XRD Quiz

X-Rays are part of the spectrum of electromagnetic radiation occupying the region between the

• Microwave and visible light rays

• UV and gamma rays

• Visible and gamma rays

• Far infra-red and UV rays

X-rays are produced whenever high-speed electrons collide with the metal target. The electrons source is W filament which acts as…… and the metal target, for example Cu, acts as….

• Anode; cathode

• Cathode; anode

• Potential source; filter

• Potential source; anode

K alpha 1 is the electrons from

• K shell to L2 shell

• L2 shell to K shell

• L3 shell to K shell

• M3 shell to K shell

X-rays are produced whenever matter is irradiated with a beam of high-energy charged particles or photons. Interactions that occur between the beam (i.e., electrons) and target will result in a loss of energy. This process generates

• Bremsstrahlung (continuous) radiation

• Bremsstrahlung (continuous) radiation and characteristic X-ray radiation

• Characteristic X-ray radiation

• High energy X-Ray radiation

The correlation of X-ray wavelength, material lattice spacing, and X-ray diffraction angle is stated by:

• Bragg's law

• Debbye-Scherrer formula

• Bragg - Scherrer formula

• Bragg - Debbye's law

X-ray tube should be vacuumed because:

• Atmospheric gases will scatter the high-speed electrons

• Atmospheric gases will focus the high-speed electrons

• Atmospheric gases increase the pressure in the chamber

• Atmospheric gases will orient the high-speed electrons to the metal

The use of Al thin sheet filter is:

• To absorb low energy photons that add to dose but do not have useful contribution.

• To absorb bremsstrahlung radiation

• To filter the electron

• To remove obstruction of high-speed electrons

Pb is used for shield of X-ray tube because:

• Pb has larger nucleus and higher density electron cloud to absorb radiation than Si window

• Pb has smaller nucleus and higher density electron cloud to absorb radiation than Si window

• Pb has larger nucleus and lower density electron cloud to absorb radiation than Si window

• Pb has better mechanical properties than Si window.

The scattered X-ray radiation should be absorbed by shielding material because:

• It has lower energy and useless

• It is ionized and harmful to human and surrounding

• It is scattered by residual air molecule

• It does not add dose and has no contribution.

The high potential source is used to:

• To produce and accelerate electrons because of the great electric field between anode and cathode.

• To give energy to X-Ray instrument

• To filter high energy photon

• To remove electrons obstructions