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7. Scientific and Technical Contributions from Research Projects

Author

Capineri, Lorenzo, Pochanin, Gennadiy, Bechtel, Timothy, Capan, Ivana, Brodar, Tomislav, Pastuović, Željko, Coutinho, Jose, Radulović, Vladimir, Snoj, Luka, Ohshima, Takeshi, Palucci, Antonio, Colao, Francesco, Milovan, Stoiljkovic, Kolobrodov, Valentin, Boonaker, Bart, Schnürer, Frank, Stifini, Cristiano, Carnevale, Luigi, Cassioli, Lieutenant Colonel Luigi, De Muro, Stefano, Antuofermo, Pasquale, Attolini, G., Beretta, S., Bosi, M., Ferrari, C., Frigeri, C., Frigeri, P., Gombia, E., Lazzarini, L., Rossi, F., Seravalli, L., Trevisi, G., Hasanov, Rovshan, Sultanov, Chingiz, Gahramanova, Gulnaz, Musayeva, Nahida, Orujov, Teymur, Sansone, Francesco, Baldini, Laura, Rispoli, Francesco, Momtaz, Zahra Sadre, Pingue, Pasqualantonio, Roddaro, Stefano, Unlu, Mehmet Burcin, Pavlov, Ihor, Serozhkin, Yuriy, Gleich, Dušan, Kafedziski, Venceslav, Skejić, Emir, Steker, Ivan, Babic, Zdenka, Turnbull, Graham, Mustra, Mario, Rameev, Bulat, Mozzhukhin, Georgy, Tarapov, Sergey, Ünal, İlhami, Tábi, Levente, Torroba, Tomás, Schechter, Israel, García-Calvo, José, Revilla-Cuesta, Andrea, Lazoul, Mohamed, Maamar, Noureddine, Amel, Bellada, Laurell, Fredrik, Coutaz, Jean-Louis, Piletsky, Sergey, Chegel, Volodymyr, Lopatynskyi, Andrii, Lytvyn, Vitalii, Pastor, Juan Martinez, Abargues, Rafael, Rodríguez, Pedro, Lukin, K., Tatyanko, D., Palamarchuck, V., Vyplavin, P., Lukin, S., Zemlyanіy, O., Shiyan, Yu., Mishchenko, O., Yurchenko, L., Sushchenko, P., Sato, Motoyuki, Charrue, Pierre, Capineri, Lorenzo, editor, and Turmuş, Eyüp Kuntay, editor

Published
2019
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8. NATO Advanced Research Workshop on Explosives Detection

Author

Capineri, Lorenzo, Pochanin, Gennadiy, Bechtel, Timothy, Lande, Tor-Sverre, Capan, Ivana, Pastuovic, Zeljko, Ohshima, Takeshi, Coutinho, Jose, Snoj, Luka, Palucci, Antonio, Milovan, Stoiljkovic, Kolobrodov, Valentin, Boonaker, Bart, Schnürer, Frank, Stifini, Cristiano, Carnevale, Luigi, Ferrari, Claudio, Musayeva, Nahida, Sansone, Francesco, Unlu, Mehmet Burcin, Pavlov, Ihor, Serozhkin, Yuriy, Gleich, Dušan, Kafedziski, Venceslav, Skejic, Emir, Pavkovic, Nikola, Babic, Zdenka, Turnbull, Graham, Muštra, Mario, Rameev, Bulat, Tarapov, Sergey, Ünal, İlhami, Çolak, Bektas, Tábi, Levente, Salameh Alghyaline, Ra’ed, Lane, Raymond, Torroba, Tomás, Schechter, Israel, Coutaz, Jean Louis, Lazoul, Mohamed, Laurell, Fredrik, Piletsky, Sergey, Chegel, Volodymyr, Martinez–Pastor, Juan, Christophe, Florent, Lukin, Kostantin, Nam, Sangwook, Voitenko, Iurii, Bunin, Serhiy, Schoolderman, Arnold, Neffe, Sławomir, Kukhar, Valery, Mulic, Mirsad, Joksimovic, Milovan, Sato, Motoyuki, Deiana, Daniela, Capineri, Lorenzo, editor, and Turmuş, Eyüp Kuntay, editor

Published
2019
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50. Converting Spatial to Pseudotemporal Resolution in Laser Plasma Analysis by Simultaneous Multifiber Spectroscopy

Author

Bulatov, Valery, Krasniker, Rivie, and Schechter, Israel

Subjects
Laser plasmas -- Measurement, Plasma spectroscopy -- Research, Chemistry
Abstract

Traditional chemical analysis based on laser plasma spectroscopy (LPS) requires time-gated detectors, to avoid the initial signal from the hot plasma. These detectors are expensive and often need to be cooled and protected against vapor condensation. We suggest a low-cost setup that may replace these gated detectors, while maintaining acceptable analytical performance. The proposed setup is a result of investigation of plasma-front propagation in LPS analysis. It is known that the LPS plasma propagation is similar to the shock wave propagation after a strong explosion in the atmosphere. We found that the propagation of the plasma fits well the Sedov blast wave theory, providing a good agreement between the theoretical and experimental figures. A proper observation geometry, which is perpendicular to the plasma expansion vector, enables converting spatial to temporal resolution. We take advantage of the fact that the plasma reaches a given distance above the analyzed surface at a certain time delay. Therefore, a single optical fiber, positioned at a well-defined geometry, can provide spectral information corresponding to a certain time delay. A multifiber imaging spectrometer provides information corresponding to a series of delay times, which is adequate for analysis of a variety of matrixes. It was found that the performance of the nongated detector observing a narrow solid angle is similar to that of a gated one observing the whole plasma. For one particular example, observing the plasma from a distance of 4.5 mm is equivalent to a delay of 4 (mu)s and integration time of 2 (mu)s. The ratio of spectral lines of two elements was investigated using the spatially resolved (nongated) setup, and it was found that this mode is advantageous when internal calibration is applied. It was concluded that sensitive LPS analyses can be carried out by less expensive (nongated) detectors.

Published
2000

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