Search Results - "Shigemori, K."

Spatiotemporal dynamics of fast electron heating in solid-density matter via XFEL by Sawada, H., Yabuuchi, T., Higashi, N., Iwasaki, T., Kawasaki, K., Maeda, Y., Izumi, T., Nakagawa, Y., Shigemori, K., Sakawa, Y., Curry, C. B., Frost, M., Iwata, N., Ogitsu, T., Sueda, K., Togashi, T., Hu, S. X., Glenzer, S. H., Kemp, A. J., Ping, Y., Sentoku, Y.

“…High-intensity, short-pulse lasers are crucial for generating energetic electrons that produce high-energy-density (HED) states in matter, offering potential…”
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Ultrahigh-energy density state in nanowire arrays irradiated with picosecond kilojoule-class ultra-intense laser by Tanaka, D., Maeda, Y., Hironaka, Y., Kawasaki, K., Higashi, N., Iwata, N., Sentoku, Y., Kodama, R., Ozaki, N., Somekawa, T., Shinguubara, S., Shimizu, T., Sawada, H., Shigemori, K.

“…Ultrahigh-energy density (UHED) states greater than 1 Gbar pressure are typically observed under extreme conditions, such as in the core of an inertial…”
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Fabrication of nanocrystalline diamond capsules by hot-filament chemical vapor deposition for direct-drive inertial confinement fusion experiments by Kawasaki, K., Yamada, H., Nagatomo, H., Hironaka, Y., Yamanoi, K., Tanaka, D., Idesaka, T., Mokuno, Y., Chayahara, A., Shimaoka, T., Mima, K., Somekawa, T., Tsukamoto, M., Sato, Y., Iwamoto, A., Shigemori, K.

“…Direct-drive inertial confinement fusion (ICF), where a fuel capsule is imploded by high-power laser beams to cause ignition, is a promising energy production…”
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Preliminary results from the LMJ-PETAL experiment on hot electrons characterization in the context of shock ignition by Baton, S.D., Colaïtis, A., Rousseaux, C., Boutoux, G., Brygoo, S., Jacquet, L., Koenig, M., Batani, D., Casner, A., Bel, E. Le, Raffestin, D., Tentori, A., Tikhonchuk, V., Trela, J., Reverdin, C., Le-Deroff, L., Theobald, W., Cristoforetti, G., Gizzi, L.A., Koester, P., Labate, L., Shigemori, K.

“…In the Shock Ignition scheme, the spike pulse intensity is well above the threshold of parametric instabilities, which produce a considerable amount of hot…”
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Recent progress in matter in extreme states created by laser by Batani, K., Batani, D., He, X. T., Shigemori, K.

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Liquid Structure of Tantalum under Internal Negative Pressure by Katagiri, K, Ozaki, N, Ohmura, S, Albertazzi, B, Hironaka, Y, Inubushi, Y, Ishida, K, Koenig, M, Miyanishi, K, Nakamura, H, Nishikino, M, Okuchi, T, Sato, T, Seto, Y, Shigemori, K, Sueda, K, Tange, Y, Togashi, T, Umeda, Y, Yabashi, M, Yabuuchi, T, Kodama, R

“…In situ femtosecond x-ray diffraction measurements and ab initio molecular dynamics simulations were performed to study the liquid structure of tantalum shock…”
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Flash Kα radiography of laser-driven solid sphere compression for fast ignition by Sawada, H., Lee, S., Shiroto, T., Nagatomo, H., Arikawa, Y., Nishimura, H., Ueda, T., Shigemori, K., Sunahara, A., Ohnishi, N., Beg, F. N., Theobald, W., Pérez, F., Patel, P. K., Fujioka, S.

“…Time-resolved compression of a laser-driven solid deuterated plastic sphere with a cone was measured with flash Kα x-ray radiography. A spherically converging…”
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Fast heating of ultrahigh-density plasma as a step towards laser fusion ignition by Kodama, R, Norreys, P. A, Mima, K, Dangor, A. E, Evans, R. G, Fujita, H, Kitagawa, Y, Krushelnick, K, Miyakoshi, T, Miyanaga, N, Norimatsu, T, Rose, S. J, Shozaki, T, Shigemori, K, Sunahara, A, Tampo, M, Tanaka, K. A, Toyama, Y, Yamanaka, T, Zepf, M

“…Modern high-power lasers can generate extreme states of matter that are relevant to astrophysics, equation-of-state studies and fusion energy research…”
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Multibeam laser–plasma interaction at the Gekko XII laser facility in conditions relevant for direct-drive inertial confinement fusion by Cristoforetti, G., Koester, P., Atzeni, S., Batani, D., Fujioka, S., Hironaka, Y., Hüller, S., Idesaka, T., Katagiri, K., Kawasaki, K., Kodama, R., Mancelli, D., Nicolai, Ph, Ozaki, N., Schiavi, A., Shigemori, K., Takizawa, R., Tamagawa, T., Tanaka, D., Tentori, A., Umeda, Y., Yogo, A., Gizzi, L. A.

“…Laser–plasma interaction and hot electrons have been characterized in detail in laser irradiation conditions relevant for direct-drive inertial confinement…”
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Dependences of morphology and surface roughness on growth conditions of diamond capsules for the direct-drive inertial confinement fusion by Iwasaki, T., Kawasaki, K., Yamada, H., Ohmagari, S., Takeuchi, D., Chayahara, A., Mokuno, Y., Hironaka, Y., Shigemori, K.

“…In order to achieve the ignition by direct-drive inertial confinement fusion (ICF), smooth and symmetric fuel capsule is required. Our previous research found…”
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Fast heating scalable to laser fusion ignition by Kodama, R

“…Rapid heating of a compressed fusion fuel by a short-duration laser pulse is a promising route to generating energy by nuclear fusion, and has been…”
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Prepulse-free petawatt laser for a fast ignitor by Kitagawa, Y., Fujita, H., Kodama, R., Yoshida, H., Matsuo, S., Jitsuno, T., Kawasaki, T., Kitamura, H., Kanabe, T., Sakabe, S., Shigemori, K., Miyanaga, N., Izawa, Y.

“…We have developed a prepulse-free short-pulse Nd:glass laser system of 0.9-PW peak power to heat a pre-imploded high-density plasma. An optical parametric…”
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Comprehensive diagnosis of growth rates of the ablative Rayleigh-Taylor instability by Azechi, H, Sakaiya, T, Fujioka, S, Tamari, Y, Otani, K, Shigemori, K, Nakai, M, Shiraga, H, Miyanaga, N, Mima, K

“…The growth rate of the ablative Rayleigh-Taylor instability is approximated by gamma = square root[kg/(1 + kL)] - beta km/rho(a), where k is the perturbation…”
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Shock Hugoniot Data for Water up to 5 Mbar Obtained with Quartz Standard at High-Energy Laser Facilities by Mancelli, D., Errea, I., Tentori, A., Turianska, O., Larreur, H., Katagiri, K., Ozaki, N., Kamimura, N., Kamibayashi, D., Ishida, K., Ogura, H., Kawasaki, K., Maeda, Y., Hironaka, Y., Shigemori, K., Batani, K., Schaumann, G., Rosmej, O., Neumayer, P., Zielbauer, B., Martynenko, A. S., Filippov, E. D., Pikuz, S., Batani, D.

“…In this work, we present experimental results on the behavior of liquid water at megabar pressure. The experiment was performed using the HIPER (High-Intensity…”
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Effects of hydrogen concentration in ablator material on stimulated Raman scattering, two-plasmon decay, and hot electrons for direct-drive inertial confinement fusion by Kawasaki, K., Cristoforetti, G., Idesaka, T., Hironaka, Y., Tanaka, D., Batani, D., Fujioka, S., Gizzi, L. A., Hata, M., Johzaki, T., Katagiri, K., Kodama, R., Matsuo, S., Nagatomo, H., Nicolai, Ph, Ozaki, N., Sentoku, Y., Takizawa, R., Yogo, A., Yamada, H., Shigemori, K.

“…Laser plasma instabilities, such as stimulated Raman scattering (SRS) and two-plasmon decay (TPD), are basic phenomena in intense laser science and…”
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Experimental evidence of impact ignition: 100-fold increase of neutron yield by impactor collision by Azechi, H, Sakaiya, T, Watari, T, Karasik, M, Saito, H, Ohtani, K, Takeda, K, Hosoda, H, Shiraga, H, Nakai, M, Shigemori, K, Fujioka, S, Murakami, M, Nagatomo, H, Johzaki, T, Gardner, J, Colombant, D G, Bates, J W, Velikovich, A L, Aglitskiy, Y, Weaver, J, Obenschain, S, Eliezer, S, Kodama, R, Norimatsu, T, Fujita, H, Mima, K, Kan, H

“…We performed integrated experiments on impact ignition, in which a portion of a deuterated polystyrene (CD) shell was accelerated to about 600 km/s and was…”
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Characterization of extreme ultraviolet emission from laser-produced spherical tin plasma generated with multiple laser beams by Shimada, Y., Nishimura, H., Nakai, M., Hashimoto, K., Yamaura, M., Tao, Y., Shigemori, K., Okuno, T., Nishihara, K., Kawamura, T., Sunahara, A., Nishikawa, T., Sasaki, A., Nagai, K., Norimatsu, T., Fujioka, S., Uchida, S., Miyanaga, N., Izawa, Y., Yamanaka, C.

“…Spherical solid tin targets were illuminated uniformly with twelve beams from the Gekko XII laser system to create spherical plasmas, and the extreme…”
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Radiative Jet Experiments of Astrophysical Interest Using Intense Lasers by Farley, D. R., Estabrook, K. G., Glendinning, S. G., Glenzer, S. H., Remington, B. A., Shigemori, K., Stone, J. M., Wallace, R. J., Zimmerman, G. B., Harte, J. A.

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Investigation of ultrafast laser-driven radiative blast waves by Edwards, M J, MacKinnon, A J, Zweiback, J, Shigemori, K, Ryutov, D, Rubenchik, A M, Keilty, K A, Liang, E, Remington, B A, Ditmire, T

“…We have examined the evolution of cylindrically symmetric blast waves produced by the deposition of femtosecond laser pulses in gas jets. In high- Z gases…”
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High-resolution X-ray imaging in fast ignition experiment using Gekko and LFEX lasers by Koga, M., Ishii, Y., Sogo, T., Shigemori, K., Shiraga, H., Fujioka, S., Azechi, H.

“…We improved diagnostic instruments to measure X-ray images in a hard X-ray harsh environment and succeeded in obtaining clear images with X-ray framing camera…”
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