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2007-06-19 22:40:53 · 6 answers · asked by Mark R 2 in Science & Mathematics ➔ Physics
In truth, it doesn't really. Well, there is a threshold effect. The voltage applied accelerates electrons from the cathode to a tungsten anode, across a vacuum. If the electrons are sufficiently energetic, they will interact with the nuclei in the tungsten to produce x-rays. The voltage you apply ensures that the electrons are sufficiently energetic to have these interactions. The frequency of the x-rays produced depends upon the atomic properties of the tungsten, not the voltage you apply to accelerate electrons. The energy spectrum of x-rays produced comprises peaks corresponding to the energy levels of electrons in inner shells of the tungsten nucleus, on a background of a range of energies produced by electrons passing close to the tungsten nuclei ('Bremsstrahlung').
2007-06-19 23:02:02 · answer #1 · answered by Anonymous · 0⤊ 0⤋
X ray machines are normally connected to Voltage Stablizers and UPS,there cannot be problem of voltage change during its operation.Further X ray takes only few seconds to operate.But frequency of X ray remains unchanged even if voltage change.CARITY of image may get affected.
2007-06-27 22:10:44 · answer #2 · answered by leowin1948 7 · 0⤊ 0⤋
Voltage would only affect the amplitude and not the frequency if you are using a well regulated DC (direct current) power source. AC (alternating current) will interfere with the number of cycles per second (frequency) by either an additive or subtractive effect. X-rays cycle at about 10,000,000,000,000,000,000 times per second. Standard wall outlet frequency would add +/-60 cycles per second.
2007-06-19 22:52:46 · answer #3 · answered by Bobtastic 3 · 0⤊ 1⤋
Voltage and Frequency are 2 entirely separate parameters. The frequency typically is controlled by a quartz crystal oscilator, which will only resonate at one specific frequency.
2007-06-19 22:50:34 · answer #4 · answered by johncob 5 · 0⤊ 1⤋
Yes.
Higher voltage results in more energetic electrons,
which in turn produce more energrtic photons
(i.e. qunats of X-ray radiation). X-rays with more
energy have higher frequency, and shorter wavelength.
The formula for maximum frequency is
***************************
Fmax = U e/h = U * 242 TeraHertz / Volt,
***************************
where U is voltage,
e is electron charge, and
h is plank constant.
2007-06-20 04:41:41 · answer #5 · answered by Alexander 6 · 0⤊ 0⤋
tomorrow o.k i have to go sleep now. its 11 pm I'm tired sorry
2007-06-26 10:49:33 · answer #6 · answered by Busybee yep! 5 · 0⤊ 0⤋