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arXiv · 1408.2978

Characterisation of deuterium spectra from laser driven multi-species sources by employing differentially filtered image plate detectors in Thomson spectrometers

A. Alejo·S. Kar·H. Ahmed·A. G. Krygier·D. Doria·R. Clarke·J. Fernandez·R. R. Freeman·J. Fuchs·A. Green·J. S. Green·D. Jung·A. Kleinschmidt·C. L. S. Lewis·J. T. Morrison·Z. Najmudin·H. Nakamura·G. Nersisyan·P. Norreys·M. Notley·M. Oliver·M. Roth·J. A. Ruiz·L. Vassura·M. Zepf·M. Borghesi
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Abstract

A novel method for characterising the full spectrum of deuteron ions emitted by laser driven multi-species ion sources is discussed. The procedure is based on using differential filtering over the detector of a Thompson parabola ion spectrometer, which enables discrimination of deuterium ions from heavier ion species with the same charge-to-mass ratio (such as C6+, O8+, etc.). Commonly used Fuji Image plates were used as detectors in the spectrometer, whose absolute response to deuterium ions over a wide range of energies was calibrated by using slotted CR-39 nuclear track detectors. A typical deuterium ion spectrum diagnosed in a recent experimental campaign is presented.

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A. Alejo, S. Kar, H. Ahmed, A. G. Krygier, D. Doria, R. Clarke, J. Fernandez, R. R. Freeman, J. Fuchs, A. Green, J. S. Green, D. Jung, A. Kleinschmidt, C. L. S. Lewis, J. T. Morrison, Z. Najmudin, H. Nakamura, G. Nersisyan, P. Norreys, M. Notley, M. Oliver, M. Roth, J. A. Ruiz, L. Vassura, M. Zepf, M. Borghesi. 2014-08-13. Characterisation of deuterium spectra from laser driven multi-species sources by employing differentially filtered image plate detectors in Thomson spectrometers. https://doi.org/10.1063/1.4893780

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