:00 - 16:00

Sprache

en

Hauptthema

Willkommen

Andere Themen

Physik, Willkommen

Beschreibung

Extreme Light Infrastructure Silicon Strip Array (ELISSA), the silicon strip detector array developed at the Extreme Light Infrastructure - Nuclear Physics (ELI-NP) facility in collaboration with the Instituto Nazionale de Fisica Nucleare - Laboratori Nazionali del Sud (INFN-LNS), is a 4pi position sensitive silicon strip array. This detector is specifically designed to measure charged particles coming from photodissociation reactions relevant for p-process nucleosynthesis and supernova explosions. The first in-beam tests of the ELISSA experiential set-up were performed at the 3 MV Tandetron accelerator of National Horia Hulubei National Institute for research and development in Physics and Nuclear Engineering (NIPNE). During this in-beam performance test, both analog and digital electronic modules were used to process the data. The performance (such as angular coverage, threshold, energy and position resolution) of the silicon strip array are detailed in this presentation. Further, this setup was used for the absolute cross section measurement of key reactions in nuclear astrophysics, such as: 19F(p,α)16O, 7Li(p,α)4He and 1H(11B,α)αα. The 19F(p,α)16O reaction occurs via three channels: (p,α0), (p,απ), and (p,αγ). While the (p,α0) channel is well constrained by previous measurements in the literature, there is little to no data for the remaining two channels in the astrophysical energy region of interest. The 7Li(p,α)4He reaction is linked with the so-called “Cosmological Lithium Problem”, therefore the results contribute to better understand the destruction of Lithium in the Universe. The abundance of light elements in the Universe is related to different nucleosynthesis scenario, ranging from primordial to stellar nucleosynthesis. Lithium, beryllium and boron (LiBeB) is used for understanding stellar mixing phenomena. Besides the role in nuclear astrophysics, the 1H(11B,α)αα reaction is important primarily due to its relevance in nuclear fusion reactor development because of the lack of neutrons in the reactions products. To solve the disagreement between the previous measurements in the literature, 1H(11B, α)αα reaction cross section was measured. Preliminary results of the above mentioned measurements will be detailed in this presentation.

Links

• Termindetails auf den Webseiten der TU Dresden (https://tu-dresden.de)

Letztmalig verändert: 04.12.2025, 07:37:35