AIP Conference Proceedings [AIP Publishing PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference - Ekaterinburg, Russia (20–23 May 2019)] PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference - Determination of the firing temperature and redox atmosphere of the pottery from the Bronze Age settlement Kamenny Ambar by x-ray diffraction phase analysis