Elsevier B.V. : Production and optical characterisation of blended Polyethylene Terephthalate (PET)/Polyethylene Naphthalate (PEN) scintillator samples

Conde Muíño, P.; Covas, J.A.; Machado, R.; Pereira, B.; Pontes, A.J.; Martins, T.; Gurriana, L.; Mendes, P.; Pedro, R.; Wilkens, H.; Gomes, A.

doi:10.1016/j.nima.2024.169627

Article
Report number	arXiv:2312.14790
Title	Production and optical characterisation of blended Polyethylene Terephthalate (PET)/Polyethylene Naphthalate (PEN) scintillator samples
Author(s)	Conde Muíño, P. (LIP, Lisbon ; Lisbon, CENTRA) ; Covas, J.A. (Minho U.) ; Gomes, A. (LIP, Lisbon ; Lisbon U.) ; Gurriana, L. (LIP, Lisbon) ; Machado, R. (LIP, Lisbon ; Lisbon, CENTRA) ; Martins, T. (Minho U.) ; Mendes, P. (LIP, Lisbon) ; Pedro, R. (LIP, Lisbon ; Lisbon, CENTRA) ; Pereira, B. (LIP, Lisbon ; Lisbon, CENTRA) ; Pontes, A.J. (Minho U.) ; Wilkens, H. (CERN)
Publication	2024-07-17
Imprint	2023-12-22
Number of pages	6
In:	Nucl. Instrum. Methods Phys. Res., A 1066 (2024) 169627
DOI	10.1016/j.nima.2024.169627 (publication)
Subject category	hep-ex ; Particle Physics - Experiment ; physics.ins-det ; Detectors and Experimental Techniques
Abstract	In Particle and Nuclear Physics research and related applications, organic scintillators provide a cost-effective technology for the detection of ionising radiation. The next generation of experiments in this field is driving fundamental research and development on these materials, demanding improved light yield, radiation hardness, and fast response. Common materials such as PEN and PET have been found to offer scintillation properties competitive to commercial alternatives without the use of dopants. Motivated by their complementarity in terms of light yield, radiation hardness, and response time, there is an increasing interest in investigating PET:PEN mixtures to ascertain whether they exhibit synergistic blending. This paper presents results from the systematic development of samples of PET, PEN, and PET:PEN mixtures with varied mass proportions. The manufacturing technique, involving injection moulding of granule raw material, is detailed. The effects of doping the polymer base substrate with fluorescent dopants are explored. Finally, the emission spectra of the different material compositions and their relative light output are presented.
Copyright/License	preprint: (License: CC BY 4.0) publication: © 2024-2025 The Authors (License: CC BY 4.0)