Generation of I atoms for oxygen-iodine lasers using RF discharge dissociation of various I donors

0354944 - FZÚ 2011 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Jirásek, Vít - Schmiedberger, Josef - Čenský, Miroslav - Kodymová, Jarmila
Generation of I atoms for oxygen-iodine lasers using RF discharge dissociation of various I donors.
Proceedings of 40th AIAA Plasmadynamics and Lasers Conference. Reston: AIAA, 2009, 4064/1-4064/9. ISBN 978-1-56347-975-5.
[AIAA Plasmadynamics and Lasers Conference /40./. San Antonio (US), 22.06.2009-25.06.2009]
Grant CEP: GA ČR GA202/09/0310
Grant ostatní: US Air Force EOARD(US) FA8655-09-1-3092
Výzkumný záměr: CEZ:AV0Z10100523
Klíčová slova: plazmachemistry * atomic iodine * radiofrequency discharge * COIL * DOIL
Kód oboru RIV: BH - Optika, masery a lasery

Dissociation of CH3I and CF3I in RF discharge for use in oxygen-iodine lasers was studied experimentally. A discharge chamber was placed directly inside an iodine injector and produced I atoms were injected to the supersonic cavity. A dissociation fraction up to 20% was achieved at RF power up to 250 W and flow rates of iodide up to 1 mmol/s. The discharge efficiency was up to 11%. The modeling calculations showed that the dissociation fraction in the discharge could be higher than evaluated in the detection cavity due to the recombination of I atoms and/or presence of excited iodine atoms. The number density up to 2.5 x 1014 cm-3 of I atoms was measured in the supersonic flow.
Trvalý link: http://hdl.handle.net/11104/0193833