Photodissociation of silicon carbide cluster cations

B. W. Ticknor; M. A. Duncan

doi:10.1016/j.cplett.2005.02.046

Photodissociation of silicon carbide cluster cations

B. W. Ticknor, M. A. Duncan

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Abstract

Small clusters of silicon carbide (SixCy+,x=3-10,y=1-2) are produced by laser vaporization in a pulsed molecular beam and detected with time-of-flight mass spectrometry. Specific clusters are mass selected and photodissociated at 355 nm. Si₃C⁺ is an especially abundant cluster in the mass spectrum, and it is produced often as a fragment from larger clusters, suggesting that it is relatively more stable than other small cations. The smaller clusters (Si_3-5C⁺) fragment primarily by the loss of neutral Si atoms, while larger clusters (Si_7-10C⁺) lose neutral Si₂C and Si₃C, which are concluded to be more stable neutrals.

Original language	English
Pages (from-to)	214-219
Number of pages	6
Journal	Chemical Physics Letters
Volume	405
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2005.02.046
State	Published - Mar 31 2005
Externally published	Yes

Funding

We gratefully acknowledge the Air Force Office of Scientific Research for support of this work (Grant No. F49620-03-1-0044).

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10.1016/j.cplett.2005.02.046

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title = "Photodissociation of silicon carbide cluster cations",

abstract = "Small clusters of silicon carbide (SixCy+,x=3-10,y=1-2) are produced by laser vaporization in a pulsed molecular beam and detected with time-of-flight mass spectrometry. Specific clusters are mass selected and photodissociated at 355 nm. Si3C+ is an especially abundant cluster in the mass spectrum, and it is produced often as a fragment from larger clusters, suggesting that it is relatively more stable than other small cations. The smaller clusters (Si3-5C+) fragment primarily by the loss of neutral Si atoms, while larger clusters (Si7-10C+) lose neutral Si2C and Si3C, which are concluded to be more stable neutrals.",

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doi = "10.1016/j.cplett.2005.02.046",

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AU - Ticknor, B. W.

AU - Duncan, M. A.

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N2 - Small clusters of silicon carbide (SixCy+,x=3-10,y=1-2) are produced by laser vaporization in a pulsed molecular beam and detected with time-of-flight mass spectrometry. Specific clusters are mass selected and photodissociated at 355 nm. Si3C+ is an especially abundant cluster in the mass spectrum, and it is produced often as a fragment from larger clusters, suggesting that it is relatively more stable than other small cations. The smaller clusters (Si3-5C+) fragment primarily by the loss of neutral Si atoms, while larger clusters (Si7-10C+) lose neutral Si2C and Si3C, which are concluded to be more stable neutrals.

AB - Small clusters of silicon carbide (SixCy+,x=3-10,y=1-2) are produced by laser vaporization in a pulsed molecular beam and detected with time-of-flight mass spectrometry. Specific clusters are mass selected and photodissociated at 355 nm. Si3C+ is an especially abundant cluster in the mass spectrum, and it is produced often as a fragment from larger clusters, suggesting that it is relatively more stable than other small cations. The smaller clusters (Si3-5C+) fragment primarily by the loss of neutral Si atoms, while larger clusters (Si7-10C+) lose neutral Si2C and Si3C, which are concluded to be more stable neutrals.

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DO - 10.1016/j.cplett.2005.02.046

M3 - Article

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EP - 219

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Photodissociation of silicon carbide cluster cations

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