Title : 
Spectroscopy of the ground, first and second excited torsional states of acetaldehyde from 0.05 to 1.6 THz
         
        
            Author : 
Smirnov, I.A. ; Alekseev, E.A. ; Ilyushin, V.V. ; Margules, L. ; Motiyenko, R.A. ; Drouin, B.
         
        
            Author_Institution : 
Inst. of Radio Astron. of NASU, Kharkov, Ukraine
         
        
        
        
        
        
            Abstract : 
We performed a new study of acetaldehyde spectrum in a broad frequency range from 0.05 to 1.6 THz. In the framework of the rho axis method a fit within experimental error was obtained for the rotational transitions with J≤66 and Ka≤22 of the vt = 0,1,2 states of acetaldehyde. Our results give an opportunity to produce reliable predictions of the acetaldehyde spectrum in the working frequency range of Herschel and ALMA missions.
         
        
            Keywords : 
infrared spectroscopy; organic compounds; terahertz spectroscopy; ALMA missions; Herschel missions; acetaldehyde spectrum; excited torsional states; frequency 0.05 THz to 1.6 THz; rho axis method; rotational transitions; working frequency; Extraterrestrial measurements; Frequency measurement; Frequency synthesizers; Radio astronomy; Random access memory; Spectroscopy; Synthesizers;
         
        
        
        
            Conference_Titel : 
Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW), 2013 International Kharkov Symposium on
         
        
            Conference_Location : 
Kharkiv
         
        
            Print_ISBN : 
978-1-4799-1066-3
         
        
        
            DOI : 
10.1109/MSMW.2013.6622111