Go Back   Physics Help Forum > College/University Physics Help > Quantum Physics

Quantum Physics Quantum Physics Help Forum

Reply
 
LinkBack Thread Tools Display Modes
Old Mar 23rd 2009, 04:00 AM   #1
Junior Member
 
Join Date: Jul 2008
Location: sydney
Posts: 14
First 6 allowed states for an electron in an infinite square well of width 0.2nm

Hi, just want to check if this is correct.

Question asks to find the first 6 allowed states for an electron in infinite square well of width 0.2nm (Partial answer E1=9.4eV E2=37.6eV)

For an infinite square well En is given by
$\displaystyle E_n = \frac{{n^2 \pi ^2 \hbar ^2 }}{{2mL^2 }}$

I just went that E being proportional to n^2 than E at n=3 would be 3^2 time E3 thus giving 84.6eV and similarly E4=150.4eV , E5=235eV and E6=338.4eV

Or should have this been done differently?
craka is offline   Reply With Quote
Old Mar 23rd 2009, 04:40 AM   #2
Physics Team
 
Join Date: Feb 2009
Posts: 1,425
That is perfectly fine except you havenít mentioned E2 = 37.6 ev.
physicsquest is offline   Reply With Quote
Old Mar 23rd 2009, 05:00 AM   #3
Junior Member
 
Join Date: Jul 2008
Location: sydney
Posts: 14
Thanks. I didn't mention E2 as it was E1 and E2 were already given.
craka is offline   Reply With Quote
Reply

  Physics Help Forum > College/University Physics Help > Quantum Physics

Tags
02nm, allowed, electron, infinite, square, states, width



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
If you raise the electron to other higher shell states, can light transmission throug timemachine2 Light and Optics 2 Feb 2nd 2016 10:21 PM
Particle in an infinite square well roger Quantum Physics 0 Jan 31st 2015 11:14 AM
Particle in Infinite square walls which suddenly disappear. eberth_quezada Quantum Physics 3 Oct 9th 2011 04:44 AM
Infinite Conductor within Infinite Conductor - Current Density between BloodBaneZXY Electricity and Magnetism 2 May 3rd 2010 02:12 AM
Shifted infinite well synclastica_86 Quantum Physics 1 Oct 1st 2009 10:00 AM


Facebook Twitter Google+ RSS Feed