The electrons possess kinetic energy once they start to move. This kinetic energy is based on their velocity (K.E =1/2 x mass of the electron x velocity squared). When the electrons interact with the atoms of the anode target material their kinetic energy is transformed into electromagnetic energy (heat and x-rays).
The process is very inefficient---less than one percent of the kinetic energy results in x-rays.
Two types of x-rays are produced--Bremsstrahlung and Characetristic.
View the animations above. Distinguish between Bremss and Characteristic X-rays.
How is each type produced?
The diagram to the right shows the range of x-ray energies produced in a Tungsten target and their relative intensities. There are more photons at 59.3 kev, for example, than at any other energy level.Distinguish between Bremsstrahlung and Characetristic x-rays on the diagram. Which type is more abundant? What is the range of energy values for each type?
11 comments:
Characteristic X-rays seems to be more abundant.
Bremsstrahlung x-rays are more abundant, and much more useful to us in diagnostic radiography.
Characteristic x-rays are produced at very specific energy levels depending on the type of anode material.
I agree in saying that the "Characteristic X-Rays" appears to be more abundant than the "Bremsstrahlung". Correct me if I am wrong, according to the graph, "Characteristic X-Rays seems to produce a higher level of amplitude; which means a higher level of intensity, as oppose to the Bremsstrahlung.
My mistake, i was reading the graph wrong.
I actualli understand this.. cool!!
Professor,
I just went on yahoo.com.
Scotch tape produces x-rays.
How 'bout that?
http://www.yahoo.com/s/975293
only the k-characteristic x-rays are useful in imaging
can anyone answer this for me.
page 144 figure 8-6 and 8-7 are they saying that more baseballs are emitted than basketball because of their individual energy and it the same as when x-rays are emitted they have individual energy
I would say that Bremsstrahlung is more abundant according to the graph.
ok been meaning to respond but I just finally read the chapter with a little understanding... Bremsstrahlung x-rays are produced when an electron interacts with the nucleus of an atom and is slowed down while Characteristic x-rays are produced when a projectile electron interacts with a K shell electron. I remember professor saying Bremsstrahlung is always more abundant so from the graph 59.3kev and 67.2kev are characteristics x-rays which are usually represented by a line or peak. The range of energy value for Bremsstrahlung is 0 to maximum and for characteristics is 69 (I think correct me if im wrong)
characteristic xray requires atleast 70kvp before any xray can be produce but bremsstrahlung can produce xray with anything below 70 kvp. thus bremsstrahlung is more abundant.
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