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1,109 results on '"Tiwari G"'

1. Effect of Adding Expanded Polypropylene and Polyurethane Foams on Crashworthiness Response of the Aluminium-Reinforced Honeycomb Structure

Author

Saptal, Vaibhav, Tiwari, G., Thomas, T., Ghosh, Arindam, Series Editor, Chua, Daniel, Series Editor, de Souza, Flavio Leandro, Series Editor, Aktas, Oral Cenk, Series Editor, Han, Yafang, Series Editor, Gong, Jianghong, Series Editor, Jawaid, Mohammad, Series Editor, Velmurugan, R., editor, Balaganesan, G., editor, Kakur, Naresh, editor, and Kanny, Krishnan, editor

Published
2024
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2. Laser-driven neutron source from high temperature D-D fusion reactions

Author

Jiao, Xuejing, Curry, C., Gauthier, M., Fiuza, F., Kim, J., McCary, E., Labun, L., Labun, O. Z., Schoenwaelder, C., Roycroft, R., Tiwari, G., Glenn, G., Treffert, F., Ditmire, T., Glenzer, S., and Hegelich, B. M.

Subjects
Physics - Plasma Physics
Abstract

We report a laser-driven neutron source with high yield ($>10^8$/J) and high peak flux ($>10^{25}$/cm$^2$/s) derived from high-temperature deuteron-deuteron fusion reactions. The neutron yield and the fusion temperature ($\sim 200$ keV) in our experiment are respectively two orders of magnitude and one order of magnitude higher than any previous laser-induced D-D fusion reaction. The high-temperature plasma is generated from thin ($\sim 2\,\mu$m), solid-density deuterium targets, produced by a cryogenic jet, irradiated by a 140 fs, 130 J petawatt laser with an F/3 off-axis parabola and a plasma mirror achieving fast volumetric heating of the target. The fusion temperature and neutron fluxes achieved here suggest future laser experiments can take advantage of neutrons to diagnose the plasma conditions and come closer to laboratory study of astrophysically-relevant nuclear physics., Comment: 15 pages, 5 figures

Published
2020

3. Identification of Passive Solar Design Determinants in an Ancient Vernacular Structure Located in the Composite Climate of New Delhi and Its Performance Assessment Based on Energy Matrices and Enviro-Economics

Author

Ali, Heena Fatima, Tiwari, G. N., Förstner, Ulrich, Series Editor, Rulkens, Wim H., Series Editor, Wang, Liangzhu Leon, editor, Ge, Hua, editor, Zhai, Zhiqiang John, editor, Qi, Dahai, editor, Ouf, Mohamed, editor, Sun, Chanjuan, editor, and Wang, Dengjia, editor

Published
2023
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4. Laser-driven x-ray and proton micro-source and application to simultaneous single-shot bi-modal radiographic imaging.

Author

Ostermayr, TM, Kreuzer, C, Englbrecht, FS, Gebhard, J, Hartmann, J, Huebl, A, Haffa, D, Hilz, P, Parodi, K, Wenz, J, Donovan, ME, Dyer, G, Gaul, E, Gordon, J, Martinez, M, Mccary, E, Spinks, M, Tiwari, G, Hegelich, BM, and Schreiber, J

Subjects
Animals, Gryllidae, Protons, Radiography, Lasers, X-Rays, Multimodal Imaging
Abstract

Radiographic imaging with x-rays and protons is an omnipresent tool in basic research and applications in industry, material science and medical diagnostics. The information contained in both modalities can often be valuable in principle, but difficult to access simultaneously. Laser-driven solid-density plasma-sources deliver both kinds of radiation, but mostly single modalities have been explored for applications. Their potential for bi-modal radiographic imaging has never been fully realized, due to problems in generating appropriate sources and separating image modalities. Here, we report on the generation of proton and x-ray micro-sources in laser-plasma interactions of the focused Texas Petawatt laser with solid-density, micrometer-sized tungsten needles. We apply them for bi-modal radiographic imaging of biological and technological objects in a single laser shot. Thereby, advantages of laser-driven sources could be enriched beyond their small footprint by embracing their additional unique properties, including the spectral bandwidth, small source size and multi-mode emission.

Published
2020

7. En-route to the fission-fusion reaction mechanism: a status update on laser-driven heavy ion acceleration

Author

Lindner, F. H., McCary, E., Jiao, X., Ostermayr, T. M., Roycroft, R., Tiwari, G., Hegelich, B. M., Schreiber, J., and Thirolf, P. G.

Subjects
Physics - Plasma Physics
Abstract

The fission-fusion reaction mechanism was proposed in order to generate extremely neutron-rich nuclei close to the waiting point N = 126 of the rapid neutron capture nucleosynthesis process (r-process). The production of such isotopes and the measurement of their nuclear properties would fundamentally help to increase the understanding of the nucleosynthesis of the heaviest elements in the universe. Major prerequisite for the realization of this new reaction scheme is the development of laser-based acceleration of ultra-dense heavy ion bunches in the mass range of A = 200 and above. In this paper, we review the status of laser-driven heavy ion acceleration in the light of the fission-fusion reaction mechanism. We present results from our latest experiment on heavy ion acceleration, including a new milestone with laser-accelerated heavy ion energies exceeding 5 MeV/u.

Published
2018
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10. Comparison of Performance of PV Module for Different Cooling Techniques

Author

Mishra, Kuber Nath, Tiwari, Anil Kr., Tiwari, G. N., Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, di Mare, Francesca, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, Palanisamy, Muthukumar, editor, Natarajan, Sendhil Kumar, editor, Jayaraj, Simon, editor, and Sivalingam, Murugan, editor

Published
2022
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13. En-route to the fission–fusion reaction mechanism: a status update on laser-driven heavy ion acceleration

Author

Lindner, FH, McCary, E, Jiao, X, Ostermayr, TM, Roycroft, R, Tiwari, G, Hegelich, BM, Schreiber, J, and Thirolf, PG

Subjects
laser-driven heavy ion acceleration, fission-fusion reaction mechanism, short-pulse laser, physics.plasm-ph, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Other Physical Sciences, Fluids & Plasmas
Abstract

The fission-fusion reaction mechanism was proposed in order to generate extremely neutron-rich nuclei close to the waiting point N = 126 of the rapid neutron capture nucleosynthesis process (r-process). The production of such isotopes and the measurement of their nuclear properties would fundamentally help to increase the understanding of the nucleosynthesis of the heaviest elements in the Universe. Major prerequisite for the realization of this new reaction scheme is the development of laser-based acceleration of ultra-dense heavy ion bunches in the mass range of A ≈ 200 and above. In this paper, we review the status of laser-driven heavy ion acceleration in the light of the fission-fusion reaction mechanism. We present results from our latest experiment on heavy ion acceleration, including a new milestone with laser-accelerated heavy ion energies exceeding 5 MeV u-1.

Published
2019

16. Electrical Energy and Power Generation from Three Different Photovoltaic Module Technology in Composite Climate Condition: A Comparative Study

Author

Tripathi, Rohit, Tiwari, G. N., Bhatti, T. S., Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Favorskaya, Margarita N., editor, Mekhilef, Saad, editor, Pandey, Rajendra Kumar, editor, and Singh, Nitin, editor

Published
2021
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17. Enviro–Economic Analysis and Production Cost of Distilled Water Obtained from Cooling Condensing Active Single Slope Solar Still

Author

Joshi, Poonam, Tiwari, G. N., Bhatti, T. S., Singh, V. P., Editor-in-Chief, Berndtsson, R., Editorial Board Member, Rodrigues, L. N., Editorial Board Member, Sarma, Arup Kumar, Editorial Board Member, Sherif, M. M., Editorial Board Member, Sivakumar, B., Editorial Board Member, Zhang, Q., Editorial Board Member, Pandey, Ashish, editor, Mishra, S.K., editor, Kansal, M.L., editor, Singh, R.D., editor, and Singh, V.P., editor

Published
2021
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28. Accelerator Physics at NSLS-II: Research Accomplishments in 2022

Author

Smaluk, Victor, primary, Bassi, G., additional, Khan, A., additional, Li, Y., additional, Yang, X., additional, Yu, L., additional, Tiwari, G., additional, Song, M., additional, Wang, G., additional, Choi, J., additional, Hidaka, Y., additional, Hidas, D., additional, Shaftan, T., additional, and Tanabe, T., additional

Published
2022
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