Measurements of EEDF in recombination dominated afterglow plasma
نویسندگان
چکیده
منابع مشابه
Influence of Long- ived Species on EEDF in Afterglow Plasma
Experimental studies of Electron Energy Distribution Function (EEDF) in well-defined conditions in Flowing Afterglow plasma using Langmuir probe are reported. EEDF was measured in pure helium at medium pressures (1600 Pa) during late afterglow (35 to 95 ms after discharge) in nearly relaxed thermal plasma (Te ~ 300–600 K). The influence of fast electrons produced in interactions of helium metas...
متن کاملTime-resolved measurements of the EEDF in a helicon plasma
An energy analyzer with the capability of making fast time-resolved measurements of the instantaneous electron current in a radiofrequency plasma has been designed and constructed. This current is then reconstructed into the instantaneous I-V characteristic at opposite phases of the RF cycle. Results are shown for the helicon wave discharge under various conditions. From the first derivative of...
متن کاملEEDF MEASUREMENTS AND EXCITATION PROCESSES IN THE VICINITY OF A HELIUM DISCHARGE CONSTRICTION
Axial distributions of plasma and floating potentials, electron number density and the electron energy distribution function (EEDF) have been measured in the double layer (DL) region of an He discharge constriction. Excitation processes in the constriction region are studied. Using a linearization method for the nonstationary balance equations and choosing appropriate discharge conditions, ...
متن کاملFlowing Afterglow Study of Pressure Dependence of Recombination in Helium-Hydrogen Plasma
Recombination of H3 ions with electrons was studied in Flowing Afterglow (FALP) experiment at T = 250 K and buffer gas pressure 1500–1600 Pa. In the experiment dependence of effective recombination rate coefficient (αeff) on He pressure and on partial pressure of hydrogen has been observed. The observed pressure dependences indicate that the recombination process in H3 dominated plasma can at h...
متن کاملDirect femtosecond measurements of single collision dominated geminate recombination times of small molecules in liquids
We report the femtosecond transient absorption spectra of the CHJ photoproduct of the methylene iodide (CH&) photodissociation. The results indicate a disappearance of this photofragment on a z 350 fs time scale in several different solvents. The implication is that in these simple liquids, methylene iodide is undergoing geminate recombination. Recombination yields, but not rates are shown to b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2009
ISSN: 1742-6596
DOI: 10.1088/1742-6596/192/1/012023