Production of large O-containing neutral hydrocarbon species by a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CH</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></m

Review of Scientific Instruments

2001

Self Cite

Articles you may be interested inTransportable real-time single-particle ion trap mass spectrometer Rev. Sci. Instrum. 76, 064102 (2005); 10.1063/1.1938607 Corona discharge ion mobility spectrometry at reduced pressures Rev. Sci. Instrum. 75, 4656 (2004); 10.1063/1.1809301 Ion preparation systems for atomic isobar reduction in accelerator mass spectrometry AIP Conf. Development of an electrostatic ion guide in chemical ionization mass spectrometry Rev. Sci. Instrum. 69, 4002 (1998); 10.1063/1.1149223Fourier transform ion cyclotron resonance mass spectrometry AIP Conf.The design and construction of a lithium ion attachment mass spectrometer that is used to study the occurrence of free radical intermediates and molecular and atomic species ͑which are not found under ordinary conditions͒ on a real-time basis in the gas phase are described. The newly developed device exhibits several advantages over conventional mass spectrometers. The performance of this equipment was extensively tested and optimized, and experimental tests show that the efficiency and sensitivity of the instrument are moderately high. The main applications and possible future perspectives of this approach are briefly reviewed.

Section: A Optimizationmentioning

confidence: 84%

“…[11][12][13][14][15][16][17][18][19][20] Highlights of the results from the above attempts are briefly summarized here.…”

Section: Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lithium ion attachment mass spectrometry: Instrumentation and features

Selvin

Review of Scientific Instruments

2001

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“…17,18 Briefly, it is a combined plasma flow tube-Li ϩ ion-attachment/mass spectrometer that was constructed to detect the products ͑M͒ by mass analyzing the adduct formation (MϩLi͒ ϩ and to determine their possible source.…”

Section: Methodsmentioning

confidence: 99%

Possible production of C3N4 in the microwave-discharge plasma of C2H2/N2

Journal of Applied Physics

Muraki

Arulmozhiraja

et al. 2000

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C 3 N 4 species were unexpectedly detected in an analysis of the products in a C2H2/N2 microwave discharge using Li+ ion-attachment mass spectrometry. The mass spectra exhibited a Li+ adduct peak at a m/z of 99, which was tentatively assigned to C3N4. The possibility of the production of C3N4 was investigated. Discharge conditions were varied with a view toward increasing the production rate and confirming the presence of this compound in the gas phase. The production rate was found to increase with the nitrogen concentration. Both ab initio and density functional theory calculations were also performed.

“…The method has been successfully applied to the study of neutral and ionic species that emerge from many MW discharge plasmas [15][16][17][18]. In this work, however, mass spectrometric experiments can be carried only in the ionic mode, in the absence of Li + , tuned for the only detection of ionic species through the mass analyzer.…”

Section: Introductionmentioning

confidence: 99%

Direct Mass Spectrometric Study of the Ionic Species Content of a C2HCl3/He/O2 Microwave Discharge Plasma

Takahashi

Plasma Chem Plasma Process

2007

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Direct on-line studies of a C 2 HCl 3 /He/O 2 microwave discharge plasma made possible the evolution and detection of many unfamiliar ionic species. Numerous ionic chlorocarbons, chlorohydrocarbons, oxygenated chlorohydrocarbons, oxygenated hydrocarbon radicals, and simple hydrocarbon species were identified mass spectrometrically as by-products: C m Cl n (m = 1-4, 6, 8; n = 1-8), C m H n Cl x (m = 1-4, 6, 7, 10; n, x = 1-6), C m H n Cl x O y (m = 1-5, 12; n = 1-7; x = 1, 2, 4, 6; y = 1-3), C n H 2nÀ1 O (n = 2, 3), C m H n (m = 2, 4, 6, 8; n = 2, 4), and so on. The studies clearly showed the presence of various unfamiliar positive ionic O-containing species such as C 2 ClO 2 , CCl 3 CO, C 2 H 2 Cl 4 O 2 , and C 4 H 2 Cl 6 O 3 . It is apparent that positive-ion reactions play a significant role in producing many ionic species in the chemistry of C 2 HCl 3 plasmas.