Electron energy-loss spectra of acetaldehyde and formic acid

Ari, Tayfun; Hasted, J. B.

doi:10.1016/0009-2614(82)80321-7

Cited by 11 publications

(7 citation statements)

References 11 publications

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“…Electron energy loss spectra (EELS) of formic acid have been measured in the 6.5-9.5 eV region 18 and in the 5-16 eV region. 19,20 Conflicting aspects and assignments of valence shell and Rydberg transitions have been discussed on the basis of the respective EELS studies and comparison with optical absorption spectra.…”

Section: Absorption Spectra: General Characteristicsmentioning

confidence: 99%

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Photophysical studies of formic acid in the VUV. Absorption spectrum in the 6–22 eV region

Leach

Schwell

Dulieu

et al. 2002

Phys. Chem. Chem. Phys.

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Section: Absorption Spectra: General Characteristicsmentioning

confidence: 99%

“…[15][16][17] No previous measurements of the ionization yields of formic acid have been reported. Electron energy loss spectra [18][19][20] of HCOOH, limited to about 15 eV, did not fully resolve the Rydberg transitions. monochromator vacuum by a 1 mm thick stainless steel microchannel plate (MCP).…”

Section: Introductionmentioning

confidence: 99%

Photophysical studies of formic acid in the VUV. Absorption spectrum in the 6–22 eV region

Leach

Schwell

Dulieu

et al. 2002

Phys. Chem. Chem. Phys.

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“…Measured cross sections for vibrational excitation by electron impact have shown both the p* shape resonance 9,10 at about 1.2 eV, and a broad peak at 6.8 eV, assigned to one or more s* resonances. 10 Other measurements have determined thresholds and, in some cases, relative cross sections for electronic excitation, 7,[10][11][12][13][14][15] while still others have examined dissociative electron attachment. 10,[16][17][18] Burean and Swiderek 19 have studied the chemistry induced in condensed acetaldehyde by low-energy electron impact.…”

Section: Introductionmentioning

confidence: 99%

Electron induced chemistry for acetaldehyde

Vinodkumar¹,

Limbachiya

Desai

et al. 2015

RSC Adv.

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A detailed theoretical study is carried out for electron interactions with acetaldehyde (CH 3 CHO) with impact energies ranging from 0.01 to 5000 eV. Owing to the wide energy range we have been able to investigate variety of processes and report data on Dissociative Electron Attachment (DEA) through resonances, vertical electronic excitation energies, differential, momentum transfer, ionization and total cross sections (TCS) as well as scattering rate coefficients. In order to compute TCS we have employed ab initio R-matrix method (0.01 to $20 eV) and the spherical complex optical potential (SCOP) method ($20 to 5000 eV). The Rmatrix calculations are performed using close coupling method employing static exchange plus polarization model. We have employed different target models and basis sets to study their effect on the target parameters as well as total cross sections. We observed two strong resonances, one at 1.33 eV which corresponds to 2A 00 symmetry with a width of 0.1726 eV which is in agreement with 1.30 predicted earlier experimentally by van Veen et al. and other resonance at 10.03 eV of 2A 0 symmetry with 0.0688 eV width which is close to 10.00 eV reported experimentally by Szymanska. The first peak corresponds to capture of an electron in to the lowest vacant p* orbital of the carbonyl group while the second corresponds to s* core excited shape resonance which is responsible for the O À fragment. We observed many fragments of CH 3 CHO in our eigenphase sum study which are in accordance with the earlier reported data. The scattering rate coefficients and theoretical TCS data beyond 30 eV are reported for the first time. Further, no experimental data for TCS is available beyond 400 eV to the best of our knowledge. We have compared all our results with available data in the literature and found overall good agreement. Due to dearth of TCS data for acetaldehyde, we have also compared the TCS of acetaldehyde with its analogue targets such as formic acid, formaldehyde, formamide and ethylene oxide and drawn conclusions.

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“…Whilst studies of the photon spectroscopy of acetaldehyde [5][6][7][8][9] are comprehensive there is less data on the interaction of electrons with acetaldehyde. Electron energy loss spectra of acetaldehyde have been reported by several groups [10][11][12][13][14] and an earlier study of the electronic structure and decay channels of the acetaldehyde negative ion 15 has been reported. The discovery of CN À , C 3 N À , C 5 N À , C 4 H À , C 6 H À and C 8 H À anions in space 16 has led to renewed intrest in the possible role of DEA in cosmic rays/VUV irradiation of astrochemical ices.…”

Section: Introductionmentioning

confidence: 99%

Dissociative electron attachment to acetaldehyde, CH₃CHO. A laboratory study using the velocity map imaging technique

Szymańska

Prabhudesai

Mason

et al. 2013

Phys. Chem. Chem. Phys.

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Electron energy-loss spectra of acetaldehyde and formic acid

Cited by 11 publications

References 11 publications

Photophysical studies of formic acid in the VUV. Absorption spectrum in the 6–22 eV region

Photophysical studies of formic acid in the VUV. Absorption spectrum in the 6–22 eV region

Electron induced chemistry for acetaldehyde

Dissociative electron attachment to acetaldehyde, CH₃CHO. A laboratory study using the velocity map imaging technique

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Electron energy-loss spectra of acetaldehyde and formic acid

Cited by 11 publications

References 11 publications

Photophysical studies of formic acid in the VUV. Absorption spectrum in the 6–22 eV region

Photophysical studies of formic acid in the VUV. Absorption spectrum in the 6–22 eV region

Electron induced chemistry for acetaldehyde

Dissociative electron attachment to acetaldehyde, CH3CHO. A laboratory study using the velocity map imaging technique

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Product

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Dissociative electron attachment to acetaldehyde, CH₃CHO. A laboratory study using the velocity map imaging technique