TITLE

Effect of foil target thickness on fast proton generation driven by ultrashort-pulse laser

AUTHOR(S)
Badziak, J.; Woryna, E.; Parys, P.; Wołowski, J.; Platonov, K. Yu.; Vankov, A. B.
PUB. DATE
April 2002
SOURCE
Journal of Applied Physics;4/15/2002, Vol. 91 Issue 8, p5504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The influence of the target foil thickness on the characteristics of a proton beam produced by the interaction of a 1-ps laser pulse with a plastic foil target at intensities near 10[sup 17] W/cm[sup 2] has been investigated. It is shown that, for maximizing the energies and/or the current of forward-emitted protons, the target thickness must be properly selected. It should be smaller than the hot electron range in the target but greater than the characteristic path length of the electron heat wave generated by the prepulse and the leading edge of the laser pulse. If the target thickness is smaller than the heat wave path length, both the maximum and the mean proton energies can be a decreasing function of laser energy. © 2002 American Institute of Physics.
ACCESSION #
6416221

 

Related Articles

  • Acceleration of Proton Beams by Relativistically Self-focused Intense Laser Pulses. Koga, James; Nakajima, Kazuhisa; Yamagiwa, Mitsuru; Zhidkov, Alexei // AIP Conference Proceedings;2002, Vol. 634 Issue 1, p50 

    Two dimensional particle-in-cell simulations are performed which show the formation of an extremely large electrostatic field near the front of a relativisitically self-focused laser pulse propagating in an underdense plasma. The size of the field is found to reach a maximum of ~ 6.5 TV/m for a...

  • Comparative spectra and efficiencies of ions laser-accelerated forward from the front and rear surfaces of thin solid foils. Fuchs, J.; Sentoku, Y.; d'Humières, E.; Cowan, T. E.; Cobble, J.; Audebert, P.; Kemp, A.; Nikroo, A.; Antici, P.; Brambrink, E.; Blazevic, A.; Campbell, E. M.; Fernández, J. C.; Gauthier, J.-C.; Geissel, M.; Hegelich, M.; Karsch, S.; Popescu, H.; Renard-LeGalloudec, N.; Roth, M. // Physics of Plasmas;May2007, Vol. 14 Issue 5, p053105 

    The maximum energy of protons that are accelerated forward by high-intensity, short-pulse lasers from either the front or rear surfaces of thin metal foils is compared for a large range of laser intensities and pulse durations. In the regime of moderately long laser pulse durations...

  • Angle-dependent modulated spectral peaks of proton beams generated in ultrashort intense laser-solid interactions. Su, L. N.; Hu, Z. D.; Zheng, Y.; Liu, M.; Li, Y. T.; Wang, W. M.; Sheng, Z. M.; Yuan, X. H.; Xu, M. H.; Shen, Z. W.; Fan, H. T.; Chen, L. M.; Lu, X.; Ma, J. L.; Wang, X.; Wang, Z. H.; Wei, Z. Y.; Zhang, J. // Physics of Plasmas;2014, Vol. 21 Issue 9, p1 

    Proton acceleration from 4 im thick aluminum foils irradiated by 30-TW Ti:sapphire laser pulses is investigated using an angle-resolved proton energy spectrometer. We find that a modulated spectral peak at ~0.82 MeV is presented at 2.5° off the target normal direction. The divergence angle of...

  • Self-induced magnetic focusing of proton beams by Weibel-like instability in the laser foil-plasma interactions. Yan, X. Q.; Chen, M.; Sheng, Z. M.; Chen, J. E. // Physics of Plasmas;Apr2009, Vol. 16 Issue 4, p044501 

    In the laser foil-plasma interaction the effects of Weibel-like instability have been explored. The self-induced magnetic fields result in the merging of filaments formed at the earlier stage of the instability and subsequent formation of a plasma clump close to the laser propagation axis. A...

  • Development of Laser-Driven Proton and Electron Sources Using APRI 100-TW Ti:Sapphire Laser System. Choi, I. W.; Hafz, N.; Jeong, T. M.; Kim, H. T.; Kim, C. M.; Yu, T. J.; Sung, J. H.; Hong, K.-H.; Lee, S. K.; Noh, Y.-C.; Ko, D.-K.; Lee, J.; Orimo, S.; Yogo, A.; Sagisaka, A.; Ogura, K.; Mori, M.; Li, Z.; Ma, J.; Pirozhkov, A. S. // AIP Conference Proceedings;7/15/2008, Vol. 1024 Issue 1, p165 

    At the Advanced Photonics Research Institute (APRI) in Korea, we have a Ti:sapphire laser system which delivers laser pulses of 100-TW peak power and 32-fs pulse duration at the repetition rate of 10 Hz. This laser facility is being used to develop compact laser-driven proton and electron...

  • Femtosecond laser driven high-flux highly collimated MeV-proton beam. Nishiuchi, M.; Daido, H.; Yogo, A.; Orimo, S.; Ogura, K.; Ma, J.; Sagisaka, A.; Mori, M.; Pirozhkov, A. S.; Kiriyama, H.; Bulanov, S. V.; Esirkepov, T. Zh.; Choi, Il Woo; Yu, Tae Jun; Shung, Jae Hee; Jeong, Tae Moon; Kim, Hyung Taek; Hong, Kyung-Ham; Noh, Young-Chul; Ko, Do-Kyeong // AIP Conference Proceedings;7/15/2008, Vol. 1024 Issue 1, p137 

    Highlly collimated energetic protons whose energies are up to 4 MeV are generated by an intense femtosecond Titanium Sappheire laser pulse interacting with a 7.5, 12.5, and 25 μm-thick Polyimide tape target and 5 μm-thick copper target. We find no clear difference on the proton spectra...

  • Generation and manipulation of proton beams by ultra-short laser pulses. Nickles, P. V.; Schnürer, M.; Steinke, S.; Sokollik, T.; Ter-Avetisyan, S.; Andreev, A.; Sandner, W. // AIP Conference Proceedings;7/25/2009, Vol. 1153 Issue 1, p140 

    Applying a 21-channel Thomson spectrometer setup has revealed further insight to the connection between spatial and spectral beam characteristic of laser accelerated protons. Analyzing the central emission cone (plus/minus 3 degree) shows an increasing beam divergency for protons with increasing...

  • Proton Acceleration to Therapeutic Energies with Ultra-Intense Ultra-Clean and Ultra-Short Laser Pulses. Reed, S. A.; Bulanov, S. S.; Chvykov, V.; Brantov, A.; Bychenkov, V. Yu.; Kalinchenko, G.; Matsuoka, T.; Rousseau, P.; Yanovsky, V.; Litzenberg, D. W.; Maksimchuk, A. // AIP Conference Proceedings;2006, Vol. 877 Issue 1, p430 

    The acceleration of protons to therapeutic energies of over 200 MeV by short-pulse, high-intensity lasers requires very high temporal intensity contrast. We describe improvements to the contrast ratio of the laser pulse produced by a multi-terawatt chirped pulsed amplification (CPA) Ti:sapphire...

  • A novel backscatter focus diagnostic for the TRIDENT 200 TW laser. Gautier, D. C.; Flippo, K. A.; Letzring, S. A.; Shimada, J. Workman T.; Johnson, R. P.; Hurry, T. R.; Gaillard, S. A.; Hegelich, B. M. // Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p10F547 

    Here we present the first direct focal spot images and analysis of an ultrahigh intensity short-pulse laser focus (>5×1019 W/cm2) on target. Such a focal spot characterization is typically done previous to the shot with a low-power alignment beam using equivalent plane imaging techniques....

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics