PADC nuclear track detector for ion spectroscopy in laser-plasma acceleration |
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| Institution: | 1. Instituto de Instrumentación para Imagen Molecular (I3M), CSIC-Universitat Politècnica de València, Valencia, Spain;2. Instituto Galego de Física das Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain;3. Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, Sevilla, Spain;4. Centro Nacional de Aceleradores (CNA), Universidad de Sevilla-CSIC-Junta de Andalucía, Sevilla, Spain;1. Department of Cosmetic Science and Application, Lan Yang Institute of Technology, No. 79, Fushin Rd., Touchen Town, Yilan County 261, Taiwan, ROC;2. Department of Environmental Engineering, National Chung Hsing University, No. 250, Kuo Kuang Rd., South Dist., Taichung City 402, Taiwan, ROC;1. KU Leuven, Medical Physics & Quality Assessment Group, Herestraat 49, B-3000 Leuven, Belgium;2. SCK CEN, Radiation Protection Dosimetry and Calibration, Boeretang 200, 2400 Mol, Belgium;3. UZ Gasthuisberg, Department of Radiology, Herestraat 49, B-3000 Leuven, Belgium;1. Department of Radiation Oncology, La Fe Polytechnic and University Hospital, Valencia, Spain;2. Department of Physical Therapy, University of Valencia, Spain;3. Department of Electronic Engineering, University of Valencia, Spain;4. Department of Radiation Oncology, Fundación Instituto Valenciano de Oncología, Valencia, Spain;5. PTW Dosimetría Iberia SLU, Spain;1. The Skandion Clinic, Uppsala, Sweden;2. Department of Physics, Medical Radiation Physics, Stockholm University, Stockholm, Sweden;3. RaySearch Laboratories AB, Stockholm, Sweden;4. Department of Oncology and Pathology, Medical Radiation Physics, Karolinska Institutet, Stockholm, Sweden |
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| Abstract: | The transparent polymer polyallyl-diglycol-carbonate (PADC), also known as CR-39, is widely used as detector for heavy charged particles at low fluence. It allows for detection of single protons and ions via formation of microscopic tracks after etching in NaOH or KOH solutions. PADC combines a high sensitivity and high specificity with inertness towards electromagnetic noise. Present fields of application include laser-ion acceleration, inertial confinement fusion, radiobiological studies with cell cultures, and dosimetry of nuclear fragments in particle therapy. These require precise knowledge of the energy-dependent response of PADC to different ion species. We present calibration data for a new type of detector material, Radosys RS39, to protons (0.2–3 MeV) and carbon ions (0.6–12 MeV). RS39 is less sensitive to protons than other types of PADC. Its response to carbon ions, however, is similar to other materials. Our data indicate that RS39 allows for measuring carbon ion energies up to 10 MeV only from the track diameters. In addition, it can be used for discrimination between protons and carbon ions in a single etching process. |
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| Keywords: | Solid state nuclear track detector CR-39 PADC Proton Carbon ion |
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