1. Laboratoire National des Champs Magnétiques Intenses, CNRS UPR3228, EMFL, Univ. Grenoble Alpes, Univ. Toulouse, Univ. Toulouse 3, INSA-T, Grenoble and Toulouse, F-38042, France
2. Department of Physics, University of Fribourg, Chemin du Musée 3, CH-1700Fribourg, Switzerland
3. Institute of Physics, Charles University, Ke Karlovu 5, Prague, CZ-121 16, Czech Republic
4. CENTERA Laboratories, Institute of High Pressure Physics, PAS, PL-01-142Warsaw, Poland
5. Univ. Grenoble Alpes, CEA, IRIG, PHELIQS, 17 avenue des Martyrs, F-38000Grenoble, France