A time-dependent theory of resonant multiphoton ionization of atoms by short pulses. II. Strong field results for the two-photon ionization of caesium

1995 ◽  
Vol 28 (23) ◽  
pp. 5077-5091 ◽  
Author(s):  
A Adler ◽  
A Rachman ◽  
E J Robinson
Keyword(s):  
Strong Field ◽  
Multiphoton Ionization ◽  
Time Dependent ◽  
Short Pulses ◽  
Two Photon ◽  
Dependent Theory ◽  
Photon Ionization

Detection of Atmospheric Pollutant NO With the Method of Resonant-Enhanced Multiphoton Ionization

2012 ◽  
Vol 209-211 ◽  
pp. 1596-1599
Author(s):  
Gui Yin Zhang ◽  
Yi Dong Jin ◽  
Hai Ming Zheng
Keyword(s):  
Decay Curve ◽  
Resonant State ◽  
Multiphoton Ionization ◽  
Photon Absorption ◽  
Ionization Cross ◽  
Atmospheric Pollutant ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photon Ionization ◽  
Key Substances

NO is one of the key substances of air pollution. This paper presents the use of the technique of resonant enhanced multi-photon ionization (REMPI) for NO ambient detection. NO is ionized by absorbing four photons and via A2Σ intermediate resonant state when use 452.4nm laser as radiation source. A physical model concerning the ionization process is presented. It is shown that the ion signal depends on laser character and the dynamic parameters of NO. Two-photon absorption and ionization cross section about the resonant state are obtained from the ion decay curve and the model. The detection limit of this work, which can reach 1.4 ppm, is determined by measuring the variation of the ion signal with the concentration of NO.

Two-photon ionization of lithium in the time-dependent Hartree-Fock approximation

1993 ◽  
Vol 47 (6) ◽  
pp. 4982-4985 ◽  
Author(s):  
M. S. Pindzola ◽  
T. W. Gorczyca ◽  
C. Bottcher
Keyword(s):  
Time Dependent ◽  
Hartree Fock ◽  
Two Photon ◽  
Photon Ionization
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