Article
Instruments & Instrumentation
Saba Mushtaq, Khurram Siraj, Muhammad Shahzad Abdul Rahim, Sami Ulhaq, Qaneeta Younas, Waqas Asad, Nimra Shahzad, Anwar Latif
Summary: In this study, laser-induced kohl plasma was generated near a transverse magnetic field of 0.8 T. The emission spectra analysis revealed that most of the emission line intensities decreased due to the field, with a few lines showing an increase. Plasma parameters such as electron temperature, electron number density, and plasma frequency were found to increase. The analysis of the kohl emission spectrum detected several elements, including lead and chromium, which may have chronic health effects.
APPLIED SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
K. Deng, S. W. Li, Y. L. Zhao, J. C. Shi, S. N. Luo
Summary: The effects of aluminum microparticles on plasma chemistry and structural dynamics of laser-ablated pure and aluminized 5-methyl-1H-tetrazole (C2H4N4) were studied. Results showed that the addition of aluminum microparticles increased the intensities of CN and C-2 emissions and altered their lifetimes. Furthermore, aluminum microparticles facilitated the expansion and splitting of the laser-induced plasma.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Chemistry, Analytical
Wei Ke, Xiaohua Wang, Minyuan Chen, Huan Yuan, Aijun Yang, Jifeng Chu, Dingxin Liu, Mingzhe Rong
Summary: Laser-induced breakdown spectroscopy (LIBS) is a useful technique for quantitative detection based on the properties of laser-induced plasma (LIP) at local thermodynamic equilibrium (LTE). The influence of ambient pressure on the spatial-temporal evolution of LTE for LIP is still not well understood, and the mechanism of this influence remains unclear.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Physics, Multidisciplinary
Wojciech Gromelski, Pawel Gasior
Summary: The time evolution of plasma electron temperature and density is crucial in various physics-related fields. The CF DP-LIBS method can minimize sample impact, optimize laser and spectral parameters, and enable real-time chemical analysis. By calculating electron temperature and density of plasma induced by double-pulse Nd:YAG laser with different inter-pulse delays, researchers can provide complementary calculations using methods like Stark broadening, Boltzmann plot, and Saha equation. The study focuses on tungsten samples, as tungsten is the preferred material for plasma-facing components in future fusion devices like ITER, where LIBS method will be used to monitor tritium retention.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Engineering, Geological
Yanjun Li, Baiquan Lin, Xiangliang Zhang, Minghua Lin
Summary: The plasma-induced crushing technology is an efficient method for cracking coal seams. This study established an experiment platform to study the law of fracture development in coal during plasma-induced breakage. The results showed that plasma-induced breakage leads to the formation of a crushing circle around the electrode and multiple penetrated fractures on the coal surface. Numerical simulation and analysis revealed that the electrical explosion effect of the plasma channel causes the generation of a shock wave that propagates and attenuates continuously in the coal body, resulting in a crushing area and a fracture area.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Optics
Ali Khumaeni, Katsuaki Akaoka, Masabumi Miyabe, Ikuo Wakaida
Summary: The study investigated the excitation process of magnesium atoms in microwave-assisted laser plasma. It was found that the emission intensity of ionic magnesium lines is high in helium and argon gases, with a significant enhancement in plasma emission when a microwave is introduced. The excitation mechanism was suggested to proceed through metastable atoms overwhelmingly produced in the microwave-assisted laser-induced plasma.
OPTICS COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
M. A. Mochalov, R. I. Il'kaev, V. E. Fortov, S. V. Erunov, V. A. Arinin, A. O. Blikov, V. A. Ogorodnikov, A. V. Ryzhkov, V. A. Komrakov, A. E. Kovalev, M. G. Novikov, I. P. Maksimkin, S. A. Finyushin, E. A. Chudakov, M. I. Likhutov, V. K. Gryaznov, I. L. Iosilevskii, P. R. Levashov, D. V. Minakov, M. A. Paramonov
Summary: The quasi-isentropic compressibility of a strongly nonideal helium plasma in the pressure range 250-600 GPa was experimentally studied. The temperature and flight speed of the plasma were measured, and data on its compression to a certain density were obtained. The trajectories of the metallic shells compressing the plasma were detected, and the density and pressure of the compressed plasma were determined. The experimental data did not show any anomaly in the pressure range of the theoretical plasma phase transition in helium.
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
(2023)
Article
Chemistry, Physical
Milan Trtica, Miroslav Kuzmanovic, Jelena Savovic, Dragan Rankovic
Summary: The study focused on the interaction between a TEA CO2 laser and a PMMA sample to demonstrate the feasibility of using LIBS to detect hydrogen. Plasma generation over the PMMA surface required a metal sub-target, and the recorded spectra showed atomic lines of carbon and oxygen, as well as emission from C-2 and CN molecules. The evaluation of electron number density and temperature helped characterize the laser-induced plasma, and micro-damages created by laser ablation could have potential applications in sensor technologies.
APPLIED SURFACE SCIENCE
(2022)
Article
Nuclear Science & Technology
Yi-Ming Lyu, Yu-Ping Xu, Xiao-Chun Li, Xin Shen, Bo-Yu Wu, Chi-Shung Yip, Xiang Gao, Xiao-Dong Lin, Zhong-Shi Yang, Xing-Zhong Cao, Hai-Shan Zhou, Guang-Nan Luo
Summary: Analysis using Doppler broadening spectroscopy reveals that both low-energy helium and deuterium plasmas can induce defect formation in tungsten samples, but the effects vary depending on the incident fluence of helium and deuterium.
NUCLEAR MATERIALS AND ENERGY
(2021)
Article
Physics, Fluids & Plasmas
Lu Wang, Hai-Shan Zhou, Hao-Dong Liu, Qiang Qi, Han-Jun Tu, Li-Qun Shi, Guang-Nan Luo
Summary: The effect of helium-induced surface microstructure on deuterium plasma-driven permeation through a reduced activation ferritic/martensitic steel CLF-1 was studied. It was found that the steady-state deuterium permeation flux decreases with the increase in helium ion fluence. The diffusion coefficient of deuterium is not significantly affected by helium pre-damage, while the reflection coefficient increases with the enhancement of helium ion fluence. The surface microstructure modification and helium bubble layer formation both contribute to the reduction of deuterium permeation.
Article
Multidisciplinary Sciences
Konstantinos Kaleris, Bjoern Stelzner, Panagiotis Hatziantoniou, Dimosthenis Trimis, John Mourjopoulos
Summary: This work introduces a novel laser-based optoacoustic transducer that can reproduce arbitrary complex sound in the air or on solid targets without the need for a receiver or demodulation device. The performance of the prototype is evaluated through experimental measurements and a computational model, with good agreement found between model evaluations and acoustic measurements. Additionally, a generic computational model is presented for simulating different types of audio streams.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Yuji Ikeda, Joey kim Soriano, Hironori Ohba, Ikuo Wakaida
Summary: Using microlasers and microwaves, this study investigated the impact of microwaves on the expansion of air plasma. The results showed that microwave enhancement led to a 400-fold increase in plasma volume, along with an increase in temperature and a decrease in electron density, indicating the presence of nonequilibrium plasmas. Additionally, microwaves were found to sustain plasma characteristics over time.
Article
Chemistry, Analytical
Megha Mohan, Jakub Buday, David Prochazka, Pavel Gejdos, Pavel Porizka, Jozef Kaiser
Summary: In recent years, Laser-Induced Breakdown Spectroscopy (LIBS) has been recognized as a powerful technique for elemental imaging of samples. However, analyzing heterogeneous samples with multiple matrices poses new challenges. In this study, the behavior of plasma plumes at the boundary of two well-defined matrices was investigated using a combination of three-dimensional plasma imaging, spectroscopy, and Mach-Zehnder interferometry. The findings provide valuable insights into the factors that need to be considered when mapping fine heterogeneous structures using LIBS.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Chemistry, Analytical
Megha Mohan, Jakub Buday, David Prochazka, Pavel Gejdos, Pavel Porizka, Jozef Kaiser
Summary: Laser-Induced Breakdown Spectroscopy (LIBS) has become an important technique for elemental imaging of samples, but analyzing heterogeneous samples with multiple matrices presents new challenges. This study investigated the behavior of plasma plumes generated on the boundary of two well-defined matrices using three-dimensional imaging, spectroscopy, and interferometry. The effects of collection optic angles and slight misalignment of the optics on the elemental distribution and signal intensities were analyzed. The findings provide valuable insights into the behavior of plasma plumes at the boundary of matrices and factors to consider when mapping fine heterogeneous structures using LIBS.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Physics, Applied
Matthew C. Paliwoda, Joshua L. Rovey
Summary: Plasma photonic crystals (PPCs) are photonic crystals formed from plasma that allow for electrically tunable structure and permittivity. This work demonstrates for the first time that individual control of plasma columns can tune a PPC bandgap frequency by an order of magnitude, expanding the frequency variability and potential applications of PPCs as wideband tunable bandgap devices.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Applied
Zener Sukra Lie, Marincan Pardede, May On Tjia, Koo Hendrik Kurniawan, Kiichiro Kagawa
JOURNAL OF APPLIED PHYSICS
(2015)
Article
Physics, Applied
Nasrullah Idris, Kurnia Lahna, Syahrun Nur Abdulmadjid, Muliadi Ramli, Hery Suyanto, Alion Mangasi Marpaung, Marincan Pardede, Eric Jobiliong, Rinda Hedwig, Maria Margaretha Suliyanti, Zener Sukra Lie, Tjung Jie Lie, Kiichiro Kagawa, May On Tjia, Koo Hendrik Kurniawan
JOURNAL OF APPLIED PHYSICS
(2015)
Article
Physics, Applied
Alion Mangasi Marpaung, Muliadi Ramli, Rinaldi Idroes, Hery Suyanto, Kurnia Lahna, Syahrun Nur Abdulmadjid, Nasrullah Idris, Marincan Pardede, Rinda Hedwig, Zener Sukra Lie, Davy Putra Kurniawan, Koo Hendrik Kurniawan, Tjung Jie Lie, May On Tjia, Kiichiro Kagawa
JAPANESE JOURNAL OF APPLIED PHYSICS
(2016)
Article
Physics, Applied
Syahrun Nur Abdulmadjid, Marincan Pardede, Hery Suyanto, Muliadi Ramli, Kurnia Lahna, Alion Mangasi Marpaung, Rinda Hedwig, Zener Sukra Lie, Davy Putra Kurniawan, Koo Hendrik Kurniawan, Tjung Jie Lie, Nasrullah Idris, May On Tjia, Kiichiro Kagawa
JOURNAL OF APPLIED PHYSICS
(2016)
Article
Physics, Fluids & Plasmas
Ali Khumaeni, Wahyu Setia Budi, Asep Yoyo Wardaya, Rinda Hedwig, Koo Hendrik Kurniawan
PLASMA SCIENCE & TECHNOLOGY
(2016)
Letter
Spectroscopy
Syahrun Nur Abdulmadjid, May On Tjia, Koo Hendrik Kurniawan, Kiichiro Kagawa
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2016)
Article
Nanoscience & Nanotechnology
Hery Suyanto, Marincan Pardede, Rinda Hedwig, Alion Mangasi Marpaung, Muliadi Ramli, Tjung Jie Lie, Syahrun Nur Abdulmadjid, Koo Hendrik Kurniawan, May On Tjia, Kiichiro Kagawa
Article
Optics
Rinda Hedwig, Ivan Tanra, Indra Karnadi, Marincan Pardede, Alion Mangasi Marpaung, Zener Sukra Lie, Koo Hendrik Kurniawan, Maria Margaretha Suliyanti, Tjung Jie Lie, Kiichiro Kagawa
Article
Physics, Applied
Eric Jobiliong, Marincan Pardede, Rinda Hedwig, Indra Karnadi, Ivan Tanra, Zener Sukra Lie, Koo Hendrik Kurniawan, Tjung Jie Lie, Ali Khumaeni, Alion Mangasi Marpaung, Syahrun Nur Abdulmadjid, Nasrullah Idris, Kurnia Lahna, Muliadi Ramli, Kiichiro Kagawa, May On Tjia
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Ivan Tanra, Indra Karnadi, Marincan Pardede, Rinda Hedwig, Mangasi Alion Marpaung, Koo Hendrik Kurniawan, Kiichiro Kagawa
JOURNAL OF LASER APPLICATIONS
(2020)
Article
Chemistry, Analytical
Zener Sukra Lie, Marincan Pardede, Eric Jobiliong, Hery Suyanto, Davy Putra Kurniawan, Rinda Hedwig, Muliadi Ramli, Ali Khumaeni, Tjung Jie Lie, Koo Hendrik Kurniawan, Kiichiro Kagawa, May On Tjia
ANALYTICAL CHEMISTRY
(2017)
Article
Optics
Rinda Hedwig, Kurnia Lahna, Zener Sukra Lie, Marincan Pardede, Koo Hendrik Kurniawan, May On Tjia, Kiichiro Kagawa
Article
Optics
Kurnia Lahna, Rinaldi Idroes, Nasrullah Idris, Syahrun Nur Abdulmadjid, Koo Hendrik Kurniawan, May On Tjia, Marincan Pardede, Kiichiro Kagawa
Article
Optics
Koo Hendrik Kurniawan, Marincan Pardede, Rinda Hedwig, Syahrun Nur Abdulmadjid, Kurnia Lahna, Nasrullah Idris, Eric Jobiliong, Hery Suyanto, Maria Margaretha Suliyanti, May On Tjia, Tjung Jie Lie, Zener Sukra Lie, Davy Putra Kurniawan, Kiichiro Kagawa
Proceedings Paper
Engineering, Multidisciplinary
Ali Khumaeni, Zener Sukra Lie, Wahyu Setiabudi, Koo Hendrik Kurniawan, Kiichiro Kagawa
3RD INTERNATIONAL CONFERENCE ON SCIENCE & ENGINEERING IN MATHEMATICS, CHEMISTRY AND PHYSICS 2015 (SCITECH 2015)
(2015)