1.

It is known that a spectral line lambda= 612nm of an atom is caused by a transition between singlet terms. Calculate the interval Delta lambda between the extreme components of that line in the magnetic field with induction B=10.0KG.

Answer»

SOLUTION :As the spectral line is caused by transition between singlet terms, the `Z` eeman effect willl be normal (since `g=1` for both terms). The energy DIFFERENCE between extreme COMPONENTS of the line will be `2mu_(B)B`. This MUST equal
`-Delta((2piħc)/(lambda))=(2piħc Delta lambda)/(lambda^(2))`
Thus `Delta lambda=(mu_(B)Blambda^(2))/(piħc)=35 p m`.


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