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"blanked"

 
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mi



Joined: 02 Oct 2006
Posts: 52

PostPosted: Tue Nov 21, 2006 4:15 am    Post subject: "blanked" Reply with quote

Hello.
I am now doing some translation work for a microscope and have had a sentence of which I do not get the meaning.
It is;
"The ion beam is blanked."

I am not sure the meaning of "blanked" in this context, so if somebody knows what happens to the beam exactly, please let me know.
Thanks!
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asterix



Joined: 26 Jan 2003
Posts: 1654

PostPosted: Tue Nov 21, 2006 8:27 am    Post subject: Reply with quote

I know nothing about ion beams, but blanked generally means "blanked out", reduced to nothing, cut out, etc..
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Mister Micawber



Joined: 23 Mar 2006
Posts: 774
Location: Yokohama

PostPosted: Tue Nov 21, 2006 3:41 pm    Post subject: Reply with quote

.
Ion beam species filter and blanker

Document Type and Number: United States Patent 4649316

Link to this Page: http://www.freepatentsonline.com/4649316.html

Abstract: A system for incorporation in ion-beam equipment to provide ion species filtering and optional ion beam blanking. The system has four magnets arranged on an optical axis. In between the two center magnets is arranged a plate having an off-axis aperture. The ion beam is caused to converge to a focus on a midplane in which the aforesaid plate is situated. When the magnets are energized, the ion beam is caused to bend by an amount depending upon the charge-to-mass ratio of the ion species within the beam. If constructed correctly, the aperture can thus be arranged to pass only a single ion species, the remainder colliding with and being absorbed by the plate. Beam blanking may optionally be achieved by blanking plates which may be used to deflect the ion beam in such a way that the resultant focal point of the ion beam is displaced away from the aperture so that the whole ion beam is blanked off. Astigmatism introduced into the system may be reduced or eliminated by the use of octopole electrode.

Good luck.
.
_________________
"I really do not know that anything has ever been more exciting than diagramming sentences." � Gertrude Stein
...............
Canadian-American who teaches English for a living at Mr Micawber's
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mi



Joined: 02 Oct 2006
Posts: 52

PostPosted: Tue Nov 21, 2006 6:13 pm    Post subject: Thanks, Mr. Micawber! Reply with quote

Thank you very much.
It really helps me!
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