Review_week 2_Radiation Protection

One of this is not a direct ionizing radiation?

• Proton

• Electron

• neutron

• Positron

Energy loss of charged particles by :

• Ionization

• Excitation

• Bremsstrahlung

• all is correct

The Figure represents:

• ionization

• excitation

• absorption

• charged atom

2 Mev beta particle passing through air. The energy required to produce Ion pair (W-value) is 34 ev. How many ion pairs this radiation will generate across its path length?

• 58,823 Ion pair

• 558,823 Ion pair

• 50,000 Ion pair

• 0.0588 Ion pair

what is the incident energy of beta particle that passed through air and produced 100,000 ion pair along its path, knowing the energy required to produce Ion pair (W-value) is 34 ev?

• 3400 ev

• 3.4 Mev

• 3 Mev

• 34,000 Kev

Q1. A 4.9 MeV alpha particle travels a distance of 4 cm through the air before losing all its energy. The W-value is 34 eV. The number of ion-pairs produced and The specific ionization, respectively are:

• 0.144117 Ion pair, 36029 Ion pair/cm

• 144117 Ion pair,

  0.36029 Ion pair/cm

• 0.144117 Ion pair, 0.36029 Ion pair/cm

• 144117 Ion pair, 36029 Ion pair/cm

as the MASS of charged particle increase, the specific ionization

• Decrease

• increase

• constant

as the CHARGE of charged particle increase, the specific ionization

• constant

• decrease

• increase

As the ENERGY OF THE PARTICLE increase, the specific ionization

• increase

• decrease

• constant