Answer to Question #281154 in Atomic and Nuclear Physics for Benjamin IRIH

Question

2. (a) Compare or differentiate the Ruby Laser to the Helium Neon Laser with regard to their (i)

Gain medium (ii) Lasing wavelength (iii) uses. [3 marks]

(b) Consider the following nuclear reactions. Classify all the elementary particles involved and

tell (with a brief explanation) which of the three reactions is allowed / not allowed. [3 mark]

i. µ− −→ e− + νµ

ii. γ −→ e− + e+

iii. p + n̄ −→ π + π 0

(c) Briefly describe the basics principles of radiocarbon dating? [2 mark]

(d) Show that average lifetime (meanlife) of a radioactive nucleus is equivalent to Tm = λ1 , where

λ is the radioactive constant. [2 mar

Answer 1

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