Pulsed electron beam propagation in argon and nitrogen gas mixture

Pulsed electron beam propagation in argon and nitrogen gas mixture

Pulsed Electron-Beam Heating

A pulsed, 20 kv electron beam is focussed upon a vapor-deposited thermocouple, and the resulting temperature vs. time response is studied. The experimental data show much scatter, but are consistent with the theoretical prediction that the characteristic thermal response time T is proportional to d , where d is the beam diameter at the thermocouple. From these data, for the soft-glass substrate...

Measurement of Cp/Cv for Argon, Nitrogen, Carbon Dioxide and an Argon + Nitrogen Mixture

The ratio of specific heats, γ, at constant pressure, Cp and constant volume, Cv, have been determined by measuring the oscillation frequency when a ball bearing undergoes simple harmonic motion due to the gravitational and pressure forces acting upon it. The γ value is an important gas property as it relates the microscopic properties of the molecules on a macroscopic scale. In this experiment...

Beam Induced Fluorescence Monitor - Spectroscopy in Nitrogen, Helium, Argon, Krypton and Xenon Gas

As conventional intercepting diagnostics will not withstand high intensity ion beams, Beam Induced Fluorescence (BIF) profile monitors constitute a preeminent alternative for non-intercepting profile measurements [1]. This diagnostic technique makes use of the optical fluorescence emission of beam-excited gases. Recently BIF became an important diagnostic tool for transversal beam profile measu...

Energy Transfer from Electron-beam Excited Argon to Nitrogen and Popop Dye Vapor

Since the first observation of electron-beam excited superradiant emission from the organic dye POPOP in the vapor phase buffered by high-pressure pure argon [1 ] , there has been considerable interest in developing this system into an efficient and powerful UV-visible tunable laser [2,3]. In order to establish optimum electron-beam excitation conditions for the organic dye vapor-buffer gas mix...