Effect of orifice diameter on the performance of a miniature microwave neutralizer

Indranuj Dey, Naoji Yamamoto, Hideki Nakashima

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A miniature electron cyclotron resonance (ECR) plasma source is operated as a neutralizer, and the effect of orifice diameter on the output is studied. The output is quite promising for accompanying 1-mN-class ion thrusters with an output ion-beam current of 12–15mA. The optimum orifice diameter is independent of neutral mass flow rate, implying that factors other than electron-neutral collisions are dominant. The variation in orifice diameter is expected to alter the microwave field boundary conditions inside discharge chamber (DC), and also influence the dc-electric field existing between the orifice and collector. The convolution of these two factors would be primarily responsible for the optimum orifice diameter.

Original languageEnglish
Pages (from-to)259-262
Number of pages4
JournalTransactions of the Japan Society for Aeronautical and Space Sciences
Issue number4
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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