Intense ion beams accelerated by petawatt-class lasers

Markus Roth; Thomas E. Cowan; Curtis G. Brown; W. F. Fountain; Steven P. Hatchett II; J. Johnson; Michael H. Key; Deanna Marie Pennington; Michael D. Perry; Thomas W. Phillips; Thomas Craig Sangster; Mike S. Singh; Richard A. Snavely; Mark A. Stoyer; Scott C. Wilks; K. Yasuike

doi:10.1117/12.425658

23 April 2001 Intense ion beams accelerated by petawatt-class lasers

Markus Roth, Thomas E. Cowan, Curtis G. Brown, W. F. Fountain, Steven P. Hatchett II, J. Johnson, Michael H. Key, Deanna Marie Pennington, Michael D. Perry, Thomas W. Phillips, Thomas Craig Sangster, Mike S. Singh, Richard A. Snavely, Mark A. Stoyer, Scott C. Wilks, K. Yasuike

Author Affiliations +

Proceedings Volume 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter; (2001) https://doi.org/10.1117/12.425658
Event: 26th European Conference on Laser Interaction with Matter (ECLIM 2000), 2000, Prague, Czech Republic

Abstract

The LLNL Petawatt Laser has achieved focused intensities up to 6 by 10²⁰ W/cm². IN plasmas created by this laser, the quiver energy of target electrons exceed several MeV. Recent experiments revealed an intense, collimated beam of high-energy is converted into protons which leads to an energy content of 30J in a pulse of less than 10 ps. The beam shows a broad particle energy spectrum with a sharp cut off and an almost mono-energetic part above 55 MeV. With their short pulse duration, high particle energy and large luminosity these beams are promising candidates in numerous applications, such as short-pulse injectors for laser accelerators or as the ignitor for fast ignition ICF. Using intense proton beams the fast ignitor concept may also become more attractive in heavy-ion fusion due to the possibility to work with indirectly driven targets. Finally, the acceleration is not restricted to protons and the use of tailored target surfaces may allow to accelerate more massive ions to similar energy per nucleon.

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Markus Roth, Thomas E. Cowan, Curtis G. Brown, W. F. Fountain, Steven P. Hatchett II, J. Johnson, Michael H. Key, Deanna Marie Pennington, Michael D. Perry, Thomas W. Phillips, Thomas Craig Sangster, Mike S. Singh, Richard A. Snavely, Mark A. Stoyer, Scott C. Wilks, and K. Yasuike "Intense ion beams accelerated by petawatt-class lasers", Proc. SPIE 4424, ECLIM 2000: 26th European Conference on Laser Interaction with Matter, (23 April 2001); https://doi.org/10.1117/12.425658

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KEYWORDS

Electrons

Fusion energy

Ions

Particles

Plasmas

Ion beams

Spectrometers

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