Cross-section studies of cyanoacetylene by electron impact. (2nd November 2016)

• Record Type: Journal Article
• Authors: Kaur, Jaspreet; Mason, Nigel; Antony, Bobby
• Is Part Of: Journal of physics. Volume 49:Number 22(2016:Nov. 15)
• Publication Date: 2016-11-02
• Subjects: cyanoacetylene -- electron-impact cross-section -- dissociative electron attachment -- R-matrix method -- SCOP formalism; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/0953-4075/49/22/225202
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: The present article provides the first comprehensive study of electron scattering from the cyanoacetylene molecule. The results reported here include integral elastic cross-sections over a wide energy range (0.5 to 5000 eV) and differential, momentum transfer and electronic excitation cross-sections at low energies (<10 eV). For the computation of cross-sections over such a wide energy range, two formalisms are employed: the ab initio R-matrix method and the spherical complex-optical-potential method operating at low and high incident energies, respectively. The total ionization cross-section has also been calculated using the complex scattering potential-ionization contribution method and shows excellent agreement with previously reported values. The target parameters and resonance positions predicted by the R-matrix method are in reasonable agreement with, albeit limited, previous data. The resonances identified at low energies are associated to several dissociative electron-attachment channels.