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Atomic, Solid State, Comp. Physics

- Exp. & theo. methods for atoms, molecules, condensed matter
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:41 AM
ZapperZ
1 25,732
I'm writing a little bit of Mathematica code that should be able to make a reasonable powder diffraction spectrum. The...
Y 01:35 PM
SadScholar
0 104
All the books that deal with the p-n junction under applied bias asume that the same equations used for the...
Y 03:05 AM
zhanghe
2 904
Why are absorption cross sections for atoms so much larger than that of molecules. For example, the absorption...
Y 02:33 AM
Simon Bridge
4 180
Dear mates: During ionization with radiant energy there is a photon emission (see ...
Aug20-14 09:56 PM
euquila
3 101
Would one expect the emission and absorption spectral lines for Hydrogen to be at slightly different frequencies ? So...
Aug20-14 04:38 AM
neilparker62
3 252
The following website explain this concept badly: ...
Aug20-14 01:00 AM
Zashmar
0 114
Hi people, I'm researching about the interactions of two carbon atoms using the Lennard-Jones potential and I need...
Aug19-14 09:15 PM
Kjiel
2 328
I am trying to understand what is meant by the phrase 'absorbed and emitted bosons'. Is it the same as destroyed and...
Aug19-14 12:41 PM
AlexanderRios
2 153
After specifying the primitive vectors of a structure namely (a,b,c) in Wien2k, one has to specify locations of atoms...
Aug19-14 11:57 AM
hokhani
0 116
I have some XPS spectrums that I am trying to fit (my first time doing so), using XPSpeak. I understand that for...
Aug18-14 03:18 AM
M Quack
1 168
Hi, I have a question regarding the temperature dependence of the light yield in scintillators. I will attach a...
Aug18-14 12:32 AM
e.bar.goum
2 266
what is the rule of delta E= A/r^12 _ B/r^6 ????
Aug16-14 05:04 PM
Vagn
1 202
Hi Guys, I read that the Fermi level of semiconductor, like germanium, is in-between the completely occupied upper...
Aug16-14 12:28 AM
Simon Bridge
1 221
To whom is able to answer this: I think that when radiant energy get in contact with matter three basic phenomena...
Aug14-14 03:26 PM
mathman
1 285
Good evening. Usually we say that during light-matter interaction, energy of light should be transferred piece by...
Aug14-14 03:51 AM
xxfzero
6 460
Dear All, for different oxidation states of the same element in X-ray photoelectron spectroscopy measurements,...
Aug13-14 10:17 PM
Greg Bernhardt
1 271
Why is electron rotating in h/2pi orbit does not radiate energy
Aug13-14 12:50 PM
cbram
4 312
Hi, I got the complex conductivity vs. frequency table of a metamaterial. Its first lines are like this: f ...
Aug13-14 02:54 AM
DrDu
3 354
So i'm trying to use the excitation law of Boltzmann and the ionisation law of Saha to calculate stuff about what...
Aug12-14 03:56 PM
Greg Bernhardt
1 304
Hello guys, first post in this forum :) Magnetism has always been complicated to understand for me, and I would...
Aug12-14 03:28 PM
M Quack
3 325
According to the schematic (FIG 1) in this paper (http://journals.aps.org/prb/abstract/10.1103/PhysRevB.80.085202)...
Aug12-14 01:53 PM
Useful nucleus
5 400
I have some confusion about multiple scattering. We always say that the problem of single scattering is always...
Aug10-14 12:02 AM
vrinda mukund
15 448
Hello. I have been in contact with some papers that use DFT softwares for calculating properties of solids,...
Aug8-14 08:48 AM
Useful nucleus
6 760
Hi Here is the number for the measured frequency for hydrogen 1s to 2s transition: 2 466 061 413 187 035 Hz ...
Aug8-14 04:51 AM
neilparker62
4 361
Hi Everyone, I was curious as to what the most current model in solid state physics is. I've studied the Einstein...
Aug5-14 09:05 AM
irishhockey
4 499
Learing about matter and what it is composed of, I'm spending a lot of time trying to wrap my brain around the idea...
Aug4-14 12:20 PM
phinds
22 1,295
I've heard any many places that the density of states (DOS) can be determined from an x-ray photoelectron spectroscopy...
Aug4-14 01:37 AM
t!m
1 273
What is the difference between complete and incomplete mode locking in charge density wave systems?
Aug3-14 12:01 PM
Greg Bernhardt
1 343
Hi Guys! I have a confusion which I hope you can help clear up. The mathematical expression of the first law of...
Aug3-14 12:02 AM
Simon Bridge
1 300
You can use transfer matrix method for 2d Ising model. Is there a list of models for which this method could be of...
Aug1-14 09:37 PM
t!m
1 372
My base understanding of the solar cell is as follows: Light hits metal in solar cell and emits electron via...
Aug1-14 09:22 PM
t!m
1 325
In a perfect periodic crystal, do lattice vibrational modes corresponding to different wave vectors (k-vectors)...
Aug1-14 03:33 PM
DrDu
7 511
Hello, I am wondering about a photon absorption/emission by an atom. We have been told at the university an...
Aug1-14 10:08 AM
-SJ-
4 431
So if a Titanium Ion has a charge of +2, does that mean it has a whole charge of twice the electron charge....so 2Xe?
Jul30-14 07:43 AM
Alok Ranjan
4 751
It's known that the Density of States in 2D is given by, g_2(E)dE = \frac{a^2m}{\pi\hbar^2}dE The density of...
Jul29-14 10:37 PM
acb
2 1,312
Hi, I just read a paper on graphene's basic properties and it says that since current density J is given as ...
Jul28-14 05:00 PM
Greg Bernhardt
1 543
I have been chewing up some time ago the Schottky-Mott theory of Schottky Barrier height (which ignores the surface...
Jul28-14 05:00 PM
Greg Bernhardt
1 692
Hello! I was wondering what would happen if you placed a piece of undoped Si in an external electric field (say,...
Jul28-14 12:04 AM
Sunfire
1 436
Hello everyone. I am a Hungarian born Australian theoretical/applied physicist. This is my first post on the...
Jul26-14 12:32 PM
steve_h
3 1,030
I knew this may not be possible, but I was wondering if you can compare kinetic energy with the energy that makes up...
Jul25-14 03:06 PM
mathman
3 705

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