Electron impact ionization cross-sections of plasma relevant and astrophysical silicon compounds: SiH4, Si2H6, Si(CH3)4, SiO, SiO2, SiN and SiS

Joshipura, K. N.; Vaishnav, B. G.; Gangopadhyay, Sumona

doi:10.1016/j.ijms.2006.08.014

Cited by 38 publications

(47 citation statements)

References 30 publications

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“…Since the ionization corresponds to transitions in continuum, Q ion is expected to dominate in Q in at high enough energy. Therefore, as in the case of electrons [1,[28][29][30][31], the present ratio function may also be expected to rise as E i increases above I , and approaches almost unity at high energies, such that…”

Section: Theorymentioning

confidence: 94%

“…This aspect is discussed fully in our recent papers [1,[28][29][30][31]. In the present case we have adopted [1,2] the following energy dependence of the delta parameter in our absorption potential:…”

Section: Theorymentioning

confidence: 99%

“…Our aim is now to deduce Q ion from our calculated Q inel in the same way as in the electron scattering. Hence to find the contribution of Q ion in Q inel we introduce a method which we have applied previously [1,23,[28][29][30][31] for electron impact on several atomic and molecular targets. To proceed along these lines, we have to first obtain Q inel without Ps-formation cross-section.…”

Section: Theorymentioning

confidence: 99%

“…(8) is discussed in our previous papers [1,[28][29][30][31]. The two-term representation of f (U ) given in eq.…”

Section: Theorymentioning

confidence: 99%

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Total and ionization cross-sections of N2 and CO by positron impact: Theoretical investigations

Kothari

Joshipura

2011

Pramana - J Phys

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In this paper we report our calculations on several important total cross-sections (TCSs) of positron impact on isoelectronic N 2 and CO molecules, treated in the complex spherical potential formalism. Basically the total (complete) cross-section Q T consists of elastic and inelastic contributions. Our total inelastic cross-section (Q inel ) contains ionization and electronic excitations together with positronium formation. Our goal here is to bifurcate Q inel further to deduce total ionization cross-section, using the 'complex scattering potential-ionization contribution' (CSP-ic) method of electron-atom/molecule scattering. The present range of positron energy is 15-2000 eV. All the resulting cross-sections are in a good general accord with the existing data. This work highlights the importance of various scattering channels in e + -N 2 and e + -CO interactions at intermediate and high energies.

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Section: Theorymentioning

confidence: 94%

Section: Theorymentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

“…(8) is discussed in our previous papers [1,[28][29][30][31]. The two-term representation of f (U ) given in eq.…”

Section: Theorymentioning

confidence: 99%

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Total and ionization cross-sections of N2 and CO by positron impact: Theoretical investigations

Kothari

Joshipura

2011

Pramana - J Phys

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“…The imaginary potential term referred to as the absorption potential and denoted by V abs was given by Staszewska et al [8]. Modification in the original V abs is discussed in [9][10][11]. The Schrödinger equation with the modified V abs is solved by the variable phase approach [12], in order to determine Q el , Q inel and Q T [13].…”

Section: Theorymentioning

confidence: 99%

Electron and Positron Impact Ionization Cross Sections of O and Hg Atoms

Pindariya¹,

Chaudhari

Joshi³

et al. 2018

Jour. Atomic Mole. Conden. Nano Phys.

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Total ionization crosssections for O and Hg atoms have been calculated for electron and positron impact scattering. A quantum mechanical formulation originating from complex atomic spherical potential is adapted in the scattering calculations on two targets. Then we obtain total ionization cross sections and cumulative total excitation cross sections by applying variant CSP-ic method. Our calculated results are presented for impact energy starting from the first threshold of ionization and going up to about 2000 electron volts (eV). For positron-atom scattering, our total inelastic cross sections include positronium formation together with ionization and excitation channels. Because of Ps formation channel it is difficult to separate our ionization cross sections from the total inelastic cross sections. An approximate method has been applied in this regard. Electron impact studies on Hg atom are scarce in literature. Similarly positron impact ionization in relation to electronic ionization discussed presently has not been highlighted much.

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Current literature in mass spectrometry

2007

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Reviews; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (4 Weeks journals ‐ Search completed at 29th. June 2007)

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Electron impact ionization cross-sections of plasma relevant and astrophysical silicon compounds: SiH4, Si2H6, Si(CH3)4, SiO, SiO2, SiN and SiS

Cited by 38 publications

References 30 publications

Total and ionization cross-sections of N2 and CO by positron impact: Theoretical investigations

Total and ionization cross-sections of N2 and CO by positron impact: Theoretical investigations

Electron and Positron Impact Ionization Cross Sections of O and Hg Atoms

Current literature in mass spectrometry

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