The Electron-Gamma Coincidence Setup DAGOBERT
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908391014662144 |
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| author | Hesbacher, B. Steinhilber, G. Isaak, J. Pietralla, N. Birkhan, J. Cortés, M. L. Jakubassa-Amundsen, D. H. Jurosevic, I. von Neumann-Cosel, P. Rech, M. Roca-Maza, X. Schneider, D. |
| author_facet | Hesbacher, B. Steinhilber, G. Isaak, J. Pietralla, N. Birkhan, J. Cortés, M. L. Jakubassa-Amundsen, D. H. Jurosevic, I. von Neumann-Cosel, P. Rech, M. Roca-Maza, X. Schneider, D. |
| contents | The QCLAM electron spectrometer at the S-DALINAC electron accelerator at Technische Universität Darmstadt has been extended by the DAGOBERT $γ$-detector array consisting of fast timing and high efficiency LaBr$_3$:Ce detectors to perform electron-gamma coincidence measurements. The functionality of the setup and data acquisition system was demonstrated in a commissioning measurement on $^{12}\textrm{C}$ observing the $4.44\,$MeV and $15.11\,$MeV states. A medium-heavy nucleus, $^{96}\textrm{Ru}$, has been studied for the first time up to excitation energies of $15\,$MeV using the $(e,e'γ)$ reaction. In particular, the angular distribution of the $2_1^+$ state and the $γ$-decay branching ratios of the mixed-symmetric $2_3^+$ state were observed. DAGOBERT@QCLAM is a new and worldwide unique setup for nuclear structure studies of excitation and decay using purely electromagnetic probes, with a significantly improved sensitivity compared to previous experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_02072 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Electron-Gamma Coincidence Setup DAGOBERT Hesbacher, B. Steinhilber, G. Isaak, J. Pietralla, N. Birkhan, J. Cortés, M. L. Jakubassa-Amundsen, D. H. Jurosevic, I. von Neumann-Cosel, P. Rech, M. Roca-Maza, X. Schneider, D. Instrumentation and Detectors Nuclear Experiment The QCLAM electron spectrometer at the S-DALINAC electron accelerator at Technische Universität Darmstadt has been extended by the DAGOBERT $γ$-detector array consisting of fast timing and high efficiency LaBr$_3$:Ce detectors to perform electron-gamma coincidence measurements. The functionality of the setup and data acquisition system was demonstrated in a commissioning measurement on $^{12}\textrm{C}$ observing the $4.44\,$MeV and $15.11\,$MeV states. A medium-heavy nucleus, $^{96}\textrm{Ru}$, has been studied for the first time up to excitation energies of $15\,$MeV using the $(e,e'γ)$ reaction. In particular, the angular distribution of the $2_1^+$ state and the $γ$-decay branching ratios of the mixed-symmetric $2_3^+$ state were observed. DAGOBERT@QCLAM is a new and worldwide unique setup for nuclear structure studies of excitation and decay using purely electromagnetic probes, with a significantly improved sensitivity compared to previous experiments. |
| title | The Electron-Gamma Coincidence Setup DAGOBERT |
| topic | Instrumentation and Detectors Nuclear Experiment |
| url | https://arxiv.org/abs/2506.02072 |