Multiple choice Neutron Activation Analysis relies on the detection of Gamma-ray

Question

Multiple choice

Neutron Activation Analysis relies on the detection of Gamma-rays because:

a.The only source of Gamma-rays in a laboratory will be from the analyte, so interferences will be minimized.

b. Gamma-ray detectors have improved in sensitivity since the mid-1960’s, so greater sensitivity and improved resolution are possible.

c. Gamma-rays are more energetic than Alpha particles or Beta particles, have greater penetrating power, so they can be detected from all atoms within the analyte.

d. Beta particles(electrons) exiting from an atom can collide with other electrons, emitting Auger electrons, whereas Gamma-rays will escape from the atom unchanged in energy.

e. Bremsstrahlung(radiation across a wide energy range) is produced when electrons are halted when they reach a detector, but not when Gamma-rays reach a detector, so there is less extraneous radiation with Gamma-rays.

Explanation / Answer

Neutron Activation Analysis relies on the detection of Gamma-rays because:

c. Gamma-rays are more energetic than Alpha particles or Beta particles, have greater penetrating power, so they can be detected from all atoms within the analyte.

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