摘要:
Une lampe à décharge luminescente est munie d'un corps de chambre possédant une ou plusieurs ouvertures d'admission et d'aspiration sous vide du gaz, ledit corps de chambre étant réalisé dans un matériau isolant et comportant un espace pour le gaz s'étendant en direction de l'anode et limité latéralement par la paroi interne du corps de chambre. La lampe comprend également une éprouvette disposée au niveau de l'extrémité cathodique du corps de chambre, ainsi qu'une anode logée dans le corps de chambre. L'éprouvette est de préférence maintenue au potentiel zéro et ladite anode comportant une ouverture de passage est de préférence maintenue sous haute tension. L'anode est également pourvue d'un élément de fermeture situé à l'extrémité du corps de chambre et conçu éventuellement comme une fenêtre d'observation, au moins une ouverture de regard (18) étant disposée latéralement dans le corps de chambre (4), à environ la hauteur de la lueur de décharge négative, une fermeture hermétique de l'espace intérieur destinée au gaz au niveau de l'extrémité cathodique étant assurée par l'éprouvette (2).
摘要:
Ein Verfahren zur Untergrundbestimmung und- Korrektur von breitbandigem Untergrund, ist gekennzeichnet durch die Schritte: Glätten der aufgenommenen Spektralkurve; Bestimmen aller Werte der ursprünglichen Kurve, deren Wert über dem Wert der geglätteten Kurve liegt, und Reduzierung dieser Werte auf den Wert der geglätteten Kurve; wenigstens zweifaches Wiederholen der Schritte und Subtraktion der auf diese Weise erhaltenen Untergrundkurve von der ursprünglichen Kurve. Das Glätten der Kurve kann mittels Moving Average erfolgen. Die Breite des Moving Average kann das Doppelte einer durchschnittlichen Linienbreite einer Referenzlinie betragen.
摘要:
During an inventive laser ablation ICP-MS analysis method, solid matter samples (39) are examined in a frozen initial state. To this end, the sample chamber (2) as well as the carrier gas stream (12), which transports the ablated sample particles into the plasma (ICP-MS), are cooled to low temperatures (TK). The physical conservation, especially of ice samples (3), results in obtaining a particularly high local resolution and thus a high time resolution since their annual layers often remain preserved. An advantageous device (1) is provided with an insulated chamber (2) that can be cooled and with a simple circulating cooling device (17). The laser ablation analysis method can be used for all freezable sample materials used in mass spectrometry.
摘要:
The invention concerns a method of monitoring the quality of filler gases, in particular sulphur hexafluoride (SF6), in gas-filled installations, in particular gas-insulated switchgear such as high- and medium-voltage switches. The aim of the invention is to propose a method which makes continuous monitoring of filler-gas quality possible, at the same time making it possible to locate any fault and determine the type of fault in the installation. This is achieved by virtue of the fact that the filler gas is continuously exchanged, at least for the time taken to carry out the analysis, between the installation and an ion-mobility spectrometer in which the filler gas is ionized and the ions thus formed are analysed in the drift channel of the spectrometer.
摘要:
A glow discharge lamp with a chamber body having one or several gas inlet and evacuation openings, said chamber body being of insulating material with a gas space extending in the direction of the anode and limited laterally by the inner wall of the chamber body. The lamp also comprises a testpiece arranged at the cathode end of the chamber body and an anode housed in the chamber body. The testpiece is preferably maintained at a zero potential and the anode housed in the chamber body and having a through passage is preferably maintained at a high voltage. The lamp is also provided with a closure piece at the end of the chamber body designed, if desired, as an observation window, whereby at least one window opening (18) is arranged lateraly in the chamber body (4), at about the height of the negative glow light, and a sealing closure for the inner gas space at the cathode end is provided by the testpiece (2).
摘要:
Ein Verfahren zur Untergrundbestimmung und- Korrektur von breitbandigem Untergrund, ist gekennzeichnet durch die Schritte: Glätten der aufgenommenen Spektralkurve; Bestimmen aller Werte der ursprünglichen Kurve, deren Wert über dem Wert der geglätteten Kurve liegt, und Reduzierung dieser Werte auf den Wert der geglätteten Kurve; wenigstens zweifaches Wiederholen der Schritte und Subtraktion der auf diese Weise erhaltenen Untergrundkurve von der ursprünglichen Kurve. Das Glätten der Kurve kann mittels Moving Average erfolgen. Die Breite des Moving Average kann das Doppelte einer durchschnittlichen Linienbreite einer Referenzlinie betragen.
摘要:
During an inventive laser ablation ICP-MS analysis method, solid matter samples (39) are examined in a frozen initial state. To this end, the sample chamber (2) as well as the carrier gas stream (12), which transports the ablated sample particles into the plasma (ICP-MS), are cooled to low temperatures (TK). The physical conservation, especially of ice samples (3), results in obtaining a particularly high local resolution and thus a high time resolution since their annual layers often remain preserved. An advantageous device (1) is provided with an insulated chamber (2) that can be cooled and with a simple circulating cooling device (17). The laser ablation analysis method can be used for all freezable sample materials used in mass spectrometry.
摘要:
The invention concerns a method of monitoring the quality of filler gases, in particular sulphur hexafluoride (SF6), in gas-filled installations, in particular gas-insulated switchgear such as high- and medium-voltage switches. The aim of the invention is to propose a method which makes continuous monitoring of filler-gas quality possible, at the same time making it possible to locate any fault and determine the type of fault in the installation. This is achieved by virtue of the fact that the filler gas is continuously exchanged, at least for the time taken to carry out the analysis, between the installation and an ion-mobility spectrometer in which the filler gas is ionized and the ions thus formed are analysed in the drift channel of the spectrometer.