Document Details

Document Type : Article In Journal 
Document Title :
Kinetics of plasma formation in sodium vapor excited by nanosecond resonant laser pulses
Kinetics of plasma formation in sodium vapor excited by nanosecond resonant laser pulses
 
Subject : physics 
Document Language : English 
Abstract : We have studied theoretically formation of molecular ion Na-2 (+) and the atomic ion Na+ which are created in laser excited sodium vapor at the first resonance transition, 3S(1/2)-3P(1/2). A set of rate equations, which describe the temporal variation of the electron energy distribution function (EEDF), the electron density, the population density of the excited states as well as the atomic Na+ and molecular ion Na-2 (+), are solved numerically. The calculations are carried out at different laser energy and different sodium atomic vapor densities. The numerical calculations of the EEDF show that a deviation from the Maxwellian distribution due to the superelastic collisions effect. In addition to the competition between associative ionization (3P-3P), associative ionization (3P-3D) and Molnar-Hornbeck ionization processes for producing Na-2 (+), the calculations have also shown that the atomic ions Na+ are formed through the Penning ionization and photoionization processes. These results are found to be consistent with the experimental observations. 
ISSN : 0973-1458 
Journal Name : INDIAN JOURNAL OF PHYSICS 
Volume : 86 
Issue Number : 7 
Publishing Year : 1433 AH
2012 AD 
Article Type : Article 
Added Date : Tuesday, July 25, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
M. A MahmoudMahmoud, M. A InvestigatorDoctoratehameideg@yahoo.com
Y. E. E GamalGamal, Y. E. E ResearcherDoctorate 

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