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Xray Tube
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Jul 23 2008, 1:06 AM EDT
AndyC
Moved from: General Radiography
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AndyC
Jul 23 2008, 1:06 AM EDT
Jul 23 2008, 1:05 AM EDT
AndyC
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4 words added
67 words deleted
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performance
medical X-ray tubes. Contemporary CT tubes have power ratings of up to 100 kW and anode heat capacity of 6 MJ, yet retain an effective focal spot area of less than 1 mm2.
Simplified rotating anode tube schematic A: AnodeC: cathodeT: Anode targetW: X-ray window
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(Word count: 931)
Jul 23 2008, 1:03 AM EDT
AndyC
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389 words added
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The rotating anode tube is an improvement of the Coolidge tube. Because X-ray production is very inefficient (99% of incident energy is converted to heat)
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(Word count: 998)
Jul 23 2008, 12:56 AM EDT
AndyC
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5 words added
13 words deleted
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10-4 Pa, or 10-6
Torr). In the Coolidge tube, the electrons are produced by thermionic effect from a tungsten filament heated by an electric current. The filament
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(Word count: 601)
Jul 23 2008, 12:55 AM EDT
AndyC
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219 words added
240 words deleted
2 images added
Change:
Crookes. It was used to make a visible
Coolidge
fluorescence on
in
minerals.
1913.
The
Crookes tube
Coolidge
is
tube,
also called
discharge tube or
cold
hot
cathode
tube.
It
tube,
is
a glass
the
bulb
most
with
widely
around
used.
a
It
thousandth
works
of
with
sea-level
a
atmospheric
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(Word count: 610)
Jul 23 2008, 12:50 AM EDT
AndyC
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35 words added
1 image added
Change:
Crookes X-ray tube from early 1900s. The cathode is on the right, the anode is in the center with attached heat sink at left. The device at top is used to regulate the gas pressure.
Historically, the first X-ray tube was invented
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(Word count: 627)
Jul 23 2008, 12:47 AM EDT
AndyC
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576 words added
Change:
It is a glass bulb with around a thousandth of sea-level atmospheric pressure of air (approximately 100 pascals or 1 torr). It contains an aluminum
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(Word count: 591)
Jul 23 2008, 12:35 AM EDT
Anonymous
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Created by Anonymous Jul 23 2008, 12:35 AM EDT for: no reason given
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