scholarly journals Application of an Ion Attachment Mass Spectrometer to Direct Detection of Intermediate Species Formed in Dimethyl Ether-Air and Ethanol-Air Flames

2009 ◽  
Vol 57 (5) ◽  
pp. 341-343 ◽  
Author(s):  
Takahiro TORII ◽  
Hae-Yang PAK ◽  
Kozo MATSUMOTO ◽  
Kuniyuki KITAGAWA
Keyword(s):  
Dimethyl Ether ◽  
Mass Spectrometer ◽  
Direct Detection ◽  
Intermediate Species ◽  
Ion Attachment

Development of an ion attachment mass spectrometer for direct detection of intermediates in combustion flames

2008 ◽  
Vol 22 (22) ◽  
pp. 3588-3592 ◽  
Author(s):  
Takahiro Torii ◽  
Takashi Nishimura ◽  
Megumi Nakamura ◽  
Yoshiro Shiokawa ◽  
Kozo Matsumoto ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Direct Detection ◽  
Ion Attachment

The reaction of active nitrogen with fluoroethylenes

1982 ◽  
Vol 60 (20) ◽  
pp. 2629-2633 ◽  
Author(s):  
William E. Jones ◽  
Mahmooda G. Ahmed
Keyword(s):  
Mass Spectrometer ◽  
Reaction Mechanisms ◽  
Flow System ◽  
Intermediate Species ◽  
Active Nitrogen ◽  
Reacting Mixtures

The reactions of active nitrogen with the fluoroethylenes C2H3F, 1,1-C2H2F2, C2HF3, and C2F4 have been investigated in a conventional flow system using a mass spectrometer to detect products and intermediate species. Addition of various gases (H, H2, NH3, CH4, N2O, [Formula: see text], and F) to the reacting mixtures provides evidence that both Hand F atoms play significant roles in the reaction mechanisms, while [Formula: see text] does not. A brief discussion of possible mechanisms is presented.

scholarly journals A laser and molecular beam mass spectrometer study of low-pressure dimethyl ether flames

2000 ◽  
Vol 28 (2) ◽  
pp. 1647-1653 ◽  
Author(s):  
Andrew Mcilroy ◽  
Toby D. Hain ◽  
Hope A. Michelsen ◽  
Terrill A. Cool
Keyword(s):  
Dimethyl Ether ◽  
Mass Spectrometer ◽  
Molecular Beam ◽  
Low Pressure

Development of a tabletop time-of-flight mass spectrometer with an ion attachment ionization technique

2007 ◽  
Vol 21 (16) ◽  
pp. 2654-2662 ◽  
Author(s):  
Naoaki Saito ◽  
Jyun-ichi Nanjyo ◽  
Yasuyuki Taneda ◽  
Yoshiro Shiokawa ◽  
Mitsumori Tanimoto
Keyword(s):  
Mass Spectrometer ◽  
Time Of Flight ◽  
Ionization Technique ◽  
Flight Mass Spectrometer ◽  
Ion Attachment

Untersuchung der Photodissoziation von Butadien-(1,3), Buten-(1), Hydrazin und Akrolein im Massenspektrometer

1967 ◽  
Vol 22 (12) ◽  
pp. 2027-2035 ◽  
Author(s):  
K. Bergmann ◽  
W. Demtröder
Keyword(s):  
High Pressure ◽  
Excited State ◽  
Mass Spectrometer ◽  
Wavelength Range ◽  
Molecular Beam ◽  
Direct Detection ◽  
Reaction Chamber ◽  
Special Technique ◽  
Absorption Bands ◽  
Ion Chamber

The primary processes in the photodissociation of 1,3-butadiene, 1-butene, hydrazine and acrolein are investigated by direct detection of the fragments in a mass spectrometer at pressures of 10-4mm Hg in the reaction chamber. The light of a pulsed high pressure argon flash lamp is focussed into a molecular beam inside the ion-chamber. A definite wavelength-range of this light continuum is selected by the transmission limit of the quartz optic and the absorption bands of the molecules under investigation. With the special technique used here, collisions do not occur during the time between photon impact and primary product detection. The resulting primary photodissociation fragments are as follows:a) butadiene: C3H3 + CH3; C4H5 + H; C2H4 + C2H2; C2H3 + C2H3; C4H4 + H2b) 1-butene: C4H7 + H; C3H5 + CH3; C2H4 + C2H4; C2H5 + C2H3c) hydrazine: N2H3 + H; NH2 + NH2d) acrolein: C2H2CHO + H; C2H4 + CO; C2H3 + HCO.The probabilities for these different dissociation modes are derived from the measured ion spectra of the neutral photodissociation fragments that are produced by electrons of different energies. A comparison is made with results of photolysis at higher pressures and some conclusions concerning the original excited state of the parentmolecules and fragment energies are discussed.

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