Ionization Potentials and the Structures of the Photo-ionization Yield Curves of Ethylene and its Halogenoderivatives

Nature ◽  
1963 ◽  
Vol 199 (4899) ◽  
pp. 1179-1180 ◽  
Author(s):  
J. MOMIGNY
Keyword(s):  
Ionization Potentials ◽  
Yield Curves ◽  
Ionization Yield ◽  
Photo Ionization

IONIZATION PROBABILITY CURVES USING AN ELECTRON SELECTOR: RESULTS ON N2+, N+, Xe++

1954 ◽  
Vol 32 (12) ◽  
pp. 764-774 ◽  
Author(s):  
E. M. Clarke
Keyword(s):  
Electron Energy ◽  
Mass Spectrometer ◽  
Ionization Probability ◽  
Yield Curves ◽  
Ionization Yield

An apparatus consisting of an electron energy selector built into a mass spectrometer is described. With it, initial ionization yield curves may be obtained. The interpretation of these curves is discussed, and the following new measurements reported:[Formula: see text]

Single- and double-ionization potentials of polycyclic aromatic hydrocarbons and fullerenes by photon and electron impact

1994 ◽  
Vol 72 (11-12) ◽  
pp. 1060-1069 ◽  
Author(s):  
S. Tobita ◽  
S. Leach ◽  
H. W. Jochims ◽  
E. Rühl ◽  
E. Illenberger ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Synchrotron Radiation ◽  
Electron Impact ◽  
Aromatic Hydrocarbons ◽  
Double Ionization ◽  
Ionization Potentials ◽  
Electrostatic Model ◽  
Yield Curves ◽  
Multiple Ionization ◽  
Polycyclic Aromatic

Single- and double-ionization appearance potentials of 21 polycyclic aromatic hydrocarbons (PAHs) were determined by measurement of photoion yield curves using a synchrotron radiation source. Analogous measurements were made by electron impact on three PAHs. The origin of differences, of up to 4 eV, between appearance potentials for double ionization by photon and electron impact is discussed. The ratio of the double- to single-ionization potentials of PAHs was found to be 2.65 ± 0.06 for photon impact, significantly lower than for electron-impact and charge-stripping measurements. An electrostatic model, which considers that PAHs ionize like fragments of graphite, is applied to the PAHs studied and to data on the fullerenes C60 and C70. The validity and limitations of the model are discussed and its analytical and predictive propensities concerning multiple-ionization potentials and processes are demonstrated.

Study of innershell photo-ionization-pumped L23M1 transition in Ca for the development of femtosecond X-ray laser

2001 ◽  
Vol 11 (PR2) ◽  
pp. Pr2-225-Pr2-231
Author(s):  
D. Kim ◽  
S. H. Son ◽  
J. H. Kim ◽  
Cs. Toth ◽  
C. P.J. Barty
Keyword(s):  
X Ray ◽  
Photo Ionization
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