Saturation factor in neutron activation analysis is (A= induced radioactivity, ψ= neutron flux, σ= effective nuclear cross section, N = no. of target atoms, λ= decay constant)

Q33 · CSIR-NET Chemistry, December 2016

Paper: CSIR-NET December 2016 · Subject: Physical Chemistry · Chapter: Surface Chemistry · Topic: Surface Chemistry – General · Marks: 2 · Difficulty: Medium

Saturation factor in neutron activation analysis is ($A=$ induced radioactivity, $\psi=$ neutron flux, $\sigma=$ effective nuclear cross section, N = no. of target atoms, $\lambda=$ decay constant)

(a)$\dfrac{A}{\psi\sigma N}$

(b)$\frac{\psi \sigma N A}{\lambda}$

(c)$\frac{\lambda}{A \psi \sigma N}$

(d)$\frac{\psi \sigma N}{A}$

Answer

Answer: A ✓ checked by 4AB · confidence high

Explanation

A = Nσψ(1 − e^(−λt)), so the saturation factor (1 − e^(−λt)) = A/(ψσN) (a).

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