116 



Research and National Purpose 



SODIUM 

 f = 50 Mc/S 

 d = 0.48 mm 



NO TRANSMISSION- 



J \ L 



20 



40 



60 

 B (k GAUSS) 



80 



100 



Figure 12. Response of single-component plasma. 



.01 of the free electron mass upward. Thus, a wide range of 

 new effects leading to the possibilities of amplification, signal 

 processing, storage and indeed a deeper understanding of the 

 very essence of metal behavior is promised by these new effects. 

 They range all the way from the longitudinal waves driven by 

 coulomb forces from electron beam bombardment, to propaga- 

 tion of transverse or partially transverse electromagnetic waves. 

 This much more recent concept, whose first discussion was by 

 Constantinov and Perell in 1960 and Aigrain, was confirmed 

 by Buchsbaum and Gait in earlier cyclotron resonance measure- 

 ments. When these are two component waves from electrons 

 and holes they are called Alfven waves, whereas when there is 

 a single component plasma and the mobile carriers have a net 

 charge, the magnetic line acquires both mass and charge den- 

 sity, and is denoted a helicon wave. 



