Abstract

Optical image structures from early breakdown (≈200 nsec) to focus formation (~1300 nsec) in 3 Torr hydrogen were studied by means of 2 image converter shutters having 50-nsec and 10-nsec exposure. Space charge limited cathode spots at the outer electrode (OE)—spoke-shaped positive columns across the gap—and an extended electron cloud along the center electrode (CE) determine the current flow during early breakdown. Ionization increases exponentially within the center gap plasma. This is separated from the CE by a pattern of anode drop filaments. Filament structures grow into the z-axis accelerated current sheath, which in addition carries the early spoke pattern. The sheath appears homogeneous after leaving the accelerator exit.

© 1979 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Plasma development in the accelerator of a 2-kJ focus discharge: addendum

Heinz Fischer and K. H. Haering
Appl. Opt. 18(22) 3733-3734 (1979)

Breakup-initiated shockfront development in a 2-kJ plasma focus discharge

Heinz Fischer and K. H. Haering
Appl. Opt. 19(7) 1020-1022 (1980)

Development of a Lyman Capillary Discharge

E. Painter and E. Harting
J. Opt. Soc. Am. 62(12) 1455-1458 (1972)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription