Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...707l.137k&link_type=abstract
The Astrophysical Journal Letters, Volume 707, Issue 2, pp. L137-L141 (2009).
Astronomy and Astrophysics
Astronomy
3
Galaxies: Jets, Ism: Jets And Outflows, Magnetic Fields, Methods: Laboratory, Plasmas
Scientific paper
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.
Aoki Hideo
Dono S.
Gregory C. D.
Koenig Markus
Kuramitsu Yasuhiro
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