1 IFIMUP, Institute of Physics for Advanced Materials, Nanotechnology and Photonics, Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal. marcelo.barbosa@fc.up.pt.
2 Department of Physics, Faculty of Science, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore. marcelo.barbosa@fc.up.pt.
3 C2TN, DECN, Instituto Superior Técnico, Universidade de Lisboa, Bobadela, Portugal.
4 EP Department, European Organization for Nuclear Research (CERN), 1211, Geneva, Switzerland.
5 INESC-MN, IPFN, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
6 IFIMUP, Institute of Physics for Advanced Materials, Nanotechnology and Photonics, Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal.
7 Physics Department and CICECO, University of Aveiro, 3810-193, Aveiro, Portugal.
8 KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, 3001, Leuven, Belgium.
9 Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141, Essen, Germany.
10 Departamento de Física de Materiales, Universidad Complutense de Madrid, 28040, Madrid, Spain.
11 CNR-SPIN c/o Università degli Studi dell'Aquila, Via Vetoio 10, 67010, Coppito, L'Aquila, Italy.