Atomic and Nuclear Physics Answers

What are the advantages of the neutron diffraction method?

1 (a) With appropriate diagram(s), describe the X-ray circuit stating the functions of its components

(b) During a diagnostic x-ray examination a 1.5kg portion of a broken leg receives an equivalent dose of 0.55 mSv.

2(i). What is the equivalent dose in mrem?

(ii). What is the absorbed dose in mrad and mGy?

(iii). If the x-ray energy is 60 keV, how many x-ray photons are are absorbed

The half life of neutron is 693 seconds.What fraction of neutrons will decay when a beam of neutrons having kinetic energy 0.084 eV travells a distance of 1km? (mass of neutron =1.68times10^(-27)kg and ln2=0.693)

Ans 25×10^-5

The molecule of Cl2 (molar mass ( ) 2 µ Cl = 70 g/mole) with velocity v = 300 m/s, absorbs a photon with the wavelength λ = 380 nm,. As the result the molecule splits into 2 separate atoms. One of them obtains the velocity 1 v = 1000 m/s orthogonal to the initial velocity of the molecule. What was the binding energy of the molecule? The pulse of the photon may be neglected. Please, express result is Joules, multiplied by the factor 19 10 and write it down rounded up to 3 significant digits.

The radioactive nuclei 60Co is widely used in medical applications. It undergoes

beta decay, and the total energy of the decay process is 2.82 MeV per decay event. The

half-life of this nucleus is 272 days. Suppose that a patient is given a dose of 6.9 µCi of

60Co. If all of this material decayed while in the patient's body, what would be the total

energy deposited there?

Sodium ions are used by your body every time you move a muscle. The difference between the Na+ ions and atomic Na is that

Write 5 fission reaction

the half life of polonium is 140 days.percent decrease per hour

A teacher uses a geiger Muller tube and counter to measure the number of counts in 60 seconds for a radioactive rock.

the counter recorded 819 counts in 60 seconds. the background radiation count was 0.30 counts per second. Calculate the count rate for the rock

How does X-rays translate into the image the radiographer sees