Polarization dependence of resonant multiphoton ionization in atomic mercury

1984 ◽  
Vol 62 (5) ◽  
pp. 419-430
Author(s):  
F. W. Dalby ◽  
M. H. L. Pryce ◽  
J. H. Sanders
Keyword(s):  
Excited States ◽  
Cross Sections ◽  
Multiphoton Ionization ◽  
Polarization Dependence ◽  
Ionization Cross ◽  
Polarization Dependences ◽  
Ionization Cross Sections ◽  
Theory And Experiment ◽  
Atomic Mercury ◽  
Good Agreement

The polarization dependences of a number of resonant multiphoton ionizations in atomic Hg have been studied experimentally and theoretically. Good agreement between theory and experiment is found from which quantitive information about relative ionization cross sections from excited states has been deduced.

EXCITATION AND IONIZATION CROSS SECTIONS FOR HE I FROM NORMALIZED BORN AND K-MATRIX CALCULATIONS: ΔS = 0 TRANSITIONS FROM n = 2, 3 EXCITED STATES

2000 ◽  
Vol 74 (1) ◽  
pp. 123-153 ◽  
Author(s):  
I.L. Beigman ◽  
L.A. Vainshtein ◽  
M. Brix ◽  
A. Pospieszczyk ◽  
I. Bray ◽  
...  
Keyword(s):  
Excited States ◽  
Cross Sections ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
K Matrix

scholarly journals Electron-impact double ionization of the carbon atom

2018 ◽  
Vol 620 ◽  
pp. A188 ◽  
Author(s):  
Valdas Jonauskas
Keyword(s):  
Carbon Atom ◽  
Electron Impact ◽  
Cross Sections ◽  
Double Ionization ◽  
Impact Excitation ◽  
Rate Coefficients ◽  
Electron Impact Excitation ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Good Agreement

Electron-impact single- and double-ionization cross sections and Maxwellian rate coefficients are presented for the carbon atom. Scaling factors are introduced for the electron-impact excitation and ionization cross sections obtained in the distorted wave (DW) approximation. It is shown that the scaled DW cross sections provide good agreement with measurements for the single ionization of the C atom and C1+ ion. The direct double-ionization (DDI) process is studied using a multi-step approach. Ionization–ionization, excitation–ionization–ionization, and ionization–excitation–ionization branches are analyzed. It is demonstrated that the three-step processes contribute ≼40% of the total DDI cross sections for the case where one of the electrons takes all of the excess energy after the first ionization process.

scholarly journals The Electron Impact Ionization Cross Sections of Methanol, Ethanol and 1-Propanol

Atoms ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 60 ◽  
Author(s):  
Yogesh Kumar ◽  
Manoj Kumar ◽  
Sachin Kumar ◽  
Rajeev Kumar
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Impact Ionization ◽  
Experimental Results ◽  
Oscillator Strengths ◽  
Ionization Cross ◽  
Total Ionization ◽  
Plane Wave Born Approximation ◽  
Ionization Cross Sections ◽  
Good Agreement

In the present investigation, the plane-wave Born approximation was employed to calculate the total ionization cross sections by electron impact of methanol, ethanol and 1-propanol from the threshold of ionization to 10 MeV. This method requires continuum generalized oscillator strengths (CGOSs). The two different semi-phenomenological expressions of CGOS, given by Mayol and Salvat and Weizsacker and Williams, along with approximated form of the continuum optical oscillator strength (COOS) by Khare et al. were used. Furthermore, the average of the above two CGOSs was also used. The calculated ionization cross sections were compared to the available previous theoretical results and experimental data. Out of three CGOSs, the present results with the average CGOS were found in good agreement with the available experimental results for all the considered molecules. Collision parameters CRP were also calculated from 0.1 to 100 MeV and the calculations were found to be in excellent agreement with the experimental results of Reike and Prepejchal.

scholarly journals Generalized multiphoton-ionization cross sections of the rare gases for 500-fs, 248.6-nm pulses

1998 ◽  
Vol 57 (1) ◽  
pp. 392-400 ◽  
Author(s):  
C. J. G. J. Uiterwaal ◽  
D. Xenakis ◽  
D. Charalambidis ◽  
P. Maragakis ◽  
H. Schröder ◽  
...  
Keyword(s):  
Cross Sections ◽  
Multiphoton Ionization ◽  
Rare Gases ◽  
Ionization Cross ◽  
Ionization Cross Sections

Electron Impact Ionization Cross Sections of N2 and O2

1975 ◽  
Vol 53 (11) ◽  
pp. 1044-1046 ◽  
Author(s):  
Suresh Chandra ◽  
Udit Narain
Keyword(s):  
Experimental Data ◽  
Energy Range ◽  
Electron Impact ◽  
Cross Sections ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Ionization Cross ◽  
Ionization Cross Sections ◽  
Good Agreement

The ionization cross sections of N2 and O2 have been calculated in the energy range from threshold to 20 keV using a modified approach. The results are in good agreement with the available experimental data.

Direct Measurements of Multiphoton Ionization Cross-Sections in Various Gases

2018 ◽  
Author(s):  
Animesh Sharma ◽  
Mikhail Slipchenko ◽  
Mikhail N. Shneider ◽  
Kazi Arafat Rahman ◽  
Alexey Shashurin
Keyword(s):  
Cross Sections ◽  
Multiphoton Ionization ◽  
Ionization Cross ◽  
Direct Measurements ◽  
Ionization Cross Sections

Application of harmonie radiation generated in a gas jet : Measurement of ionization cross sections of excited states of helium

1999 ◽  
Author(s):  
D. Descamps ◽  
M. Gisselbrecht ◽  
A. L’Huillier ◽  
C. Lyngå ◽  
M. Meyer ◽  
...  
Keyword(s):  
Excited States ◽  
Cross Sections ◽  
Gas Jet ◽  
Ionization Cross ◽  
Ionization Cross Sections
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