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Journal Articles

Towards a novel laser-driven method of exotic nuclei extraction-acceleration for fundamental physics and technology

Nishiuchi, Mamiko*; Sakaki, Hironao*; Esirkepov, T. Zh.*; Nishio, Katsuhisa; Pikuz, T. A.*; Faenov, A. Ya.*; Skobelev, I. Yu.*; Orlandi, R.; Pirozhkov, A. S.*; Sagisaka, Akito*; et al.

Plasma Physics Reports, 42(4), p.327 - 337, 2016/04

 Times Cited Count:14 Percentile:55.28(Physics, Fluids & Plasmas)

A combination of a petawatt laser and nuclear physics techniques can crucially facilitate the measurement of exotic nuclei properties. With numerical simulations and laser-driven experiments we show prospects for the Laser-driven Exotic Nuclei extraction-acceleration method proposed in [M. Nishiuchi et al., Phys. Plasmas 22, 033107 (2015)]: a femtosecond petawatt laser, irradiating a target bombarded by an external ion beam, extracts from the target and accelerates to few GeV highly charged short-lived heavy exotic nuclei created in the target via nuclear reactions.

Journal Articles

Relativistic tennis with photons; Frequency up-shifting, light intensification and ion acceleration with flying mirrors

Bulanov, S. V.; Esirkepov, T. Zh.; Kando, Masaki; Koga, J. K.; Pirozhkov, A. S.; Rosanov, N. N.*; Zhidkov, A.*

AIP Conference Proceedings 1320, p.235 - 243, 2010/12

Journal Articles

The X-ray source; Double-sided relativistic mirror

Esirkepov, T. Zh.; Bulanov, S. V.; Kando, Masaki; Pirozhkov, A. S.; Zhidkov, A.*

JAEA-Conf 2010-002, p.116 - 119, 2010/06

Journal Articles

Method of observing the spot where full-power counter-propagating laser pulses collide in plasma media

Kawase, Keigo; Kando, Masaki; Pirozhkov, A. S.; Homma, Takayuki; Kameshima, Takashi*; Daito, Izuru; Hayashi, Yukio; Kotaki, Hideyuki; Fukuda, Yuji; Esirkepov, T. Zh.; et al.

Applied Physics Express, 3, p.016101_1 - 016101_3, 2010/01

 Times Cited Count:2 Percentile:9.87(Physics, Applied)

A new observation method of providing a precise collision of two full-power counter-propagating laser pulses is proposed and demonstrated. The method is a combination of top-view imaging, side-view shadowgram, extra-ultraviolet (XUV) spectrograph, and returning pulse monitoring. This allows us to align two counter-propagating laser pulses at their colliding point in a real situation (full power laser operation in plasma). The achieved spatial resolution of the monitor in the plasma is 1.35 $$mu{rm m}$$ with the precision level of alignment better than 15 $$mu{rm m}$$ even when there is plasma present.

Journal Articles

Dependence of the ion energy on the parameters of the laser pulse and target in the radiation-pressure-dominated regime of acceleration

Echkina, E. Yu.*; Inovenkov, I. N.*; Esirkepov, T. Zh.; Pegoraro, F.*; Borghesi, M.*; Bulanov, S. V.

Plasma Physics Reports, 36(1), p.15 - 29, 2010/01

 Times Cited Count:14 Percentile:6.45(Physics, Fluids & Plasmas)

Journal Articles

Dependence of the ion energy on the parameters of the laser pulse and target in the radiation-pressure-dominated regime of acceleration

Echkina, E. Yu.*; Inovenkov, I. N.*; Esirkepov, T. Zh.; Pegoraro, F.*; Borghesi, M.*; Bulanov, S. V.

Plasma Physics Reports, 36(1), p.15 - 29, 2010/01

Journal Articles

Enhancement of photon number reflected by the relativistic flying mirror

Kando, Masaki; Pirozhkov, A. S.; Kawase, Keigo; Esirkepov, T. Zh.; Fukuda, Yuji; Kiriyama, Hiromitsu; Okada, Hajime; Daito, Izuru; Kameshima, Takashi; Hayashi, Yukio; et al.

Physical Review Letters, 103(23), p.235003_1 - 235003_4, 2009/12

 Times Cited Count:108 Percentile:93.63(Physics, Multidisciplinary)

Journal Articles

High-power laser-driven source of ultra-short X-ray and gamma-ray pulses

Esirkepov, T. Zh.; Bulanov, S. V.; Zhidkov, A.*; Pirozhkov, A. S.; Kando, Masaki

European Physical Journal D, 55(2), p.457 - 463, 2009/11

 Times Cited Count:11 Percentile:47.91(Optics)

Journal Articles

Relativistic laser-matter interaction and relativistic laboratory astrophysics

Bulanov, S. V.; Esirkepov, T. Zh.; Habs, D.*; Pegoraro, F.*; Tajima, Toshiki*

European Physical Journal D, 55(2), p.483 - 507, 2009/11

 Times Cited Count:114 Percentile:80.05(Optics)

Journal Articles

Characteristics of light reflected from a dense ionization wave with a tunable velocity

Zhidkov, A.*; Esirkepov, T. Zh.; Fujii, Takashi*; Nemoto, Koshichi*; Koga, J. K.; Bulanov, S. V.

Physical Review Letters, 103(21), p.215003_1 - 215003_4, 2009/11

 Times Cited Count:19 Percentile:67.99(Physics, Multidisciplinary)

Journal Articles

Electron optical injection with head-on and countercrossing colliding laser pulses

Kotaki, Hideyuki; Daito, Izuru; Kando, Masaki; Hayashi, Yukio; Kawase, Keigo; Kameshima, Takashi*; Fukuda, Yuji; Homma, Takayuki; Ma, J.*; Chen, L. M.*; et al.

Physical Review Letters, 103(19), p.194803_1 - 194803_4, 2009/11

 Times Cited Count:60 Percentile:87.61(Physics, Multidisciplinary)

Journal Articles

High energy negative ion generation by Coulomb implosion mechanism

Nakamura, Tatsufumi; Fukuda, Yuji; Yogo, Akifumi; Tampo, Motonobu; Kando, Masaki; Hayashi, Yukio; Kameshima, Takashi*; Pirozhkov, A. S.; Esirkepov, T. Zh.; Pikuz, T. A.*; et al.

Physics of Plasmas, 16(11), p.113106_1 - 113106_8, 2009/11

 Times Cited Count:16 Percentile:49.56(Physics, Fluids & Plasmas)

Generation of high energy negative ions from laser plasmas by Coulomb implosion mechanism is investigated. When clusters or underdense plasmas are irradiated by an intense laser pulse, positive ions are accelerated inside the clusters or in the self-focusing channel by the Coulomb explosion. This could lead to the acceleration of negative ions towards target center. The maximum energy of negative ions is typically several times lower than that of positive ions. A theoretical description and corresponding Particle-in-Cell simulations of Coulomb implosion mechanism are presented. We show the evidence of the negative ion acceleration observed in our experiments using high intensity laser pulse and the cluster-gas targets.

Journal Articles

Energy increase in multi-MeV ion acceleration in the interaction of a short pulse laser with a cluster-gas target

Fukuda, Yuji; Faenov, A. Ya.; Tampo, Motonobu; Pikuz, T. A.*; Nakamura, Tatsufumi; Kando, Masaki; Hayashi, Yukio; Yogo, Akifumi; Sakaki, Hironao; Kameshima, Takashi*; et al.

Physical Review Letters, 103(16), p.165002_1 - 165002_4, 2009/10

 Times Cited Count:178 Percentile:96.61(Physics, Multidisciplinary)

A new approach for accelerating ions, based on the use of a cluster-gas target and a compact ultrashort pulse laser, is presented. It is shown that ions with energy 10-20 MeV per nucleon having a small divergence (full angle) of 3.4$$^{circ}$$ are generated, corresponding to an approximately tenfold increase in the ion energies compared to previous experiments using solid targets. It is inferred from a particle-in-cell code simulation that the high energy ions are generated at the rear side of the target due to the formation of a strong dipole vortex structure in near-critical density plasmas.

Journal Articles

Experimental studies of the high and low frequency electromagnetic radiation produced from nonlinear laser-plasma interactions

Kando, Masaki; Pirozhkov, A. S.; Fukuda, Yuji; Esirkepov, T. Zh.; Daito, Izuru; Kawase, Keigo; Ma, J. L.*; Chen, L. M.*; Hayashi, Yukio; Mori, Michiaki; et al.

European Physical Journal D, 55(2), p.465 - 474, 2009/09

 Times Cited Count:19 Percentile:63.78(Optics)

Nonlinear interaction of intense laser beams with plasma causes a number of different regimes of generation of high energy particle beams and of strong radiation with the emitted photon energy from the X-ray to THz frequency range. The review of the first proof-of-principle experiment and the latest progress on the flying mirror is presented. A low frequency EM radiation emission has also been observed in our experiments. The interpretation invokes the relativistic electromagnetic solitons. The solitons are formed in an underdense plasma in the process of the laser pulse frequency downshift. They store a portion of EM wave energy with the polarization inherited from the laser and emit it at the plasma-vacuum interface in a form of the low frequency EM bursts. We present the results of the polarization-resolved measurements.

Journal Articles

Observation of UV harmonics from a thin-foil target in the high-intensity laser-driven proton generation

Sagisaka, Akito; Pirozhkov, A. S.; Ma, J.-L.; Mori, Michiaki; Yogo, Akifumi; Ogura, Koichi; Orimo, Satoshi; Nishiuchi, Mamiko; Kiriyama, Hiromitsu; Kanazawa, Shuhei; et al.

Journal of Plasma and Fusion Research SERIES, Vol.8, p.464 - 467, 2009/09

We measure the UV harmonics from a thin-foil target by changing the laser pulse duration in the high-energy proton generation. The maximum proton energies are around 1 MeV. In the case of the $$sim$$500 fs, the peaks of UV harmonics up to fourth-order clearly appear. The spectra are broadened and shifted at the pulse durations of $$sim$$100 fs and $$sim$$30 fs.

Journal Articles

Demonstration of flying mirror with improved efficiency

Pirozhkov, A. S.; Kando, Masaki; Esirkepov, T. Zh.; Fukuda, Yuji; Chen, L.-M.*; Daito, Izuru; Ogura, Koichi; Homma, Takayuki; Hayashi, Yukio; Kotaki, Hideyuki; et al.

AIP Conference Proceedings 1153, p.274 - 284, 2009/07

Journal Articles

Ion acceleration in the interaction of short pulse laser radiation with the cluster-gas target

Fukuda, Yuji; Faenov, A. Ya.; Tampo, Motonobu; Pikuz, T. A.*; Nakamura, Tatsufumi; Kando, Masaki; Hayashi, Yukio; Yogo, Akifumi; Sakaki, Hironao; Kameshima, Takashi; et al.

AIP Conference Proceedings 1153, p.85 - 93, 2009/07

When the target consists of solid-density clusters embedded in the background gas, its irradiation by high intensity laser light renders ion acceleration a truly unique property. We present that the cluster-gas target, which consists of submicron-sized clusters and background gases, irradiated by a few TW laser pulse produces high energy ions upward of the order of 10-20 MeV/n in the forward direction.

Journal Articles

On-target contrast diagnostic via specular reflectivity measurement

Pirozhkov, A. S.; Choi, I. W.*; Sung, J. H.*; Lee, S. K.*; Yu, T. J.*; Jeong, T. M.*; Kim, I. J.*; Hafz, N.*; Kim, C. M.*; Pae, K. H.*; et al.

AIP Conference Proceedings 1153, p.7 - 15, 2009/07

Journal Articles

Effects of the laser pulse irradiation point on a double layer target on the accelerated ion beam parameters

Morita, Toshimasa; Bulanov, S. V.; Esirkepov, T. Zh.; Koga, J. K.; Yamagiwa, Mitsuru

AIP Conference Proceedings 1153, p.103 - 112, 2009/07

In proton acceleration by a laser pulse obliquely incident on a double layer target, it is shown by PIC simulations that the energy spread of the generated protons can be reduced by irradiating the laser pulse on to the off-center position of the target. This provides a way to control the proton energy spectrum. The high energy protons are found to come from an area shifted from the initial target center towards the propagation direction of the laser pulse. We show that the high energy protons with much smaller energy spread can be obtained by appropriately adjusting the size and position of the second proton layer.

Journal Articles

Boosted high-harmonics pulse from a double-sided relativistic mirror

Esirkepov, T. Zh.; Bulanov, S. V.; Kando, Masaki; Pirozhkov, A. S.; Zhidkov, A.*

Physical Review Letters, 103(2), p.025002_1 - 025002_4, 2009/07

 Times Cited Count:58 Percentile:87.23(Physics, Multidisciplinary)

65 (Records 1-20 displayed on this page)