8783
Dissociative electron attachment spectroscopy ( DEAS ) is used to measure the fragment anion currents generated through dissociative decay channels of the molecular anions of compounds I - V , detected with a mass filter as a function of the incident electron energy in the 0 - 14 eV energy range .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
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