Introduction to Ionospheric Physics

• fiche de synthèse - matière : history
• fiche de synthèse - matière potentielle : plasma
• cours magistral
• fiche de synthèse - matière potentielle : summary•
• cours magistral - matière potentielle : goals
• fiche de synthèse - matière potentielle : scintillation
• fiche de synthèse - matière potentielle : ion production

1Introduction to Ionospheric Physics Adapted from a Lecture by Sigrid Close (LANL) Outline • Introduction– History of ionosphere– Ionospheric layers• Chapman Theory• Plasma Theory• Ionospheric Variability• Ionospheric effects - calibration techniques• Current Areas of Research• Summary History • On December 12, 1901, Marconi (a.k.a. “Father of Wireless”)received a signal in St. John's Newfoundland that had been sentfrom Cornwall, England (500 kHz): Nobel Prize in physics in1909 for using EM radiation for radio communication – Solution: Heaviside and Kennelyin 1902 proposed that aconducting layer existed in upperatmosphere that reflects EMsignals – Problem: EM radiation travels instraight lines and maximumdistance

• plasma frequency
• ionospheric variability•
• research• summary plasma
• atmosphere
• plasma
• neutral particles
• ion
• radiation
• density
• production