(2) 多普勒变宽(Doppler broadening) 是由于原子在空间作无规则热运动所引起的，又称为热变 宽。 DETECTOR V V n0 n0 -Dn n0 + Dn V is luminophor’s motion direction
(2) 多普勒变宽(Doppler broadening) 是由于原子在空间作无规则热运动所引起的，又称为热变 宽。 DETECTOR V V n0 n0 -Dn n0 + Dn V is luminophor’s motion direction
Observer Observer
Observer Observer
Doppler broadening of spectral line is given by Where n0 is central frequency of the spectral line, M is relative atomic mass (atomic weight) of absorbing particle (eq.8-2)
Doppler broadening of spectral line is given by Where n0 is central frequency of the spectral line, M is relative atomic mass (atomic weight) of absorbing particle (eq.8-2)
Doppler broadening During atomization/ionization,our species may move towards or away from the detector. This will result in a Doppler shift in the resulting line. Spectral lines that should be about 1-5nm can end up being 100 times wider. There is not much you can do about it except recognize that is occurs
(3) 压力变宽 光
(3) 压力变宽 光