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is placed inside an homogeneous plasma.
 
is placed inside an homogeneous plasma.
  
a) Show that the charge in the shielding cloud exactly cancels \(q_T\). Calculate the total charge inside spheres of radii \( \lambda_D/2 , \; \lambda_d\) and \( 5\lambda_D \)
+
a) Show that the charge in the shielding cloud exactly cancels \(q_T\). Calculate the total charge inside spheres of radii \( \lambda_D/2 , \; \lambda_D\) and \( 5\lambda_D \)
  
 
b)Determine the electrostatic interaction energy between the test
 
b)Determine the electrostatic interaction energy between the test
 
charge and the particles in the plasma and the total mean energy
 
charge and the particles in the plasma and the total mean energy
 
of the plasma particles (assume \( T_e=T_i=T\) ).
 
of the plasma particles (assume \( T_e=T_i=T\) ).

Revisão das 19h41min de 2 de março de 2017

Consider Debye’s potential created by a punctual test charge \(q_T\) that is placed inside an homogeneous plasma.

a) Show that the charge in the shielding cloud exactly cancels \(q_T\). Calculate the total charge inside spheres of radii \( \lambda_D/2 , \; \lambda_D\) and \( 5\lambda_D \)

b)Determine the electrostatic interaction energy between the test charge and the particles in the plasma and the total mean energy of the plasma particles (assume \( T_e=T_i=T\) ).