Li$_2$MnCl$_4$ single crystal: new candidate for red-emitting neutron scintillator
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arXiv
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910581319008256 |
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| author | Vanecek, Vojtech Kral, Robert Krehlikova, Katerina Kuverkova, Romana Babin, Vladimir Zemenova, Petra Rohlicek, Jan Malkova, Zuzana Jurkovicova, Terezia Nikl, Martin |
| author_facet | Vanecek, Vojtech Kral, Robert Krehlikova, Katerina Kuverkova, Romana Babin, Vladimir Zemenova, Petra Rohlicek, Jan Malkova, Zuzana Jurkovicova, Terezia Nikl, Martin |
| contents | Novel red-emitting scintillator Li$_2$MnCl$_4$ is proposed as a candidate for thermal neutron detection. It features high Li content, low density, low effective atomic number, and emission in red-NIR region. These characteristics make it an interesting candidate for long distance neutron detection in harsh enviroments e. g. decomisioning of nuclear powerplants. The absorption spectrum is thoroughly investigated in the scope of Tanabe-Sugano diagram. Luminescence mechanism in the undoped Li$_2$MnCl$_4$ is studied in depth. Doping by Eu$^{2+}$ and Ce$^{3+}$ is introduced as a trial to improve the scintillation efficiency. We show in the Eu$^{2+}$ and Ce$^{3+}$ doped Li$_2$MnCl$_4$ that luminescence mechanism involves energy transfer from the dopants to Mn$^{2+}$, and propose the local lattice distortion around the dopant and a possible charge compensation mechanisms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_16178 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Li$_2$MnCl$_4$ single crystal: new candidate for red-emitting neutron scintillator Vanecek, Vojtech Kral, Robert Krehlikova, Katerina Kuverkova, Romana Babin, Vladimir Zemenova, Petra Rohlicek, Jan Malkova, Zuzana Jurkovicova, Terezia Nikl, Martin Materials Science Instrumentation and Detectors Novel red-emitting scintillator Li$_2$MnCl$_4$ is proposed as a candidate for thermal neutron detection. It features high Li content, low density, low effective atomic number, and emission in red-NIR region. These characteristics make it an interesting candidate for long distance neutron detection in harsh enviroments e. g. decomisioning of nuclear powerplants. The absorption spectrum is thoroughly investigated in the scope of Tanabe-Sugano diagram. Luminescence mechanism in the undoped Li$_2$MnCl$_4$ is studied in depth. Doping by Eu$^{2+}$ and Ce$^{3+}$ is introduced as a trial to improve the scintillation efficiency. We show in the Eu$^{2+}$ and Ce$^{3+}$ doped Li$_2$MnCl$_4$ that luminescence mechanism involves energy transfer from the dopants to Mn$^{2+}$, and propose the local lattice distortion around the dopant and a possible charge compensation mechanisms. |
| title | Li$_2$MnCl$_4$ single crystal: new candidate for red-emitting neutron scintillator |
| topic | Materials Science Instrumentation and Detectors |
| url | https://arxiv.org/abs/2408.16178 |