Emission Spectroscopy of the Combustion Flame of Aluminium/Copper Oxide Thermite. Issue 1 (20th December 2018)

• Record Type: Journal Article
• Authors: Knapp, Sebastian; Kelzenberg, Stefan; Raab, Angelika; Roth, Evelin; Weiser, Volker
• Is Part Of: Propellants, explosives, pyrotechnics. Volume 44:Issue 1(2019)
• Page Start: 9
• Page End: 17
• Publication Date: 2018-12-20
• Subjects: Emission -- Thermite -- Combustion -- UV/VIS-spectroscopy; Propellants -- Periodicals; Explosives -- Periodicals; 662.2
• DOI: 10.1002/prep.201800235
• Languages: English
• ISSNs: 0721-3115

Abstract

Abstract: The combustion process of stoichiometric aluminium/copper(II)oxide thermite was experimentally investigated in an optical bomb under inert atmosphere (N2 ) and ambient pressure. The reaction zone was monitored with UV/VIS emission spectroscopy and a colour high‐speed camera. The emission spectra were analysed by modelling of the background radiation and the characteristic emission of all molecular emitters in the reaction of Al/CuO. Based on this, the particles′ surface and gas phase temperature, the emissivity and the radiation of energy was determined by a non‐linear least squares fit between experimental and modelled spectra. This work presents the first modelling of the diatomic band system of Cu2 and CuO. The results obtained can help to understand the underlying processes in thermite combustion and the influence of radiation processes in modelling the combustion of thermite mixtures. Abstract :