31304694backscatteringPT2026-03-30 20:21:57UF31304695back scatterNDUF31304696back-scatterNDUF31304697back-scatteringNDUF31304698backscatterNDBT31298688physicochemical processesPTNT31317688electron backscatter diffractionPTNT31317480Rutherford backscattering spectroscopyPTNT31317693electron backscatteringPT