A nearly real-time high temperature laser-plasma diagnostic using photonuclear reactions in tantalum

I. Spencer, K. W. D. Ledingham, R. P. Singhal, T. McCanny, P. McKenna, E. L. Clark, K. Krushelnick, M. Zepf, F. N. Beg, M. Tatarakis, A. E. Dangor, R. D. Edwards, M. A. Sinclair, P. A. Norreys, R. J. Clarke, R. M. Allott

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Abstract

A method of measuring the temperature of the fast electrons produced in ultraintense laser–plasma interactions is described by inducing photonuclear reactions, in particular (γ,n) and (γ,3n) reactions in tantalum. Analysis of the γ rays emitted by the daughter nuclei of these reactions using a germanium counter enables a relatively straightforward near real-time temperature measurement to be made. This is especially important for high temperature plasmas where alternative diagnostic techniques are usually difficult and time consuming. This technique can be used while other experiments are being conducted.
Original languageEnglish
Pages (from-to)3801-3805
Number of pages5
JournalReview of Scientific Instruments
Volume73
Issue number11
Early online date25 Oct 2002
DOIs
Publication statusPublished - 30 Nov 2002

Keywords

  • laser-plasma interactions
  • photonuclear reactions
  • high temperature plasmas
  • diagnostic techniques

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    Spencer, I., Ledingham, K. W. D., Singhal, R. P., McCanny, T., McKenna, P., Clark, E. L., Krushelnick, K., Zepf, M., Beg, F. N., Tatarakis, M., Dangor, A. E., Edwards, R. D., Sinclair, M. A., Norreys, P. A., Clarke, R. J., & Allott, R. M. (2002). A nearly real-time high temperature laser-plasma diagnostic using photonuclear reactions in tantalum. Review of Scientific Instruments, 73(11), 3801-3805. https://doi.org/10.1063/1.1511802