Effect of magnetic field on laser induced breakdown spectroscopy of zirconium dioxide (ZrO2) plasma

Waheed, Sadia; Bashir, Shazia; Dawood, Asadullah; Anjum, Safia; Akram, Mahreen; Hayat, Asma; Amin, Shajrul; Zaheer, Ali

doi:10.1016/j.ijleo.2017.04.046

Cited by 29 publications

(15 citation statements)

References 36 publications

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“…It has been gaining popularity due to its ease of sample preparation and relatively simple process. Using a zirconium dioxide sample, the effect of magnetic fields on this versatile process was performed [90]. In line with earlier experiments, the magnetic confinement effect and Joule heating were identified as the main mechanisms through which plasma energy was increased (due to more collisions between ions) and the plume expansion was reduced and localized (due to separation of ion and electron beams, causing an attractive, localizing force) and increased electron density.…”

Section: Laser-induced Plasma Magnetic Machining (Lipmm)supporting

confidence: 56%

A review of magnetic-assisted machining processes

Peruri

Chaganti

2019

J Braz. Soc. Mech. Sci. Eng.

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There has been an increasing interest in the penetration of magnetic field-assisted machining processes in the industries. Due to the ease of contactless forces, magnetic fields have proved extremely versatile and relatively low cost when considering the potential increase in productivity of existing machining processes that it can provide. In this overview, we review the recent achievements and developments in magnetic field-assisted machining processes and their applications. A wide variety of machining domains are examined including electro-discharge machining (EDM), micro-EDM, electrochemical machining, magnetic-assisted machining and many more. The advantages and limitations of each implementation and potential future research pathways are also discussed.

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Section: Laser-induced Plasma Magnetic Machining (Lipmm)supporting

confidence: 56%

A review of magnetic-assisted machining processes

Peruri

Chaganti

2019

J Braz. Soc. Mech. Sci. Eng.

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“…The basic mechanisms of NELIBS were reduction of the laser induced plasma excitation threshold of the sample using nanoparticles. Magnetic confinement is still the research hotspot of LIBS technology [17,27], but the magnetic confinement effect is limited by insufficient magnetic field strength of available magnets. Compared with the above methods, spatial confinement is a simple and costeffective method for enhancing signal intensity and improving the detection sensitivity of LIBS.…”

Section: Introductionmentioning

confidence: 99%

Spatial confinement effects of laser-induced breakdown spectroscopy at reduced air pressures

Zeng

Deng

Liu

et al. 2022

Front. Optoelectron.

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Spatial confinement is a simple and cost-effective method for enhancing signal intensity and improving the detection sensitivity of laser-induced breakdown spectroscopy (LIBS). However, the spatial confinement effects of LIBS under different pressures remains a question to be studied, because the pressure of the ambient gas has a significant influence on the temporal and spatial evolution of plasma. In this study, spatial confinement effects of LIBS under a series of reduced air pressures were investigated experimentally, and the plasma characteristics under different air pressures were studied. The results show that the reduced air pressure can lead to both earlier onset and weakening of the enhancement effect of the spatial confinement on the LIBS line intensity. When the air pressure drops to 0.1 kPa, the enhancement effect of the emission intensity no longer comes from the compression of the reflected shock wave on the plasma, but from the cavity’s restriction of the plasma expansion space. In conclusion, the enhancement effect of spatial confinement technology on the LIBS is still effective when the pressure is reduced, which further expands the research and application field of spatial confinement technology. Graphical abstract

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“…Shen et al 5 investigated the effect of the optical emission from laser-induced plasma plumes expanding across an external transverse magnetic field magnetically confined laser-induced breakdown spectroscopy. Waheed et al 6 investigated laser-induced breakdown spectroscopy of ZrO 2 plasma in the presence and absence of magnetic field. They observed the existence of magnetic confinement effects.…”

Section: Introductionmentioning

confidence: 99%

Research on beam bunching and deflection characteristics of low-power laser under the electromagnetic effect

Zhang

Lü

et al. 2019

Measurement and Control

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The bunching and deflection characteristics of low-power laser beam were investigated under electromagnetic field. On the basis of the Faraday effect, the cylindrical electromagnetic cavity was designed and implemented in the experiments. Several types of the magneto-optical elements were placed in the electromagnetic cavity individually. In the test of the deflection characteristics of low-power laser, the rotating angle, the polarization plane of linearly polarized light which passed through electromagnetic cavity, was measured by polarization extinction. We focus on the relation between the coil current and the rotating angle. The experimental data show that when the coil current varies in the range of 0–5 A, the rotating angles changed from 0° to 24.1°. Then, a fitting formula about the coil current and the rotating angle was obtained from the experimental data using the least square algorithm. The analysis shows that the rotating angle is proportional to the excitation current and the correlation coefficient is more than 0.9995. In order to study the beam bunching characteristics of low-power laser, the area of the laser facula was measured after the low-power laser passed through the electromagnetic cavity. The experiment data show that the laser facula area changes in a small range and the experimental data meet 3σ criteria.

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Effect of magnetic field on laser induced breakdown spectroscopy of zirconium dioxide (ZrO2) plasma

Cited by 29 publications

References 36 publications

A review of magnetic-assisted machining processes

A review of magnetic-assisted machining processes

Spatial confinement effects of laser-induced breakdown spectroscopy at reduced air pressures

Research on beam bunching and deflection characteristics of low-power laser under the electromagnetic effect

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