1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Characteristics of a velvet cathode under high repetition rate pulse operation
Rent:
Rent this article for
USD
10.1063/1.3254043
/content/aip/journal/pop/16/10/10.1063/1.3254043
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/10/10.1063/1.3254043

Figures

Image of FIG. 1.
FIG. 1.

Sketch map of the high-current vacuum diode system.

Image of FIG. 2.
FIG. 2.

Typical phase space of electrons emitting from a velvet cathode in the given diode geometry (A-K ).

Image of FIG. 3.
FIG. 3.

Experimentally measured peak values of diode current vs voltage for a velvet cathode, compared with KARAT predictions at A-K gap of 55 mm.

Image of FIG. 4.
FIG. 4.

Typical voltage and current waveforms for a living velvet cathode at 300 Hz (A-K ).

Image of FIG. 5.
FIG. 5.

Dependence of equilibrium pressure on pulse rep-rate.

Image of FIG. 6.
FIG. 6.

Pressure history in the vacuum diode under 300 Hz pulse operation. The base pressure is , and the equilibrium pressure goes up to 1.5 Pa.

Image of FIG. 7.
FIG. 7.

Dependence of velvet lifetime on pulse rep-rate.

Image of FIG. 8.
FIG. 8.

Typical voltage and current waveforms during the 2000 shots process at 300 Hz (A-K ).

Image of FIG. 9.
FIG. 9.

Evolutions of the diode current and impedance during the 2000 shots process at 300 Hz (A-K ).

Image of FIG. 10.
FIG. 10.

Photograph of the velvet surface after 2000 pulses at 300 Hz.

Image of FIG. 11.
FIG. 11.

SEM images of the velvet surface (a) before and (b) after 2000 shots at 300 Hz (front view).

Tables

Generic image for table
Table I.

The pulse-to-pulse instability (rms) of the diode voltage, current, and current pulse-width (FWHM) with a living velvet cathode under different pulse rep-rate (A-K ).

Loading

Article metrics loading...

/content/aip/journal/pop/16/10/10.1063/1.3254043
2009-10-30
2014-04-25
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Characteristics of a velvet cathode under high repetition rate pulse operation
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/10/10.1063/1.3254043
10.1063/1.3254043
SEARCH_EXPAND_ITEM