Concerning absorption edges: a. K-edge binding energy is lower than L

1.	Concerning absorption edges: a. K-edge binding energy is lower than L-edge binding energy b. Between the K-shell and L-shell, the increase in photoelectric attenuation is proportional to the photon energy c. For tungsten, the K-shell binding energy (Ek) is equal to 74 keV d. There is a sudden increase in attenuation when photon energy reaches L-shell binding energy (EL) e. When choosing a filter, it is important to make sure that the peak of the X-ray spectrum lies on the high-energy side of its absorption edge
Answer» a. False. K-edge binding energy is higher than L-edge binding energy. b. False. As photon energy increases, photoelectric attenuation decreases between the L-shell and the K-shell. c. False. The atomic number of tungsten is 74. Its K-shell binding energy is 70 keV. d. True. When photon energy reaches EL, interaction with L-shell electrons becomes possible and photoelectric absorption increases. e. True.

Concerning absorption edges: a. K-edge binding energy is lower than L-edge binding energy b. Between the K-shell and L-shell, the increase in photoelectric attenuation is proportional to the photon energy c. For tungsten, the K-shell binding energy (Ek) is equal to 74 keV d. There is a sudden increase in attenuation when photon energy reaches L-shell binding energy (EL) e. When choosing a filter, it is important to make sure that the peak of the X-ray spectrum lies on the high-energy side of its absorption edge

Answer»

a. False. K-edge binding energy is higher than L-edge binding energy.

b. False. As photon energy increases, photoelectric attenuation decreases between the L-shell and the K-shell.

c. False. The atomic number of tungsten is 74. Its K-shell binding energy is 70 keV.

d. True. When photon energy reaches EL, interaction with L-shell electrons becomes possible and photoelectric absorption increases.

e. True.