Isogenous
Encyclopedia
Isogenous is a term occasionally used in spectroscopy
that denotes when two or more spectroscopic series of transition from a common state. The word was first used in this context in T.J. Stone & R.F. Barrow Laser excited fluorescence spectra of gaseous
, Canadian Journal of Physics. Vol. 53, p. 1976, October 1975. In this case, an excited state of gaseous 
was pumped by an Argon ion laser
; the excited state then relaxed to two closely separated low lying states giving two series of emission lines with a common origin.
Spectroscopy
Spectroscopy is the study of the interaction between matter and radiated energy. Historically, spectroscopy originated through the study of visible light dispersed according to its wavelength, e.g., by a prism. Later the concept was expanded greatly to comprise any interaction with radiative...
that denotes when two or more spectroscopic series of transition from a common state. The word was first used in this context in T.J. Stone & R.F. Barrow Laser excited fluorescence spectra of gaseous
, Canadian Journal of Physics. Vol. 53, p. 1976, October 1975. In this case, an excited state of gaseous was pumped by an Argon ion laserIon laser
An ion laser is a gas laser which uses an ionized gas as its lasing medium.Like other gas lasers, ion lasers feature a sealed cavity containing the laser medium and mirrors forming a Fabry–Pérot resonator. Unlike HeNe lasers, the energy level transitions that contribute to laser action come from ions...
; the excited state then relaxed to two closely separated low lying states giving two series of emission lines with a common origin.