Colorimetric energy sensitive scintillator detectors based on luminescent multilayer designs
| Autor: | Francisco J. Ferrer, Agustín R. González-Elipe, Francisco Yubero, Jorge Gil-Rostra |
|---|---|
| Přispěvatelé: | European Commission, Ministerio de Economía y Competitividad (España), Consejo Superior de Investigaciones Científicas (España), Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Ministerio de Economía y Competitividad (MINECO). España, Agencia Estatal de Investigación. España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Consejo Superior de Investigaciones Científicas (CSIC) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
High energy particle Ion beam Rare-earth phosphors 02 engineering and technology Scintillator Kinetic energy Particle detector 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Electrical and Electronic Engineering Particle beam Instrumentation Characteristic energy Range (particle radiation) business.industry Metals and Alloys Beam-energy monitorin 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Beam-energy monitoring Multilayers Scintillators Radiation detection Optoelectronics Physics::Accelerator Physics 0210 nano-technology business |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | In this work we present a new concept for energy sensitive radiation-beam scintillator detectors based on a luminescent multilayer design, where each layer within the stack consists of a rare-earth-doped highly transparent oxide. For a given type of particle beam (i.e., protons, α particles, etc.), its penetration depth, and therefore its energy loss at a particular buried layer, depends on its initial kinetic energy. Relying on this principle and since the intensity of the luminescent response of each layer and substrate should be proportional to the energy deposited by the radiation beam, we prove that a characteristic energy dependent color emission is obtained depending on both the phosphors integrated in the luminescent stack and on the primary energy and type of particle beam. Phosphor doping, emission efficiency, layer thickness, and multilayer structure design are key parameters to achieve a broad gamut in colorimetric response. The developed scintillators are designed to operate in a transmission geometry (light detection from the opposite side of the incident radiation) which is well suited for high energy particle detection in fields such as oncotherapy, space radiation, or of fusion studies. The principles of the method are illustrated with a case example typical of ion beam accelerators devoted to materials analysis. It is obtained that the kinetic energy of protons/alpha particle beams can be distinguished and evaluated with a sensitivity of 0.06/0.25 chromaticity units per MeV in the 0.7–2.0 MeV range. We thank Spanish Ministry of Economy, Industry and Competitiveness (AEI-FEDER project MAT2016-79866-R, CSIC (201560E055) for financial support. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|