Process diagnostics through measurement of neutral molecules in low-temperature plasmas.

Low-order modes as diagnostics of spheroidal non-neutral plasmas.

Many experiments requiring the confinement of charged particles have been performed in Penning traps. High-precision measurements of magnetic moments of fundamental particles [1) have been made, and atomic spectroscopy in an isolated trap environment is of potential use for the next generation of atomic clocks [2]. Similar traps are employed in ion cyclotron mass spectrometry [3], and for exper...

Low-temperature atom formation in ultracold neutral plasmas

Laser Thomson Scattering Measurement to Diagnose the Low Temperature Plasmas

This paper describes how to measure the plasma temperature and density using laser Thomson scattering signal. Electron energy probability functions (EEPFs) having a fine resolution of electron energy were measured in low-pressure inductively coupled plasma with laser Thomson scattering method (LTS) at various plasma conditions (rf powers and gas pressures) and compared with the EEPFs measured b...

"Ultracold" neutral plasmas at room temperature.

We report a measurement of the electron temperature in a plasma generated by a high-intensity laser focused into a jet of neon. The 15 eV electron temperature is determined using an analytic solution of the plasma equations assuming local thermodynamic equilibrium, initially developed for ultracold neutral plasmas. We show that this analysis method accurately reproduces more sophisticated plasm...

Simultaneous temperature and density diagnostics of optically thin plasmas

Amethod is given for performing simultaneous temperature and density diagnostics of an optically thin plasma by means of all the available observations of lines of the same ions. The density and differential emission measure at selected temperatures may be measured and the chemical composition verified. Themethod is applied to line emissionmeasured bySERTS 89 for an active region of the solar c...