Atomic and Nuclear Physics Answers

1. A nuclear chemist receives an accidental radiation dose of 5.0 Gy from slow neutrons ( RBE= 4.0 ). What does she receive in rad, rem and J/kg.

2. In a diagnostic x-ray procedure, 5.00 × 10 raise to 10 photons are absorbed by a tissue with a mass of .600 kg. The xray wavelength is .200 nm.

A. What is the total energy absorbed by the tissue
B. What is the equivalent dose in rem?

Nuclear size and shape are measurable
through
(A) High energy electron scattering and
nuclear quadrupole measurements
(B) Hyperfine splitting of spectral lines in w – meson atoms
(C) High energy electron scattering
(D) Neutron scattering

The number of strong-magnetic field levels of ²D term is
(A) 8 (B) 10
(C) 12 (D) 5

For d^8 configuration, the total number of
optical electrons is
(A) 1 (B) 2
(C) 3 (D) 4

The degeneracy of spectral term 3F is
(A) 7 (B) 9
(C) 15 (D) 21

Sodium has a work function of 2.36eV. If a beam of monochromatic 442-nm light is incident upon a sample of sodium, will electrons be ejected? At what speed?

the transition J=0 to J=1 in a HCL molecule occurs at 10.08/cm. the rotational constant ?
Answer: 5.34

The disintegration constant of ²³⁸U is 4.87×10⁻¹⁸s⁻¹. Calculate its half life(in years). Also calculate the number of disintegration per second from 1 gram of Uranium. It is given that Avogadro's number= 6.02×10²³

Define binding energy. Calculate the binding energy per nucleon of Fe. Given
( Fe) = 55.934932u, Mn= 1.008665u and Mp= 1.007825 u.

Calculate the activity of K40 in 100kg man assuming that 0.35% of the body weight is potassium. The abundance of K40 is 0.012%, its half life is 1.31 109 years [ Avagadro number, N= 6.023 106] .