Understanding Electrode Plasma Formation on Wires and Thin Foils Via Vacuum Ultraviolet Spectroscopy of Desorbed Surface Contaminants

2021 ◽  
Author(s):  
T. J. Smith ◽  
M. D Johnston ◽  
N. M. Jordan ◽  
M. E. Cuneo ◽  
G. R. Laity ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
Plasma Formation ◽  
Ultraviolet Spectroscopy ◽  
Thin Foils ◽  
Surface Contaminants ◽  
Vacuum Ultraviolet Spectroscopy

Structures of Pyridine–Water Clusters Studied with Infrared–Vacuum Ultraviolet Spectroscopy

2021 ◽  
Vol 125 (34) ◽  
pp. 7489-7501
Author(s):  
Jun-Ying Feng ◽  
Yuan-Pern Lee ◽  
Henryk A. Witek ◽  
Po-Jen Hsu ◽  
Jer-Lai Kuo ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
Water Clusters ◽  
Ultraviolet Spectroscopy ◽  
Vacuum Ultraviolet Spectroscopy

Techniques of Vacuum Ultraviolet Spectroscopy

Physics Today ◽  
1968 ◽  
Vol 21 (12) ◽  
pp. 79-81 ◽  
Author(s):  
James A. R. Samson ◽  
Stanley S. Ballard
Keyword(s):  
Vacuum Ultraviolet ◽  
Ultraviolet Spectroscopy ◽  
Vacuum Ultraviolet Spectroscopy

Identifying Thermal Decomposition Products of Nitrate Ester Explosives Using Gas Chromatography–Vacuum Ultraviolet Spectroscopy: An Experimental and Computational Study

2020 ◽  
Vol 74 (12) ◽  
pp. 1486-1495 ◽  
Author(s):  
Courtney A. Cruse ◽  
Jingzhi Pu ◽  
John V. Goodpaster
Keyword(s):  
Thermal Decomposition ◽  
Gas Chromatography ◽  
Density Functional ◽  
Vacuum Ultraviolet ◽  
Computational Study ◽  
Ultraviolet Spectroscopy ◽  
Decomposition Products ◽  
Nitrate Ester ◽  
Vacuum Ultraviolet Spectroscopy ◽  
Synchrotron Spectroscopy

Analysis of nitrate ester explosives (e.g., nitroglycerine) using gas chromatography–vacuum ultraviolet spectroscopy (GC–VUV) results in their thermal decomposition into nitric oxide, water, carbon monoxide, oxygen, and formaldehyde. These decomposition products exhibit highly structured spectra in the VUV that is not seen in larger molecules. Computational analysis using time-dependent density functional theory (TDDFT) was utilized to investigate the excited states and vibronic transitions of these decomposition products. The experimental and computational results are compared with those in previous literature using synchrotron spectroscopy, electron energy loss spectroscopy (EELS), photoabsorption spectroscopy, and other computational excited state methods. It was determined that a benchtop GC–VUV detector gives comparable results to those previously reported, and TDDFT could predict vibronic spacing and model molecular orbital diagrams.

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