Time of flight mass spectrometry of polyyne formation in the irradiation of liquid alkanes with femtosecond laser pulses

Carbon ◽  
2010 ◽  
Vol 48 (9) ◽  
pp. 2517-2520 ◽  
Author(s):  
A.A. Zaidi ◽  
A. Hu ◽  
M.J. Wesolowski ◽  
X. Fu ◽  
J.H. Sanderson ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Femtosecond Laser ◽  
Time Of Flight ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Flight Mass Spectrometry ◽  
Liquid Alkanes

scholarly journals Analysis of the xylenol isomers by femtosecond laser time of flight mass spectrometry

2018 ◽  
Vol 96 (7) ◽  
pp. 711-715 ◽  
Author(s):  
A. Kepceoğlu ◽  
N. Köklü ◽  
Y. Gündoğdu ◽  
Ö. Dereli ◽  
H.S. Kilic
Keyword(s):  
Mass Spectrometry ◽  
Femtosecond Laser ◽  
Density Functional ◽  
Laser System ◽  
Time Of Flight ◽  
Geometry Optimization ◽  
Femtosecond Laser Pulses ◽  
Basis Set ◽  
Hydroxyl Group ◽  
Flight Mass Spectrometry

Xylenol is a phenolic chemical substance having two methyl groups and one hydroxyl group attached to a benzene ring and has six isomers. 2,4-xylenol is the only isomer of the xylenol molecule that is in the liquid phase while the remaining isomers are all in crystal form at room temperature. In the scope of this study, we have experimentally investigated ionization and dissociation properties of xylenol isomers. All experiments were carried out by using a time of flight mass spectrometry (TOF-MS) system coupled with a femtosecond laser system. The laser pulse power-dependent multiphoton ionization of xylenol isomers was investigated by using IR (800 nm) femtosecond laser pulses having a pulse width of ∼90 fs in duration and laser intensities changing from 2.6 × 1013 to 2.6 × 1014 W/cm2. Theoretically, molecular orbitals (LUMO+1, LUMO, HOMO, HOMO–1), vertical and adiabatic ionization energies were calculated using density functional theory (DFT) with B3LYP functional and 6–311++G(d,p) basis set by following geometry optimization and performing conformational analysis.

Time-of-flight detection of femtosecond laser pulses for precise measurement of large microelectronic step height

2018 ◽  
Vol 43 (7) ◽  
pp. 1447 ◽  
Author(s):  
Xing Lu ◽  
Shuangyou Zhang ◽  
Chan-Gi Jeon ◽  
Chu-Shik Kang ◽  
Jungwon Kim ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Precise Measurement ◽  
Time Of Flight ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Step Height

scholarly journals Association Reaction of Gaseous C2H4 in Femtosecond Laser Filaments Studied by Time-of-Flight Mass Spectrometry

ACS Omega ◽  
2021 ◽  
Author(s):  
Akitaka Matsuda ◽  
Kentaro Tani ◽  
Yukari Takeuchi ◽  
Yui Hayakawa ◽  
Akiyoshi Hishikawa
Keyword(s):  
Mass Spectrometry ◽  
Femtosecond Laser ◽  
Time Of Flight ◽  
Flight Mass Spectrometry ◽  
Association Reaction
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