M. Pardede, T.J. Lie, J. Iqbal, M. Bilal, R. Hedwig, M. Ramli, A. Khumaeni, W.S. Budi, N. Idris, S.N. Abdulmadjid, A.M. Marpaung, I. Karnadi, I. Tanra, Z.S. Lie, H. Suyanto, D.P. Kurniawan, K.H. Kurniawan, K. Kagawa, M.O. Tjia
A laser-induced-breakdown-spectroscopy (LIBS) experiment with a unique double-pulse setup and operated in low-pressure (3 kPa) He ambient gas is performed to study the detection of light elements, such as hydrogen (H) and deuterium (D), as well as elements of high excitation energies, such as fluorine (F) and chlorine (Cl), which are usually difficult to detect using ordinary LIBS techniques. A nanosecond Nd:YAG laser operated in its fundamental wavelength with energy of 54 mJ is focused onto the Al target to generate the He plasma. Another picosecond Nd:YAG laser operated in its fundamental wavelength with energy of 2 mJ is focused onto the sample surface and activated 2 μs before the operation of the nanosecond laser. The application to polyvinyl chloride (PVC) and polytetrafluoroethylene (PTFE) samples produces sharp and high-intensity Cl- and F-emission lines. Meanwhile, the sharp and well-resolved H-D-emission lines with merely 0.18 nm wavelength separation are also clearly detected from a zircaloy sample. Further measurement of a set of zircaloy samples containing different concentrations of D yields a linear calibration curve with a zero intercept. The detection limit of D is found to be about 10 ppm. © 2018 American Chemical Society.
University of Pelita Harapan, 1100 M.H. Thamrin Boulevard, Lippo Village, Tangerang, 15811, Indonesia; Research Center of Maju Makmur Mandiri Foundation, 40/80 Srengseng Raya, Jakarta, 11630, Indonesia; Department of Physics, University of Azad, Jammu and Kashmir, Muzaffarabad, Pakistan; Department of Physics, University of Agriculture, Faisalabad, 38040, Pakistan; Department of Computer Engineering, Faculty of Engineering, Bina Nusantara University, 9 K.H. Syahdan, Jakarta, 11480, Indonesia; Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Darussalam, Banda Aceh, 23111, Indonesia; Faculty of Mathematics and Natural Sciences, Diponegoro University, Tembalang, Semarang, 50275, Indonesia; Faculty of Mathematics and Natural Sciences, Jakarta State University, 10 Rawamangun, Jakarta, 13220, Indonesia; Krida Wacana Christian University, Jakarta, 11470, Indonesia; Faculty of Mathematics and Natural Sciences, Udayana University, Kampus Bukit Jimbaran, Denpasar, Bali, 80361, Indonesia; Fukui Science Education Academy, Takagi Chuou 2 Choume, Fukui, 910-0804, Japan; Physics of Magnetism and Photonics Group, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, 10 Ganesha, Bandung, 40132, Indonesia
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