Angle- and time-resolved mass spectrometric study on pulsed laser ablation of an La-Ca-Mn-O target

1998 ◽  
Vol 41 (12) ◽  
pp. 1309-1314 ◽  
Author(s):  
Haijun Dang ◽  
Zhenhui Han ◽  
Qizong Qin
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Mass Spectrometric Study ◽  
Mass Spectrometric ◽  
Spectrometric Study ◽  
Time Resolved

scholarly journals Time-Resolved Quadrupole Mass Spectrometric Studies on Pulsed Laser Ablation of TiO2

1999 ◽  
Vol 18 (3) ◽  
pp. 99-109 ◽  
Author(s):  
Yongxin Tang ◽  
Zhenhui Han ◽  
Qizong Qin
Keyword(s):  
Laser Ablation ◽  
Continuous Wave ◽  
Center Of Mass ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Ionic Species ◽  
Mass Spectrometric ◽  
Quadrupole Mass ◽  
Time Resolved ◽  
Ambient Oxygen

Pulsed laser ablation of TiO2 at 355 nm and 532 nm has been investigated using an angleand time-resolved quadrupole mass spectrometric technique. The major ablated species include O (m/e = 16), O2 (m/e = 32), Ti (m/e = 48), TiO (m/e = 64) and TiO2 (m/e = 80). The time-of-flight (TOF) spectra of ablated species are measured for the ionic and neutral ablated species, and they can be fitted by a Maxwell – Boltzmann (M – B) distribution with a center-of-mass velocity. The measured angular distributions of the ionic species (O+ and Ti+) and the neutral species (O and Ti) can be fitted with cos⁡nθ and a cos⁡θ + (1−a)cos⁡nθ, respectively. In addition, a continuous wave oxygen molecular beam is introduced into the ablated plume, and the enhancement of the signal intensities of TiO is observed. It implies that the ablated Ti atoms/ions species can react with ambient oxygen molecules in the gas phase. In the meanwhile, the physicochemical mechanism of pulsed laser ablation of TiO2 is discussed.

Multiphoton Ionization-Mass Spectrometric Study on Laser Ablation of Polymethylmethacrylate and Polystyrene at 308 nm

1995 ◽  
Vol 34 (Part 1, No. 1) ◽  
pp. 218-225 ◽  
Author(s):  
Makoto Tsunekawa ◽  
Satoru Nishio ◽  
Hiroyasu Sato
Keyword(s):  
Laser Ablation ◽  
Multiphoton Ionization ◽  
Mass Spectrometric Study ◽  
Mass Spectrometric ◽  
Ionization Mass ◽  
Spectrometric Study

Spectrum analysis of plasma produced by pulsed laser ablation of GaAs

2007 ◽  
Vol 73 (2) ◽  
pp. 231-239 ◽  
Author(s):  
AI HUA LIU
Keyword(s):  
Laser Ablation ◽  
Ambient Pressure ◽  
Pulsed Laser ◽  
Emission Spectra ◽  
Diagnostic Technique ◽  
Pulsed Laser Ablation ◽  
Stark Broadening ◽  
Experimental Conditions ◽  
Time Resolved ◽  
Excited Atoms

Abstract.A time-resolved diagnostic technique was used to investigate the emission spectra from the plasmas produced by 1.06 μm, 10 ns pulsed laser ablation of semiconductor GaAs. The characteristics of the species in plasma produced at different ambient pressure were analyzed. The full width at half maximum of the spectral line was measured and analyzed according to obtained spectra of the excited atoms; several line broadening factors were estimated according to our experimental conditions and the results indicate that the Stark broadening is the main broadening mechanism. Under the assumption of local thermodynamic equilibrium, the time evolution of electron number density was deduced from the Stark broadening measurements.

Laser ablation Fourier transform mass spectrometric study of zeolites

1995 ◽  
Vol 4 (6) ◽  
pp. 467-473 ◽  
Author(s):  
Sejin Jeong ◽  
Keith J. Fisher ◽  
Russell F. Howe ◽  
Gary D. Willett
Keyword(s):  
Fourier Transform ◽  
Laser Ablation ◽  
Mass Spectrometric Study ◽  
Mass Spectrometric ◽  
Spectrometric Study
Sign in / Sign up

Export Citation Format

Share Document