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Chinese Physics, 2006, Vol. 15(3): 496-501    DOI: 10.1088/1009-1963/15/3/008
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Gaussian wave formalism model for propagation of charged-particle beam through a first-order optical system

Chen Bao-Xin (陈宝信)
School of Science, Zhejiang University of Science and Technology, Hangzhou 310023, China
Abstract  An elliptical Gaussian wave formalism model of a charged-particle beam is proposed by analogy with an elliptical Gaussian light beam. In the paraxial approximation, the charged-particle beam can be described as a whole by a complex radius of curvature in the real space domains. Therefore, the propagation and transform of charged-particle beam passing through a first-order optical system is represented by the ABCD-like law.As an example of the application of this model, the relation between the beam waist and the minimum beam spot at a fixed target is discussed. The result, well matches that from conventional phase space model, and proves that the Gaussian wave formalism model is highly effective and reasonable.
Keywords:  complex radius of curvature      transfer matrix      ABCD-like law      charged-particle beam  
Received:  15 August 2005      Revised:  01 November 2005      Accepted manuscript online: 
PACS:  41.75.-i (Charged-particle beams)  
  41.85.Ja (Particle beam transport)  
  41.85.Ew (Particle beam profile, beam intensity)  
  42.25.Bs (Wave propagation, transmission and absorption)  
Fund: Project supported by the Scientific Research Foundation of Zhejiang University of Science and Technology, China.

Cite this article: 

Chen Bao-Xin (陈宝信) Gaussian wave formalism model for propagation of charged-particle beam through a first-order optical system 2006 Chinese Physics 15 496

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