Abstract

A space-resolved charge density of ions is derived from a time-resolved current of ions emitted from laser-produced plasma and expanded into the vacuum along collision-free and field-free paths. This derivation is based on a similarity relationship for ion currents with “frozen” charges observed at different distances from the target. This relationship makes it possible to determine a map of ion charge density at selected times after the laser plasma interaction from signals of time-of-flight detectors positioned at a certain distance from the target around a target-surface normal. In this work, we present maps of the charge density of ions emitted from Cu and polyethylene plasmas. The mapping demonstrates that bursts of ions are emitted at various ejection angles fn with respect to the target-surface normal. There are two basic directions f1 and f2, one belonging to the fastest ions, i.e., protons and carbon ions, and the other one to the slowest ions being a part of each plasma plume.

Autore Pugliese

• Nassisi Vincenzo

Tutti gli autori

• J. KRÁSA , P. PARYS , L. VELARDI , A. VELYHAN , L. RYC , D. DELLE SIDE , V. NASSISI

Titolo volume/Rivista

LASER AND PARTICLE BEAMS

Anno di pubblicazione

2014

ISSN

0263-0346

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile