The excited states of 1, 3‐butadiyne determined by electron energy loss spectroscopy

1984 ◽  
Vol 80 (12) ◽  
pp. 6020-6024 ◽  
Author(s):  
Michael Allan
Keyword(s):  
Energy Loss ◽  
Excited States ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Electron Energy Loss

Excited states in yttrium orthovanadate studied by electron-energy-loss spectroscopy and x-ray photoelectron spectroscopy

1980 ◽  
Vol 22 (10) ◽  
pp. 4698-4709 ◽  
Author(s):  
I. M. Curelaru ◽  
E. Suoninen ◽  
P. Ahlqvist ◽  
P. Apell ◽  
E. Minni ◽  
...  
Keyword(s):  
Energy Loss ◽  
Excited States ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Electron Energy Loss

Planetary atoms

1977 ◽  
Vol 353 (1673) ◽  
pp. 289-297 ◽  
Keyword(s):  
Energy Loss ◽  
Excited States ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Ground State ◽  
Classical Mechanics ◽  
Optical Excitation ◽  
Detailed Structure ◽  
Electron Energy Loss

A planetary atom is an atom or ion in a state, with two or more excited electrons, which has negligible overlap with the ground state or first few excited states. Classical mechanics and Einstein-Brillouin-Keller quantization are used to study them. They are not produced by direct (one-photon) optical excitation from low states, statistically they predominate over states which can be produced by direct optical excitation, and they are long-lived. Each state is a member of a series labelled by a half-odd-integer scaling number v . The states of the series have energies which are approximately proportional to 1/ v 2 . The energies of the states of a planetary atom depend on the charge of the parent ion, and not on its detailed structure. Electron energy loss spectroscopy is a possible means of studying planetary atoms experimentally.

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