Theoretical and experimental evaluation of piezo-optic parameters and photoelastic constant in tetragonal PWO

PP Natali, L Montalto, F Daví, P Mengucci, A Ciriaco… - Applied Optics, 2018 - opg.optica.org
The tetragonal PbWO_4 (PWO) is one of the most important scintillating crystals, being used
both in the Compact Muon Solenoid (CMS) experiment at the European Organization for …

On the photoelastic constants and the Brewster law for stressed tetragonal crystals

D Rinaldi, F Daví, L Montalto - Mathematical Methods in the …, 2018 - Wiley Online Library
An exact knowledge of the mechanical and optical properties of crystals allows not only for
theoretical advances, but it is also a useful tool to asses crystal quality in the technological …

On the Bertin surfaces of photoelastic crystals

F Daví - JOSA A, 2015 - opg.optica.org
Conoscopic analysis of interference fringes is one of the most useful tools for investigating
the mechanical properties of a crystal. These fringes are generated by a surface of constant …

Noninvasive inspection of anisotropic crystals: Innovative photoelasticity-based methods

PP Natali, L Montalto, D Rinaldi, F Davi… - … on Nuclear Science, 2018 - ieeexplore.ieee.org
The mass production of new generations of high quality and very performant scintillating
crystals requires sophisticated measurement systems and inspection tools in order to have …

Characterization of a defective PbWO4 crystal cut along the ac crystallographic plane: structural assessment and a novel photoelastic stress analysis

L Montalto, PP Natali, F Davi, P Mengucci… - Journal of …, 2017 - iopscience.iop.org
Among scintillators, the PWO is one of the most widely used, for instance in CMS calorimeter
at CERN and PANDA project. Crystallographic structure and chemical composition as well …

Quality control and structural assessment of anisotropic scintillating crystals

L Montalto, PP Natali, L Scalise, N Paone, F Davì… - Crystals, 2019 - mdpi.com
Nowadays, radiation detectors based on scintillating crystals are used in many different
fields of science like medicine, aerospace, high-energy physics, and security. The …

Photoelastic sphenoscopic analysis of crystals

L Montalto, D Rinaldi, L Scalise, N Paone… - Review of Scientific …, 2016 - pubs.aip.org
Birefringent crystals are at the basis of various devices used in many fields, from high energy
physics to biomedical imaging for cancer detection. Since crystals are the main elements of …

Influence of a surface finishing method on light collection behaviour of PWO scintillator crystals

D Rinaldi, L Montalto, M Lebeau, P Mengucci - Photonics, 2018 - mdpi.com
In the field of scintillators, high scintillation and light production performance require high-
quality crystals. Although the composition and structure of crystals are fundamental in this …

On the photoelastic constants for anisotropic stressed crystals

D Rinaldi, F Daví, L Montalto - Nuclear Instruments and Methods in Physics …, 2019 - Elsevier
The need for high-quality and high-performance crystals for high-energy physics (eg
scintillators) and biomedical applications require a good knowledge of their mechanical and …

Elasto-optic properties and internal stress analysis for monoclinic and trigonal crystals

D Rinaldi, L Montalto, PP Natali… - Journal of …, 2021 - iopscience.iop.org
We study the elasto-optic behaviour of monoclinic and trigonal crystals. The eigenvalues
and eigenvectors of the dielectric impermeability tensor under stress are evaluated by the …