Direct simulation Monte Carlo method for gas cluster ion beam technology

Z. Insepov, I. Yamada

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

A direct simulation Monte Carlo method has been developed and applied for the simulation of a supersonic Ar gas expansion through a converging-diverging nozzle, with the stagnation pressures of P0 = 0.1-10 atm, at various temperatures. A body-fitted coordinate system has been developed that allows modeling nozzles of arbitrary shape. A wide selection of nozzle sizes, apex angles, with diffuse and specular atomic reflection laws from the nozzle walls, has been studied. The results of nozzle simulation were used to obtain a scaling law P0T019/8dαLn β = const. for the constant mean cluster sizes that are formed in conical nozzles. The Hagena's formula, valid for the conical nozzles with a constant length, has further been extended to the conical nozzles with variable lengths, based on our simulation results.

Original languageEnglish
Pages (from-to)283-288
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume202
DOIs
Publication statusPublished - Apr 2003
Externally publishedYes
Event6th International Conference on Computer Simulation of Radiation - Dresden, Germany
Duration: Jun 23 2002Jun 27 2002

Keywords

  • Body-fitted coordinate
  • Cluster size
  • Direct simulation Monte Carlo
  • Supersonic nozzle

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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