A gated Thomson parabola spectrometer for improved ion and neutral atom measurements in intense laser produced plasmas.

Autor:	Tata S; Tata Institute of Fundamental Research, Mumbai 400 005, India., Mondal A; Tata Institute of Fundamental Research, Mumbai 400 005, India., Sarkar S; Tata Institute of Fundamental Research, Mumbai 400 005, India., Lad AD; Tata Institute of Fundamental Research, Mumbai 400 005, India., Krishnamurthy M; Tata Institute of Fundamental Research, Mumbai 400 005, India.
Jazyk:	angličtina
Zdroj:	The Review of scientific instruments [Rev Sci Instrum] 2017 Aug; Vol. 88 (8), pp. 083305.
DOI:	10.1063/1.4998685
Abstrakt:	Ions of high energy and high charge are accelerated from compact intense laser produced plasmas and are routinely analysed either by time of flight or Thomson parabola spectrometry. At the highest intensities where ion energies can be substantially large, both these techniques have limitations. Strong electromagnetic pulse noise jeopardises the arrival time measurement, and a bright central spot in the Thomson parabola spectrometer affects the signal to noise ratio of ion traces that approach close to the central spot. We present a gated Thomson parabola spectrometer that addresses these issues and provides an elegant method to improvise ion spectrometry. In addition, we demonstrate that this method provides the ability to detect and measure high energy neutral atoms that are invariably present in most intense laser plasma acceleration experiments.
Databáze:	MEDLINE
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