Dissociative ionisation of H2 and D2 by monoenergetic electron impact in the threshold region

1981 ◽  
Vol 40 (2) ◽  
pp. 235-239 ◽  
Author(s):  
D. Mathur
Keyword(s):  
Electron Impact ◽  
Threshold Region ◽  
Monoenergetic Electron

Electroionization study of ethylene: ionization and appearance energies, ion-pair formations, and negative ions

1987 ◽  
Vol 65 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Pierre Plessis ◽  
Paul Marmet
Keyword(s):  
Electron Impact ◽  
Negative Ions ◽  
High Sensitivity ◽  
Ion Pair ◽  
Common Mechanism ◽  
Threshold Region ◽  
Monoenergetic Electron ◽  
Text Fragment ◽  
First Time ◽  
Very High

Monoenergetic electron-impact threshold ionization and appearance curves of very high sensitivity of ethylene and all fragments containing at least one carbon atom are analyzed in detail. Ionization or appearance energies are measured for all ions, including the [Formula: see text] fragment. Structures are observed in the immediate [Formula: see text] threshold region, which are attributed to hot bands and to Rydberg autoionizing states. [Formula: see text],[Formula: see text] and [Formula: see text] ion-pair formations are reported for the first time. Simultaneous production of positive and negative ions is seen to be a common mechanism by electron impact. Appearance energies of some fragments are several electron volts lower than those of previous works.

Metastable yield of argon between 23 and 37 eV by electron impact

1979 ◽  
Vol 57 (10) ◽  
pp. 1624-1633 ◽  
Author(s):  
P. Marchand ◽  
J. Cardinal
Keyword(s):  
Electron Impact ◽  
Excited States ◽  
Signal To Noise Ratio ◽  
Negative Ion ◽  
Photon Yield ◽  
Large Signal ◽  
Signal To Noise ◽  
Monoenergetic Electron ◽  
Yield Curves ◽  
Noise Ratio

The metastable yield of argon excited by monoenergetic electron impact has been measured between 23 and 37 eV. Thanks to a large signal-to-noise ratio, many very small structures have been detected superimposed on the metastable continuum and are attributed to Ar− negative-ion states and to highly excited states of Ar. The results are compared with broadband photon yield curves and electroionization curves.

Experimental observation of neutral radical formation fromCH4by electron impact in the threshold region

2006 ◽  
Vol 74 (4) ◽  
Author(s):  
C. Makochekanwa ◽  
K. Oguri ◽  
R. Suzuki ◽  
T. Ishihara ◽  
M. Hoshino ◽  
...  
Keyword(s):  
Electron Impact ◽  
Experimental Observation ◽  
Radical Formation ◽  
Threshold Region ◽  
Neutral Radical

L -Shell X-Ray Production Cross Sections of Au and Ir Atoms by Electron Impact near the Threshold Region

2003 ◽  
Vol 20 (9) ◽  
pp. 1485-1487 ◽  
Author(s):  
Wu Zhang-Wen ◽  
Yang Dai-Lun ◽  
Luo Xiao-Bin ◽  
He Fu-Qing ◽  
Peng Xiu-Feng ◽  
...  
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Production Cross ◽  
Threshold Region ◽  
X Ray
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