Endurance and Accuracy: Fusion Cross-Section Measurements with the STELLA Experiment.

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Bibliographic Details
Title: Endurance and Accuracy: Fusion Cross-Section Measurements with the STELLA Experiment.
Authors: Courtin, Sandrine1 (AUTHOR), Heine, Marcel1 (AUTHOR)
Source: Nuclear Physics News. Apr-Jun2026, Vol. 36 Issue 2, p18-20. 3p.
Subject Terms: *Nuclear fusion, *Nucleosynthesis, *Gamma ray spectroscopy, *Nuclear counters, *Nuclear physics
Geographic Terms: Germany, Dresden (Germany)
Abstract: The article focuses on experimental studies of carbon fusion reactions, specifically the fusion of two carbon-12 nuclei (12C+12C), which play a critical role in nucleosynthesis within massive stars. It details the challenges in measuring the fusion cross-section at astrophysically relevant low energies due to quantum effects and resonance structures, and describes advanced detection techniques combining γ-ray and charged-particle coincidence measurements. The STELlar LAboratory (STELLA) apparatus, installed at the low-background Felsenkeller underground laboratory in Dresden, Germany, employs rotating carbon targets, silicon detectors, and fast-timing LaBr3(Ce) scintillators to achieve high sensitivity and background suppression, enabling cross-section measurements below the nanobarn level. These precise measurements aim to improve understanding of stellar carbon burning processes and refine theoretical fusion models. [Extracted from the article]
Database: Energy & Power Source
Description
Abstract:The article focuses on experimental studies of carbon fusion reactions, specifically the fusion of two carbon-12 nuclei (12C+12C), which play a critical role in nucleosynthesis within massive stars. It details the challenges in measuring the fusion cross-section at astrophysically relevant low energies due to quantum effects and resonance structures, and describes advanced detection techniques combining γ-ray and charged-particle coincidence measurements. The STELlar LAboratory (STELLA) apparatus, installed at the low-background Felsenkeller underground laboratory in Dresden, Germany, employs rotating carbon targets, silicon detectors, and fast-timing LaBr3(Ce) scintillators to achieve high sensitivity and background suppression, enabling cross-section measurements below the nanobarn level. These precise measurements aim to improve understanding of stellar carbon burning processes and refine theoretical fusion models. [Extracted from the article]
ISSN:10619127
DOI:10.1080/10619127.2026.2614256