Sterilization of medical equipment using air torch plasma produced by microwave discharge

Nobuya Hayashi, Takaomi Nakashima, Akira Yonesu

Research output: Contribution to journalArticle

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Sterilization of non-heat-proof equipment was performed by irradiation from air torch plasma produced by a microwave discharge. The downstream region of the torch plasma exhibits a yellowish color. Light emission spectra and chemical indicators show that nitrogen oxide radicals are the origin of this color. Inactivation of spore-type Geobacillus stearothermophilus with a population of 105 was successful for a treatment period of 10 min.

Original languageEnglish
Article number5767560
Pages (from-to)2976-2977
Number of pages2
JournalIEEE Transactions on Plasma Science
Issue number11 PART 1
Publication statusPublished - Nov 1 2011
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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