MOLECULAR DISSOCIATION ON BOMBARDMENT BY ELECTRONS OF AN ENERGY LOWER THAN THE IONIZATION POTENTIAL

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-109-C7-110
Author(s):  
I. I. Morozov ◽  
V. L. Talrose
Keyword(s):  
Ionization Potential ◽  
Molecular Dissociation

An Attack on the Contamination Problem in the Electron Microscope

1967 ◽  
Vol 25 ◽  
pp. 368-368
Author(s):  
J. J. Kelsch ◽  
A. Holtz
Keyword(s):  
Electron Microscope ◽  
Pressure Gradient ◽  
Ionization Potential ◽  
Simple Solution ◽  
Specimen Surface ◽  
Contamination Rate ◽  
Local Pressure ◽  
High Ionization ◽  
Hydrocarbon Molecules ◽  
Contamination Problem

A simple solution to the serious problem of specimen contamination in the electron microscope is presented. This is accomplished by the introduction of clean helium into the vacuum exactly at the specimen position. The local pressure gradient thus established inhibits the migration of hydrocarbon molecules to the specimen surface. The high ionization potential of He permits the use of relatively large volumes of the gas, without interfering with gun stability. The contamination rate is reduced on metal samples by a factor of 10.

Density-driven ionization potential depression and its effects on material properties

2019 ◽  
Author(s):  
A Jenei ◽  
S Jiang ◽  
Y Ping ◽  
M Gorman ◽  
S Elatresh ◽  
...  
Keyword(s):  
Ionization Potential ◽  
Material Properties

Measurements of the Rydberg Transition Energies for the n1S0 State and the Ionization Potential for 40Ca Atoms

JETP Letters ◽  
2019 ◽  
Vol 110 (12) ◽  
pp. 761-765
Author(s):  
B. B. Zelener ◽  
S. A. Saakyan ◽  
V. A. Sautenkov ◽  
E. V. Vilshanskaya ◽  
B. V. Zelener ◽  
...  
Keyword(s):  
Ionization Potential ◽  
Transition Energies ◽  
Rydberg Transition
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