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A new horizon in secondary neutral mass spectrometry

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Date

2004-06-15

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Abstract

A new time-of-flight (TOF) mass spectrometer incorporating post-ionization of sputtered neutral species with tunable vacuum ultraviolet (VUV) light generated by a free electron laser (FEL) has been developed. Capabilities of this instrument, called SPIRIT, were demonstrated by experiments with photoionization of sputtered neutral gold atoms with 125nm light generated by the VUV FEL located at Argonne National Laboratory (ANL). In a separate series of experiments with a fixed wavelength VUV light source, a 157nm F 2 laser, a useful yield (atoms detected per atoms sputtered) of about 12% and a mass resolution better than 1500 were demonstrated for molybdenum.

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Keywords

Free electron laser, Laser desorption, Photoionization of atoms and molecules, Secondary neutral mass spectrometry

Citation

URI

https://dspace-test.anu.edu.au/handle/1885/733758521

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DevOps Pure Testing

Source

Applied Surface Science

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Article

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DOI

10.1016/j.apsusc.2004.03.191

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