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.
A low-vacuum ionization gauge with HfC-modified carbon nanotube field emitters
Rent:
Rent this article for
USD
10.1063/1.2909467
/content/aip/journal/apl/92/15/10.1063/1.2909467
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/15/10.1063/1.2909467
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic structure of the ionization gauge utilizing a CNT cathode.

Image of FIG. 2.
FIG. 2.

(a) Measured normalized ion current and (b) electron current vs time when the chamber pressure gradually increased (red line) by introducing helium into it.

Image of FIG. 3.
FIG. 3.

Normalized ion current vs chamber pressure for helium, air, nitrogen, and argon.

Image of FIG. 4.
FIG. 4.

(a) TEM image for the CNT used in the screen-printed cathode. (b) TEM image for the CNT coated by a layer of HfC. (c) High-magnification image of the surface of the modified CNT (white parallel lines indicate the lattice planes). (d) EDX spectrum of the sample shown in (b).

Image of FIG. 5.
FIG. 5.

Electron-current variation of the two samples: pristine screen-printed CNT cathode (black line) and a cathode coated with of HfC (red line). The chamber pressure was varied from by charging with nitrogen.

Loading

Article metrics loading...

/content/aip/journal/apl/92/15/10.1063/1.2909467
2008-04-15
2014-04-16
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A low-vacuum ionization gauge with HfC-modified carbon nanotube field emitters
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/15/10.1063/1.2909467
10.1063/1.2909467
SEARCH_EXPAND_ITEM