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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > spectral series line

spectral series line
subject			fact

spectral series line	has series limit
	has lower energy level
	has definition A spectral line belonging to a series of lines of a given atom arising from transitions with a common lower energy level.
	is a kind of spectral line
spectral line	has transition
	has equivalent width
spectral feature	has wavelength
	has width
	occurs in
	has species
radiation measurement	has unit radiation unit
number	has value

Kinds of spectral series line :

• Balmer line (4 kinds, 23 facts) - The series lies in the visible portion of the spectrum. (Deuterium Hα is 1.785 Å short-ward of hydrogen Hα)
• Brackett line (1 kind, 5 facts)
• ionized helium Balmer line (1 kind, 4 facts)
• ionized helium Lyman line (1 kind, 7 facts)
• ionized helium Paschen line (1 kind, 6 facts)
• Lyman line (2 kinds, 12 facts)
• Paschen line (1 kind, 7 facts)
• Pfund line (4 facts)
• Pickering line (2 kinds, 10 facts) (ionized helium Brackett line)