Question

Hey guys !!
Note on Stark effect !
Regards​

Answer 1

Answer:

The Stark effect is the shifting and splitting of spectral lines of atoms and molecules due to the presence of an external electric field. It is the electric-field analogue of the Zeeman effect, where a spectral line is split into several components due to the presence of the magnetic field. I just got this from internet.....if u need more information I can send u the web link too.....if u need the link let me know

Answer 2

Hola mate

Here is your answer -

The splitting and shifting of spectral lines in the presence of external electric field is called “ stark effect “ .

Experimentally the stark effect requires placing of an external electric field either parallel or perpendicular to the direction of the radiation between the degeneracy of each energy level is lifted when the substance is subjected to an external field .

The angular momentum of a rotating system can be represented by a vector along the axis of rotation with a magnitude .

IW =√J(J+1) h/2π.

In the absence of external field this vector is free to take any orientation in the space .

But in the presence of external field this vector can have only a fixed number of orientations decided by the quantum number m which can have (2J+1) values because of this restriction on the orientation of the angular momentum vector with respect to the direction and the selection rules for the transition are

∆J=+or - 1 and ∆M=0.

In case of linear molecules stark effect is known as “second order stark effect “. Because ∆r is directly proportional to (P.E)2

Where ∆r is called shift in the spectral line and P is called dipolemoment and E is called applied electric field .

In case of non linear molecules stark effect is shown as first order stark effect because ∆r is directly proportional to the P.E