Dissociative Electron Attachment to the Nitroamine HMX (Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine)Click to copy article linkArticle link copied!
- Johannes PostlerJohannes PostlerInstitut für Ionenphysik und Angewandte Physik, Technikerstr. 25 / 3, A-6020, Innsbruck, AustriaMore by Johannes Postler
- Marcelo M. GoulartMarcelo M. GoulartInstitut für Ionenphysik und Angewandte Physik, Technikerstr. 25 / 3, A-6020, Innsbruck, AustriaCAPES Foundation, Ministry of Education of Brazil, 70040-020, Brasilia, DF, BrazilMore by Marcelo M. Goulart
- Carolina MatiasCarolina MatiasInstitut für Ionenphysik und Angewandte Physik, Technikerstr. 25 / 3, A-6020, Innsbruck, AustriaMore by Carolina Matias
- Andreas MauracherAndreas MauracherInstitut für Ionenphysik und Angewandte Physik, Technikerstr. 25 / 3, A-6020, Innsbruck, AustriaMore by Andreas Mauracher
- Filipe Ferreira da SilvaFilipe Ferreira da SilvaLaboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, PortugalMore by Filipe Ferreira da Silva
- Paul ScheierPaul ScheierInstitut für Ionenphysik und Angewandte Physik, Technikerstr. 25 / 3, A-6020, Innsbruck, AustriaMore by Paul Scheier
- Paulo Limão-VieiraPaulo Limão-VieiraLaboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, PortugalMore by Paulo Limão-Vieira
- Stephan DeniflStephan DeniflInstitut für Ionenphysik und Angewandte Physik, Technikerstr. 25 / 3, A-6020, Innsbruck, AustriaMore by Stephan Denifl
Abstract
In the present study, dissociative electron attachment (DEA) measurements with gas phase HMX, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, C4H8N8O8, have been performed by means of a crossed electron-molecular beam experiment. The most intense signals are observed at 46 and 176 u and assigned to NO2− and C3H6N5O4−, respectively. Anion efficiency curves for 15 negatively charged fragments have been measured in the electron energy region from about 0–20 eV with an energy resolution of ~0.7 eV. Product anions are observed mainly in the low energy region, near 0 eV, arising from surprisingly complex reactions associated with multiple bond cleavages and structural and electronic rearrangement. The remarkable instability of HMX towards electron attachment with virtually zero kinetic energy reflects the highly explosive nature of this compound. Substantially different intensity ratios of resonances for common fragment anions allow distinguishing the nitroamines HMX and royal demolition explosive molecule (RDX) in negative ion mass spectrometry based on free electron capture.
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