Bulletin of the Lebedev Physics Institute

, Volume 45, Issue 6, pp 190–194 | Cite as

Development of Microdosimeters for Beam Therapy Based on Superpure Tetramethylsilane and Testing of its Conductivity

  • V. V. SiksinEmail author
  • Yu. P. Endovin


A setup version for producing samples of tetramethylsilane (TMS) and its cleaning from electronegative impurities is developed and tested. Purified TMS can be used in microdosimeters when operating on therapeutic accelerators in planning beam therapy. A monitoring system of the degree of TMS purity by the conductivity and free electron yield is described. A TMS-based microdosimeter can be used in combination with a television-type detector to improve the absorbed dose measurement accuracy in the Bragg peak region.


deep dose distribution electronegative impurities “warm liquids” free electron yield tetramethylsilane (TMS) liquid ionization chambers Bragg peak 


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Authors and Affiliations

  1. 1.Lebedev Physical InstituteRussian Academy of SciencesMoscowRussia
  2. 2.State Scientific Center of the Russian Federation “State Research Institute for Chemistry and Technology of Organoelement Compounds” (SSC RF GNIIChTEOS)MoscowRussia

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