Proton Radiography of a Laser-Driven Implosion

A.J. Mackinnon, P.K. Patel, M. Borghesi, R.C. Clarke, R.R. Freeman, H. Habara, S.P. Hatchett, D. Hey, D.G. Hicks, S. Kar, M.H. Key, J.A. King, K. Lancaster, D. Neely, A. Nikkro, P.A. Norreys, M.M. Notley, T.W. Philips, L. Romagnani, R.A. SnavelyR.B. Stephens, R.P.J. Town

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Abstract

Protons accelerated by a picosecond laser pulse have been used to radiograph a 500 mu m diameter capsule, imploded with 300 J of laser light in 6 symmetrically incident beams of wavelength 1.054 mu m and pulse length 1 ns. Point projection proton backlighting was used to characterize the density gradients at discrete times through the implosion. Asymmetries were diagnosed both during the early and stagnation stages of the implosion. Comparison with analytic scattering theory and simple Monte Carlo simulations were consistent with a 3 +/- 1 g/cm(3) core with diameter 85 +/- 10 mu m. Scaling simulations show that protons > 50 MeV are required to diagnose asymmetry in ignition scale conditions.
Original languageEnglish
Article number045001
Number of pages1
JournalPhysical Review Letters
Volume97
Issue number4
DOIs
Publication statusPublished - 28 Jul 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Mackinnon, A. J., Patel, P. K., Borghesi, M., Clarke, R. C., Freeman, R. R., Habara, H., Hatchett, S. P., Hey, D., Hicks, D. G., Kar, S., Key, M. H., King, J. A., Lancaster, K., Neely, D., Nikkro, A., Norreys, P. A., Notley, M. M., Philips, T. W., Romagnani, L., ... Town, R. P. J. (2006). Proton Radiography of a Laser-Driven Implosion. Physical Review Letters, 97(4), [045001]. https://doi.org/10.1103/PhysRevLett.97.045001