Wedge-Shaped Reflector of Ions and Ion-Optical Features

Сысоев, А. А.; Spakhov, A.V.

doi:10.1016/j.phpro.2015.09.063

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Technical approaches to the construction of new laser TOF analyzer ion-optical scheme can be formulated. 62 The main standpoints of the approach were the following: the integration of the ion source into the analyzer (mass separation of ions occurs during the plasma transport); the rejection of ions acceleration in the source and transporting ions into the analyzer with a native velocity obtained in a laser plasma; the radical extension of the energy window; the use of self-consistent energy windows of the analyzer with the scanning mass spectra by energy; 63 the online mass calibration of each single transient before summing them in the process of accumulation. …”

Section: Methodsmentioning

confidence: 99%

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Novel approach to constructing laser ionization elemental time-of-flight mass spectrometer

Карпов

Milyaeva

Сысоев

2017

Eur J Mass Spectrom (Chichester)

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The main advantages of laser sampling are associated with following features: sample preparations as well as consumables are not needed, low risk of sample contamination, good spatial resolution. In mass spectrometry, high laser irradiance can be used for both ablation and ionization processes. The method is especially profitable in time-of-flight mass spectrometry. A new principle of constructing laser ionization time-of-flight mass spectrometer based on wedge-shaped ion mirrors and the absence of electrostatic ion acceleration before mass analysis is discussed. Among advantages of the analyzer there are ability to provide temporal focusing of ions in a wide energy range (±20%), compactness of the analyzer, and minimization of the requirements for power supplies. The approach is expected to be profitable for standardless elemental analysis of solid samples, which should be possible at laser irradiation power density more than 3 × 10W/cm that ensures complete ionization of all elements in a laser plasma. The analytical signal of each element is formed as the sum of the signals for all charge states and the energy scan of the mass spectra is provided.

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Section: Methodsmentioning

confidence: 99%

“…Technical approaches to the construction of new laser TOF analyzer ion-optical scheme can be formulated. 62 The main standpoints of the approach were the following:…”

Section: Contribution Of Ions Energy Spreadmentioning

confidence: 99%

Novel approach to constructing laser ionization elemental time-of-flight mass spectrometer

Карпов

Milyaeva

Сысоев

2017

Eur J Mass Spectrom (Chichester)

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“…The main factors affecting the resolution are the time aberrations by the energy spread, the initial divergence angles and the initial coordinate spread of ions. 14 In simulation, 64 Cu + ions were used. Similar to Reference 14, the simulation was performed with average ion energy W 0 = 50 eV, because at this energy the negative effect of the energy spread is the strongest.…”

Section: Selection and Optimization Of The Wedge-shaped Mirrormentioning

confidence: 99%

Compact Analyzer for a Laser Time-of-Flight Mass Spectrometer

Карпов

Spakhov

Сысоев

2015

Eur J Mass Spectrom (Chichester)

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Aspects of a new type of laser time-of-flight mass spectrometer are described in this letter. It is based on a wedge-shaped reflecting mirror and is used as an ion analyzer. The analyzer provides time focusing by both energy and a divergence angle of ions. Time focusing of good quality is acquired in the energy range of ±20% of the average ion energy, which is, at least, two times wider than the energy range of the known ion optical systems for similar applications. The mass resolution of the analyzer is ~600, while overall dimensions are very small (10 × 10 × 5 cm).

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