Concept

Spectromètre

Publications associées (80)

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Permanent modification in electrothermal atomic absorption spectrometry - advances, anticipations and reality

A review with 80 refs. Permanent modification is an important recent development in chem. modification techniques which is promising in view of increasing sample throughput with 'fast' programs, reducing reagent blanks, preliminary elimination of unwanted ...

2000

Gas spectrometry based on a pyroelectric thin film array

Nava Setter, Paul Muralt

We present a far infrared gas spectrometer which uses a thin film pyroelectric detector integrated on silicon. The detector is in-house fabricated and consists of 1 x 50 elements of sol-gel deposited, zirconium rich lead titanate (PZT) which are suspended ...

1999

Thin film pyroelectric array as a detector for an infrared gas spectrometer

Paul Muralt

We demonstrate the implementation of a thin film pyroelectric array as a detector in an infrared gas spectrometer. The 1 x 50 element array is integrated onto a silicon chip with a sol-gel deposited zirconium modified lead titanate film (PZT) as the pyroel ...

1998

Periodic operation applied to the kinetic study of CO2 methanation

Albert Renken

Periodic operation was applied to CO2 hydrogenation to CH4 at 383 K on 2% Ru/TiO2. A continuous feed recycle reactor combined with a diffuse reflectance IR cell and a mass spectrometer was used to follow simultaneously the gas phase CO2 and CH4 as well as ...

1994

Temperature-Dependent Pseudogap And Electron Localization In 1T-Tas2

Marco Grioni

Photoelectron spectroscopy reveals a striking correspondence between charge-density-wave-related phase transitions and modifications of the electronic structure in 1T-TaS2. High-energy-resolution spectra indicate that the collapse of the Fermi surface is a ...

1992

Mass-Spectrometric Detection of Low-Ppm Contaminants in Sputter Process Systems at 10-2 Mbar, Using a Directly Exposed Ion-Source

Paul Muralt

Trace contaminants in sputter atmospheres (10(-2) mbar Ar) are determined with a mass spectrometer whose ionizer is directly exposed to the process pressure, whereas the quadrupole filter is kept at high vacuum. The background limitations inherent to conve ...

1990

Compound clusters

Hans Georg Limberger

The cluster beam technique offers promise of becoming a useful tool for chemists in their search for new compounds. Using this technique elemental vapors can be made to react under controlled conditions to form units of condensed matter (clusters) small en ...

Springer-Verlag, Berlin, West Germany1988

Spectromètre pour l'étude des réactions (n, a) à 14 MeV

Jean-François Loude

A spectrometer has been constructed for the study of (n, α) reactions at 14 MeV, By detecting the 4He particle associated with neutron production, it is possible to measure the a time-of-flight in addition to the residual energy and energy loss, as measure ...

s.n.1971

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

Diffusion de neutrons de 14 MeV par le carbone 12

Claude Joseph

The angular distributions of the differential cross-sections for scattering of 14,1 MeV neutrons from 12C, Q = 0(0+); – 4,43(2+); – 7,65(0+) and – 9,63(8–) MeV, have been measured using a time-of-flight spectrometer. An indication can be found of the excit ...

s.n.1967