Resumen: The Neutrino Experiment with a Xenon TPC (NEXT), intended to investigate neutrinoless double beta decay, requi- res extremely low background levels. An extensive material screening and selection process to assess the radioactivity of components is underway combining several techniques, including germanium ¿-ray spectrometry performed at the Canfranc Underground Laboratory; recent results of this material screening program are presented here. Idioma: Inglés DOI: 10.1016/j.nuclphysbps.2015.10.024 Año: 2016 Publicado en: Nuclear and Particle Physics Proceedings 273-275 (2016), 2666 - 2668 ISSN: 2405-6014 Factor impacto SCIMAGO: 0.313 - Nuclear and High Energy Physics (Q3)