Concept

Mass-to-charge ratio

Related publications (67)

Space charge effects as a source of electron energy spread and efficiency degradation in gyrotrons

Space charge effects (so-called negative-mass instability) as the reason for electron energy spread developing in the region of the electron drift between the cathode and the cavity of a gyrotron are discussed. The quasioptical gyrotron working at third ha ...

2000

Silicon oxide particle formation in RF plasmas investigated by infrared absorption spectroscopy and mass spectrometry

Christoph Hollenstein, Alan Howling

In situ Fourier transform infrared absorption spectroscopy has been used to study the composition of particles formed and suspended in radio-frequency discharges of silane-oxygen-argon gas mixtures. The silane gas constumption was observed by infrared abso ...

1998

Palladium release in electrothermal atomic absorption spectrometry

The absorbance signal in electrothermal at. absorption spectrometry is a result of the processes of atom formation and dissipation and 1st of all depends on the initial generation of atoms from the surface. The rising part of the absorbance time profiles c ...

1997

Preparation of YBCO thin films by a four ion beam co-deposition system

Davor Pavuna, Sebastian Michel

We present preliminary results for thin films grown with a recently commissioned ion beam codeposition system designed for in situ growth and etching of YBCO films. The apparatus consists of a high-vacuum chamber (10-7 Torr) equipped with four Kaufmann ion ...

1989

Broad-band two-dimensional Fourier transform ion cyclotron resonance

Geoffrey Bodenhausen

Two-dimensional (2D) Fourier transform ion cyclotron resonance (2D FT-ICR) allows one to obtain direct evidence for the occurrence of ion-mol. reactions. In 2D FT-ICR spectra, one observes resonances with 2 distinct frequency coordinates w1 and w2 that cor ...

1988

Determination of oxygen content in MBE AlGaAs layers

Marc Ilegems, Marcel Py

Quantitative Secondary Ion Mass Spectrometry (SIMS) determination of oxygen incorporation in epitaxial AlGaAs/GaAs layers is strongly affected by the presence of oxygen adsorbed on the surface. By flooding the sample with oxygen isotope O18 during the anal ...

1988

Développement d'un spectromètre de masse à balayage rapide et son application à la photodésorption

A new mass spectrometer of the omegatron type has been designed and tested. This new device, which we have called the resotron, combines the extremely low permanent outgassing and pumping rates of the omegatron (less than 10-11 torr liter/sec. and 10-3 lit ...

s.n.1971

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