Search Results - "Bolton, P. R."

Burst intensification by singularity emitting radiation in multi-stream flows by Pirozhkov, A. S., Esirkepov, T. Zh, Pikuz, T. A., Faenov, A. Ya, Ogura, K., Hayashi, Y., Kotaki, H., Ragozin, E. N., Neely, D., Kiriyama, H., Koga, J. K., Fukuda, Y., Sagisaka, A., Nishikino, M., Imazono, T., Hasegawa, N., Kawachi, T., Bolton, P. R., Daido, H., Kato, Y., Kondo, K., Bulanov, S. V., Kando, M.

“…Burst Intensification by Singularity Emitting Radiation (BISER) is proposed. Singularities in multi-stream flows of emitting media cause constructive…”
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High temporal and spatial quality petawatt-class Ti:sapphire chirped-pulse amplification laser system by Kiriyama, Hiromitsu, Mori, Michiaki, Nakai, Y, Shimomura, T, Sasao, H, Tanoue, M, Kanazawa, S, Wakai, D, Sasao, F, Okada, H, Daito, I, Suzuki, M, Kondo, S, Kondo, K, Sugiyama, A, Bolton, P R, Yokoyama, A, Daido, H, Kawanishi, S, Kimura, T, Tajima, T

“…Optical parametric chirped-pulse amplification (OPCPA) operation with low gain by seeding with high-energy, clean pulses is shown to significantly improve the…”
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Observation of nonsequential double ionization of helium with optical tunneling by FITTINGHOFF, D. N, BOLTON, P. R, CHANG, B, KULANDER, K. C

“…We have measured the ion yields for helium ionized by 120 fs, 614 nm laser pulses for intensities near 10{sup 16} W/cm{sup 2}. We have found that for these…”
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Energy increase in multi-MeV ion acceleration in the interaction of a short pulse laser with a cluster-gas target by Fukuda, Y, Faenov, A Ya, Tampo, M, Pikuz, T A, Nakamura, T, Kando, M, Hayashi, Y, Yogo, A, Sakaki, H, Kameshima, T, Pirozhkov, A S, Ogura, K, Mori, M, Esirkepov, T Zh, Koga, J, Boldarev, A S, Gasilov, V A, Magunov, A I, Yamauchi, T, Kodama, R, Bolton, P R, Kato, Y, Tajima, T, Daido, H, Bulanov, S V

“…An approach for accelerating ions, with the use of a cluster-gas target and an ultrashort pulse laser of 150-mJ energy and 40-fs duration, is presented. Ions…”
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Multi-millijoule, nonlinear preamplifier for high intensity femtosecond Yb:YAG chirped-pulse amplification lasers at 1030 nm by Suzuki, M., Kiriyama, H., Daito, I., Okada, H., Nakai, Y., Orimo, S., Sato, M., Tamaoki, Y., Yoshii, T., Maeda, J., Matsuoka, S., Kan, H., Bolton, P. R., Daido, H., Kawanishi, S.

“…We report the highest energy broadband laser pulses at a center wavelength of 1030 nm based on optical parametric chirped-pulse amplification (OPCPA). We have…”
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Measurement of relative biological effectiveness of protons in human cancer cells using a laser-driven quasimonoenergetic proton beamline by Yogo, A., Maeda, T., Hori, T., Sakaki, H., Ogura, K., Nishiuchi, M., Sagisaka, A., Kiriyama, H., Okada, H., Kanazawa, S., Shimomura, T., Nakai, Y., Tanoue, M., Sasao, F., Bolton, P. R., Murakami, M., Nomura, T., Kawanishi, S., Kondo, K.

“…Human cancer cells are irradiated by laser-driven quasimonoenergetic protons. Laser pulse intensities at the 5 × 10 19   W / cm 2 level provide the source and…”
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Dynamics of laser-driven proton acceleration exhibited by measured laser absorptivity and reflectivity by Bin, J. H., Allinger, K., Khrennikov, K., Karsch, S., Bolton, P. R., Schreiber, J.

“…Proton acceleration from nanometer thin foils with intense laser pulses is investigated experimentally. We analyzed the laser absorptivity by parallel…”
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Application of laser-accelerated protons to the demonstration of DNA double-strand breaks in human cancer cells by Yogo, A., Sato, K., Nishikino, M., Mori, M., Teshima, T., Numasaki, H., Murakami, M., Demizu, Y., Akagi, S., Nagayama, S., Ogura, K., Sagisaka, A., Orimo, S., Nishiuchi, M., Pirozhkov, A. S., Ikegami, M., Tampo, M., Sakaki, H., Suzuki, M., Daito, I., Oishi, Y., Sugiyama, H., Kiriyama, H., Okada, H., Kanazawa, S., Kondo, S., Shimomura, T., Nakai, Y., Tanoue, M., Sasao, H., Wakai, D., Bolton, P. R., Daido, H.

“…We report the demonstrated irradiation effect of laser-accelerated protons on human cancer cells. In vitro (living) A549 cells are irradiated with…”
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Instrumentation for diagnostics and control of laser-accelerated proton (ion) beams by Bolton, P.R, Borghesi, M, Brenner, C, Carroll, D.C, De Martinis, C, Fiorini, F, Flacco, A, Floquet, V, Fuchs, J, Gallegos, P, Giove, D, Green, J.S, Green, S, Jones, B, Kirby, D, McKenna, P, Neely, D, Nuesslin, F, Prasad, R, Reinhardt, S, Roth, M, Schramm, U, Scott, G.G, Ter-Avetisyan, S, Tolley, M, Turchetti, G, Wilkens, J.J

“…Abstract Suitable instrumentation for laser-accelerated proton (ion) beams is critical for development of integrated, laser-driven ion accelerator systems…”
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Percutaneous endoscopic gastrostomy: a prospective audit of the impact of guidelines in two district general hospitals in the United Kingdom by Sanders, D S, Carter, M J, D'Silva, J, James, G, Bolton, R P, Willemse, P J, Bardhan, K D

“…Percutaneous endoscopic gastrostomy (PEG) is the accepted method for long-term enteral nutrition. Recent studies have suggested a higher mortality than was…”
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Insertable pulse cleaning module with a saturable absorber pair and a compensating amplifier for high-intensity ultrashort-pulse lasers by Yogo, A, Kondo, K, Mori, M, Kiriyama, H, Ogura, K, Shimomura, T, Inoue, N, Fukuda, Y, Sakaki, H, Jinno, S, Kanasaki, M, Bolton, P R

“…We demonstrate the performance of an efficient insertable pulse cleaning module (IPCM) that uses a saturable absorber (SA) pair with a compensating multi-pass…”
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Hypomagnesaemia due to malabsorption is not always responsive to oral magnesium oxide supplementation alone by Arasaradnam, R P, Bolton, R P

“…[...]we have managed this woman while still taking magnesium oxide supplements with almost 3-6 monthly (fig 1) intravenous magnesium replacement through a…”
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Faecal metronidazole concentrations during oral and intravenous therapy for antibiotic associated colitis due to Clostridium difficile by Bolton, R P, Culshaw, M A

“…Faecal metronidazole and hydroxymetronidazole concentrations measured by high pressure liquid chromatography are reported during 10 episodes of Clostridium…”
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Hundred mJ, sub-picoseconds, high temporal contrast OPCPA/Yb:YAG ceramic thin disk hybrid laser system by Suzuki, M., Kiriyama, H., Daito, I., Ochi, Y., Okada, H., Sato, M., Tamaoki, Y., Yoshii, T., Maeda, J., Matsuoka, S., Kan, H., Bolton, P. R., Sugiyama, A., Kondo, K., Kawanishi, S.

“…The authors have demonstrated an optical parametric chirped-pulse amplification (OPCPA)/Yb:YAG ceramic thin disk hybrid laser system having hundred mJ level…”
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Survival analysis in percutaneous endoscopic gastrostomy feeding: a worse outcome in patients with dementia by Sanders, D.S, Carter, M.J, D’Silva, J, James, G, Bolton, R.P, Bardhan, K.D

“…OBJECTIVE: Percutaneous endoscopic gastrostomy (PEG) feeding has been validated in specific clinical situations such as acute stroke with dysphagia and…”
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Measured and simulated transport of 1.9 MeV laser-accelerated proton bunches through an integrated test beam line at 1 Hz by Nishiuchi, M., Sakaki, H., Hori, T., Bolton, P. R., Ogura, K., Sagisaka, A., Yogo, A., Mori, M., Orimo, S., Pirozhkov, A. S., Daito, I., Kiriyama, H., Okada, H., Kanazawa, S., Kondo, S., Shimomura, T., Tanoue, M., Nakai, Y., Sasao, H., Wakai, D., Daido, H., Kondo, K., Souda, H., Tongu, H., Noda, A., Iseki, Y., Nagafuchi, T., Maeda, K., Hanawa, K., Yoshiyuki, T., Shirai, T.

“…A laser-driven repetition-rated 1.9 MeV proton beam line composed of permanent quadrupole magnets (PMQs), a radio frequency (rf) phase rotation cavity, and a…”
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Audit of proton pump inhibitor (PPI) prescribing: are NICE guidelines being followed? by Arasaradnam, RP, Woodward, T, Parrack, L, Bartlett, J, Bolton, RP

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Toward integrated laser-driven ion accelerator systems at the photo-medical research center in Japan by Bolton, P.R., Hori, T., Kiriyama, H., Mori, M., Sakaki, H., Sutherland, K., Suzuki, M., Wu, J., Yogo, A.

“…Goals and early progress at the Photo-Medical Research Center are summarized. Laser-driven ion beam radiotherapy can require compact repetition-rated laser…”
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Portable rhizotron and color scanner system for monitoring root development by Pan, W.L. (Washington State Univ., Pullman, WA (USA). Dept. of Crop and Soil Sciences), Bolton, R.P, Lundquist, E.J, Hiller, L.K

“…Rhizotrons allow the examination of spatial and temporal in situ root development. Permanent rhizotron installations provide 2-D images of whole root profiles,…”
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Asymptomatic neonatal colonisation by Clostridium difficile by Bolton, R P, Tait, S K, Dear, P R, Losowsky, M S

“…In a prospective survey of infants born in a single maternity unit, asymptomatic faecal colonisation by Clostridium difficile occurred in 31 (47%) of 66 babies…”
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