scholarly journals The size prediction of potential inclusions embedded in the sub-surface of fused silica by damage morphology

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 233-239 ◽  
Author(s):  
Xiang Gao ◽  
Rong Qiu ◽  
Kunpeng Wang ◽  
Jiangmei Zhang ◽  
Guorui Zhou ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Depth Profile ◽  
Size Range ◽  
Mie Theory ◽  
Fused Silica ◽  
Icp Oes ◽  
Pulse Profile ◽  
Damage Morphology ◽  
Temporal Pulse

AbstractA model for predicting the size ranges of different potential inclusions initiating damage on the surface of fused silica has been presented. This accounts for the heating of nanometric inclusions whose absorptivity is described based on Mie Theory. The depth profile of impurities has been measured by ICP-OES. By the measured temporal pulse profile on the surface of fused silica, the temperature and thermal stress has been calculated. Furthermore, considering the limit conditions of temperature and thermal stress strength for different damage morphologies, the size range of potential inclusions for fused silica is discussed.

Laser damage morphology in fused silica induced by simultaneous multi-wavelength irradiation with multiple longitudinal modes

2018 ◽  
Vol 15 (10) ◽  
pp. 106001
Author(s):  
Xiang Gao ◽  
Rong Qiu ◽  
Ke Yao ◽  
Yun Luo ◽  
Guorui Zhou ◽  
...  
Keyword(s):  
Fused Silica ◽  
Laser Damage ◽  
Longitudinal Modes ◽  
Damage Morphology ◽  
Multi Wavelength

Study on thermal stress of the the fused silica irradiated by millisecond–nanosecond combined pulse laser

Pramana ◽  
2021 ◽  
Vol 95 (4) ◽  
Author(s):  
Shengqiang Xia ◽  
Jixing Cai ◽  
Xiaoyun Zhang ◽  
Jingyi Li ◽  
Guangyong Jin ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Pulse Laser ◽  
Fused Silica

Influence of vacuum on nanosecond laser-induced surface damage morphology in fused silica at 1064 nm

2016 ◽  
Vol 362 ◽  
pp. 290-296 ◽  
Author(s):  
R. Diaz ◽  
M. Chambonneau ◽  
P. Grua ◽  
J.-L. Rullier ◽  
J.-Y. Natoli ◽  
...  
Keyword(s):  
Surface Damage ◽  
Fused Silica ◽  
Nanosecond Laser ◽  
Damage Morphology

Effect of the repaired damage morphology of fused silica on the modulation of incident laser

2017 ◽  
Vol 64 ◽  
pp. 295-301 ◽  
Author(s):  
X. Gao ◽  
Y. Jiang ◽  
R. Qiu ◽  
Q. Zhou ◽  
R. Zuo ◽  
...  
Keyword(s):  
Fused Silica ◽  
Incident Laser ◽  
Damage Morphology

Reconstructed expression for aerosol extinction coefficient by considering mass extinction efficiency and hygroscopic growth for polydipersed aerosol

2020 ◽  
Author(s):  
Chang Hoon Jung ◽  
JiYi Lee ◽  
Junshik Um ◽  
Yong Pyo Kim
Keyword(s):  
Particle Size ◽  
Optical Properties ◽  
Growth Factor ◽  
Size Distribution ◽  
Enhancement Factor ◽  
Size Range ◽  
Geometric Mean ◽  
Mie Theory ◽  
Hygroscopic Growth ◽  
Particle Size Range

<p>In this study, simplified analytic type of expression for size dependent MEs (Mass efficiencies) are developed. The entire size was considered assuming lognormal size distribution for sulfate, nitrate and NaCl aerosol species and the MEE of each aerosol chemical composition was estimated by fitting Mie’s calculation. The obtained results are compared with the results from the Mie-theory-based calculations and showed comparable results.</p><p>The mass efficiencies of all aerosol components for each size range are compared with Mie’s results and approximated as a function of geometric mean diameter in the form of a power law formula. Finally, harmonic mean type approximation was used to cover entire particle size range.</p><p>Also, analytic expression of approximated scattering enhancement factor which stands for the effect of hygroscopic growth factor for polydispersed aerosol on aerosol optical properties are obtained.</p><p>Based on aerosol thermodynamic models, mass growth factor can be obtained and their optical properties can be obtained by using Mie theory with different aerosol properties and size distribution. Finally, scattering enhancement factor was approximated fRH for polydispersed aerosol as a function of RH.</p><p>Finally, we also compared the simple forcing efficiency (SFE, W/g) of polydisperse aerosols between the developed simple approach and by the method using the Mie theory. The results show that current obtained approximated methods are comparable with existing numercal calculation based results for polydipersed particle size.</p>

Studies of laser damage morphology reveal subsurface feature in fused silica

2010 ◽  
Vol 42 (9) ◽  
pp. 1465-1468 ◽  
Author(s):  
Guohang Hu ◽  
Yuanan Zhao ◽  
Dawei Li ◽  
Qiling Xiao ◽  
Jianda Shao ◽  
...  
Keyword(s):  
Fused Silica ◽  
Laser Damage ◽  
Damage Morphology

Thermal Stresses due to a Laser Pulse: Elastic Solution

1996 ◽  
Vol 63 (1) ◽  
pp. 38-46 ◽  
Author(s):  
L. G. Hector ◽  
R. B. Hetnarski
Keyword(s):  
Thermal Stresses ◽  
Functional Form ◽  
Single Pulse ◽  
Elastic Half Space ◽  
Laser Resonator ◽  
Continuous Beam ◽  
Mode Structure ◽  
Pulse Profile ◽  
Thermal Stress Field ◽  
Temporal Pulse

The thermal stress field in an elastic half-space due to a single pulse from a laser is derived for the general case of a mixed-mode structure beam. The mode structure models the output from a cylindrical laser resonator and thus defines a radially symmetric intensity distribution about the beam axis. The functional form of the temporal pulse profile is quite general in that it models the temporal pulse shapes emitted by a laser that is either internally pulsed through radio frequency modulation of its power supply, Q-switched, or mode locked. It also models a continuous beam that is mechanically chopped through external means.

Investigation of multi-layered silicate ceramics using laser ablation optical emission spectrometry, laser ablation inductively coupled plasma mass spectrometry, and electron microprobe analysis

2011 ◽  
Vol 65 (6) ◽  
Author(s):  
Linda Zaoralkova ◽  
Ales Hrdlicka ◽  
Vitezslav Otruba ◽  
Petr Sulovsky ◽  
Nicole Gilon ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Depth Profile ◽  
Inductively Coupled Plasma ◽  
Layered Silicate ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Individual Layer ◽  
Inductively Coupled ◽  
Transverse Line

AbstractThe applicability of laser ablation (LA) inductively coupled plasma (ICP) spectrometry for assessing elemental distributions in layered ceramics was investigated and compared with electron probe microanalysis (EPMA). Ordinary glazed wall tiles were employed as model specimens due to their defined structure and composition. They were used for calibration in the analysis of ancient pottery. A qualitative depth profile was acquired by single-spot laser drilling perpendicular to coatings with a Nd:YAG (1064 nm) laser coupled with an ICP optical emission spectrometer (OES). The lower lateral resolution associated with the laser spot diameter of 1.0 mm led to smoothing of the depth profile due to the averaging of local irregularities. In addition, transverse line scans by ablation across the tile section using an ArF* (193 nm) laser coupled with an ICP mass spectrometer (MS) were performed. LA-ICP-OES depth profiles and LA-ICP-MS transverse scans were validated by EPMA section scans and 2D back-scattered electrons images. The LA-ICP-OES acquisition was less dependent on sample surface and layer irregularities, whereas the transverse line scan over the tile section with the small-spot beam offered insight into the micromorphology of the individual layer. The combined approach revealed the occurrence of individual mineral grains, micro-heterogeneities and the character of interfaces between layers.

Ultrasonic-Assisted Dialysis Coupled with CE-ICP-OES for Determination of Calcium Species in the Dialysate of Human Blood

2011 ◽  
Vol 343-344 ◽  
pp. 769-773
Author(s):  
Bi Yang Deng ◽  
Xiang Shu Xu ◽  
Ying Zi Wang ◽  
Ping Chuan Zhu
Keyword(s):  
Human Blood ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Fused Silica ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Buffer Solution ◽  
Inductively Coupled ◽  
Ultrasonic Assisted ◽  
Fused Silica Capillary

The analytical method for calcium species in human blood was studied using ultrasonic-assisted dialysis coupled with capillary electrophoreisi (CE) inductively coupled plasma optical emission spectrometry (ICP-OES). The optimal ultrasonic dialysis conditions were 72 W power, 60 min extraction time and 70 μL volume of blood sample. Ultrasonic-assisted dialysis improves significantly the dialysis efficiecy by comparing with balance dialysis. The optimized conditions of separation and detection (a 120 cm length×100 μm i.d. fused-silica capillary, 20 kV separation voltage, 30 mmol/L Tris-HCl with pH7.4 buffer solution) for calcium species were achieved by CE-ICP-OES. The forms of calcium in the dialysate of human blood have five different species. The concentration of free Ca2+ in the dialysate was 0.7 mg/L. The hyphenated technique is simple and convenience, which is fit for the separation and analysis of metal-containing biological samples.

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