|Title||The Franck-Condon principle and the ionization of acetylene by electron|
|Publication Type||Journal Article|
|Year of Publication||1969|
|Journal||CHEMICAL PHYSICS LETTERS|
The threshold ionization of acetylene has been studied using a velocity selected electron beam and mass analysis. Fine structure has been correlated with known vibrational energy levels. Relative transition probabilities differ from optical measurements and suggest a violation of the Franck-Condon principle.