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In this paper, we introduce a simple to manufacture, emission current controlled, miniaturized non-radioactive electron source to provide free electrons at atmospheric pressure. In atmospheric pressure chemical ionization as usually used in ion mobility spectrometry radioactive beta minus sources provide free electrons with high kinetic energy to initiate a chemical gas phase ionization of the analytes...
In atmospheric pressure chemical ionization as usually used in ion mobility spectrometry radioactive beta minus sources provide free electrons with high kinetic energy to initiate a chemical gas phase ionization of the analytes. In this paper we present a simple to manufacture miniaturized non-radioactive electron source to provide the free electrons at atmospheric pressure. Therefore, we generate...
Ion mobility spectrometry (IMS) is a well-known method for detecting hazardous compounds in air. Detection limits in the very low ppb range and fast response times of just a few seconds make this technique more and more popular. Typical applications are the detection of chemical warfare agents, toxic industrial compounds, explosives and drugs. This paper describes the concept and preliminary results...
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