Ionization efficiency curves and fragmentations of deuterated ethylenes by electron impact

Suzuki, Isao; Maeda, Kogoro

doi:10.1016/0020-7381(74)85005-9

Cited by 8 publications

(3 citation statements)

References 15 publications

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“…Apart from the two processes shown above, there is a possibility that a scrambling process participates in the formation of the ion (8,12). In this process the exchange of hydrogen atoms is presumed to occur through an intermediate bridged structure…”

Section: Formation Of C2x4+mentioning

confidence: 98%

“…Figure 3 is consistent with this interpretation; the indicated ratio of about 0.2 is a little smaller than the expected value 0.25 in all the energies observed. The difference of the ratios is due to the fact that the lighter neutral isotopic species departs faster than the heavier from the scrambling ion (9,10,12). If scrambling occurs in C2X6+, the ratio is calculated to be 0.33.…”

Section: Formation Of C2x4+mentioning

confidence: 99%

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Behavior of hydrogen atoms in the fragmentation of CH₃CD₃

Suzuki¹,

Maeda²

1977

Can. J. Chem.

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ISAO H. SUZUKI and KOGORO MAEDA. Can. J. Chem. 55,3 124 (1977).The behavior of hydrogen atoms in the fragmentation of CH3CD3 has been studied by use of a monoenergetic electron beam. Ionization efficiency curves for ions (mle 3,4, 15 to 18,26 to 33) from CH3CD3 have been measured over ranges of 12 to 30eV near their appearance thresholds. Mass spectra over various ranges of mle have been measured at several electron energies. It has been found that at least two processes participate in the formation of CzX4+ and CH3+ (X = H or D) and the rates of these processes depend on the energy of electron beam. The formations of C2X2+ and X2+ are independent of the electron energy.

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Section: Formation Of C2x4+mentioning

confidence: 98%

Section: Formation Of C2x4+mentioning

confidence: 99%

Behavior of hydrogen atoms in the fragmentation of CH₃CD₃

Suzuki¹,

Maeda²

1977

Can. J. Chem.

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“…Therefore, the abundance of a particular ionic fragment is determined by the ionization probability of the inner valance electrons. The appearance potential of CH + 2 ion, that is, the minimum energy needed to form the fragment from a neutral molecule in its ground state, has been measured to be 18.4 eV [23]. In the presence of laser field, this will be reduced by ΔE ≈ 0.5 FR, where R is the size of ion and F is the strength of the field [24].…”

Section: Propene (C 3 H 6 ) the Ion Yield Versus Peak Intensity Plotmentioning

confidence: 99%

Double Ionization of Unsaturated Hydrocarbons Interacting with High-Power Femtosecond Laser Pulses

Sharifi

Talebpour

Chin

2009

Journal of Atomic, Molecular, and Optical Physics

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Mass Spectrometry, High‐Resolution, (Homolog)‐Type Analysis of Petroleum and Synfuel Distillates and Refinery Streams

Scheppele¹

2000

Encyclopedia of Analytical Chemistry

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The complex chemistry and chemical engineering of fossil fuel materials including petroleums, coal‐derived liquids, tar sands, shale oils, refinery streams and refined products can often be adequately simplified by expressing the composition of these materials in terms of group types. Group (chemical) types are series of homologous compounds that exhibit similar chemical properties and a regular gradation of physical properties. A homologous series of compounds, the members of which are termed homologs, contains compounds in which successive members exhibit the same difference in chemical formula with the homologous unit of present interest being CH 2 . Mass spectrometry (MS) is an ideal, extensively used technique in analyzing for chemical types in terms either of the total amounts of the various homologous series of compounds present in a sample or of the individual members (homologs) of the various series of homologous compounds present in a sample. The focus of this article is the fundamentals of homolog‐type analysis because analyses expressed in terms of the amounts of individual homologs rather then in terms of the total amounts of group types benefits the understanding/prediction of the effect of experimental conditions on feedstock production/transportation, product distributions in feedstock refining, end‐product quality and environmental impacts. A homolog‐type analysis also permits the determination/prediction of chemical/physical properties of a sample that can be expressed as a function of composition; examples being reaction rates, distillation curves and elemental analyses. The discussion of techniques for obtaining the “molecular ion mass spectra” required to produce homolog‐type analyses focuses on the use of all glass heated inlet systems (AGHIS) and direct probes for sample introduction, low‐voltage electrons for ion formation, and double focusing magnetic sector (DF) and Fourier transform ion cyclotron resonance (FTICR) mass analyzers to resolve isobaric ions.

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Ionization efficiency curves and fragmentations of deuterated ethylenes by electron impact

Cited by 8 publications

References 15 publications

Behavior of hydrogen atoms in the fragmentation of CH₃CD₃

Behavior of hydrogen atoms in the fragmentation of CH₃CD₃

Double Ionization of Unsaturated Hydrocarbons Interacting with High-Power Femtosecond Laser Pulses

Mass Spectrometry, High‐Resolution, (Homolog)‐Type Analysis of Petroleum and Synfuel Distillates and Refinery Streams

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Ionization efficiency curves and fragmentations of deuterated ethylenes by electron impact

Cited by 8 publications

References 15 publications

Behavior of hydrogen atoms in the fragmentation of CH3CD3

Behavior of hydrogen atoms in the fragmentation of CH3CD3

Double Ionization of Unsaturated Hydrocarbons Interacting with High-Power Femtosecond Laser Pulses

Mass Spectrometry, High‐Resolution, (Homolog)‐Type Analysis of Petroleum and Synfuel Distillates and Refinery Streams

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Product

Resources

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Behavior of hydrogen atoms in the fragmentation of CH₃CD₃

Behavior of hydrogen atoms in the fragmentation of CH₃CD₃