Development of Molecular Concentration Mapping Techniques Using MeV Focussed Ion Beams

Closed for proposals

Project Type

Coordinated Research Project

Project Code

F11019

CRP

2030

Approved Date

06.12.2013

Status

3 - Active - Ongoing

Start Date

04.04.2014

Expected End Date

04.04.2018

Completed Date

11.12.2019

Participating Countries

Argentina
Australia
Brazil
Croatia
Finland
Italy
Japan
Portugal
Slovenia
South Africa
Spain
Switzerland
Syrian Arab Republic
Thailand
United Kingdom of Great Britain and Northern Ireland

Description

Secondary ion mass spectrometry (SIMS) has developed over the years into a powerful analytical tool for elemental analysis. Over the past 40 years these techniques have been utilized to make molecular concentration maps of surfaces and even to provide full 3D maps of molecular materials. Conventionally low energy atomic and cluster ions (keV) are used to physically sputter the materials from the surface. Recently it has been demonstrated that the SIMS technique is also possible to achieve using higher energy MeV ions and unlike the keV ions the MeV ions also yield a PIXE signal and can be extracted into air, providing a completely new working regime for the SIMS analysis technique. Development of this new MeV-SIMS technique for molecular concentration mapping in combination with Ion Beam Analysis - especially the PIXE technique- for elemental analysis is the target of this CRP; perspective applications are foreseen in the field of art, archaeology, materials science, organic electronics, forensics, geology, bio-medical science etc.

Specific objectives

An improved understanding of the stopping of heavy ions and their interaction with the electronic system, and the production of characteristic X-rays and particle ejection

Exploration of the applications of the improved analytical capabilities, providing, for example, and not limited to, analysis of molecular binders in art objects to aid provenancing, and optimizing manufacturing processes.

Improved analytical capabilities of accelerator-based ion beam techniques, in particular for high resolution imaging of molecular concentrations of complex samples

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