Jet formation in counterstreaming collisionless plasmas

Y. Kuramitsu, Y. Sakawa, J. N. Waugh, C. D. Gregory, T. Morita, S. Dono, H. Aoki, H. Tanji, B. Loupias, M. Koenig, N. Woolsey, H. Takabe

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


Plasma jet formation was observed in counterstreaming plasmas in a laboratory experiment. In order to model an ambient plasma of astrophysical jets, the counterstreaming plasmas were created by irradiating a double CH-plane target with a high-power laser system. Since the mean free paths of the ions in terms of the counterstreaming motion were larger than the scale length of the experiment, the two-stream interaction of the plasmas was essentially collisionless. The time evolution of the jet collimation was obtained over several shots with different timing by shadowgraphy. When a single CH-plane target was irradiated, no jet collimation was observed. The counterstreaming plasma as an ambient plasma is essential for the jet plasma to collimate.

Original languageEnglish
Pages (from-to)L137-L141
JournalAstrophysical Journal
Issue number2 PART 2
Publication statusPublished - 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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