Transition Definition and 496 Threads

Hello gentlemen, I am trying to understand better processes that can cause "spin-flipping" to occur for magnetic moments in a bias field along the z-axis, Bz. The application of a oscillating field in the xy-plane is well known to me. If the oscillating frequency is at the Larmor frequency...

Homework Statement Given a Probability transition matrix, starting in X0= 1, determine the probability that the process never reaches state 2. Homework Equations The Attempt at a Solution State 2 is not an observing state, so I'm not sure how to find this probability. Any help...

More specifically, consider a Hamiltonian with a changeable parameter a. When changing a, the ground state of the system will change. In some cases, one phase crossovers to another, like in other cases, there's a phase transition. What factor determines the difference? Actually I am now working...

Hi, An electron transition generates a frequency emission u=E/h . In this case the electron moves from one energy to another. My question is how long this transition last for each atom ? If I was observing a single atom transition what would I measure ? A single burst at a frequency u=E/h...

This was a problem on my Thanksgiving break chemistry homework. Some assistance would be greatly appreciated. Why does electromagnetic radiation in the ulraviolet region represent a larger energy transition than does radiation in the infrared region?

What's the main reason behind the fine structure of X-Ray transition?

Which electron transitions in singly-ionized Helium (He+) yield photons in the blue (450-500 nm) portion of the electromagnetic spectrum? What are their wavelengths, and what transitions do they represent? Homework Equations hear is the equation I tried to use an equation creator but did not...

Homework Statement use the RYDBERG formula to suggest a possible transition that would result in the observed wavelength Homework Equations Hydrogen - yellow wavelength about 600nm The Attempt at a Solution I used c= lambda x frequency(V) and found (V) to equal 5e14/second I then...

Hello everyone, I'm new to this forums. Been lurking around for a while, but finally decided to join :) So anyways, I'm a current high school senior right now, taking Calc BC. I'm hoping to major in a math-related field (mathematics, physics, or electrical engineering) when I get to college...

Homework Statement A hydrogen atom is placed in a time-dependent homogeneous electric field given by \epsilon = \epsilon_0 (t^2 + \tau^2)^{-1} where \epsilon_0,\tau are constants. If the atom is in the ground state at t=-\inf, obtain the probability that it ill be found in a 2p state at...

I'm very confuse about the idea of applying Newton's law of forces and torques on rolling body. The book shows that you can separate the situation in rolling into pure transition and pure rotation. However, what I don't get is, for the calculation of Newton's 2nd law of forces on pure...

6. http://i111.photobucket.com/albums/n149/camarolt4z28/2010-09-23195548.jpg?t=1285299756 I'm thinking I use the omegaij formula to determine the frequency between energy levels and then use that to calculate the wavelength...

To preface, I know about ~nothing about aerodynamics, but have been reading through wiki pages half the morning, but am still not quite sure how to answer a question. Basically my question is concerning the turbulent flow that happens behind an aircraft, maybe just focusing on the wing for now...

Hi Why does Ni only form NiO with oxidation state of +2 whereas the other transition metals form a wide range of oxides with variable oxidation states Thanks

as we know when a particular energy is given to a neutral atom an electron from ground state jump to upper state (absorbing the energy). and that excited electron after sometime by releasing energy jump again to its ground state. my confusion is that firstly does this transition of electron...

This thread is related to another question that I have been pondering. In most objects that we experience on a daily basis (a green shirt for example), we know that most of the frequencies of light striking the object are absorbed. I simply can't believe that the atoms in the shirt have...

Hi all. This is my first post @ physics forum. For last two weeks I have been wondering about this problem: We all know that an atom or molecule subjected to a time-dependent perturbation makes electronic transition, and whether the transition is allowed or not depends on the transition moment...

I need some help how can I calculate a transition probability on this problem: A particle of mass "m" on a potential well (1), where it V(x) is infinite for x>L/2 and for x<L/2 . Inside the region V(x)=0 . I know how I get the eigenfunctions and the Energy. But, than the potential (2) well...

Hi! I saw this words "transition frequency" in the 2N2222A transistor data sheet.f=100MHz. What's this actually? I want to use this transistor 2N2222A to act as a switching application for turning on the motor by using microcontroller. So what should I consider when using this transistor...

Homework Statement Hi all, I've the following problem: I've a series of correlations matrices, suppose 15x15 matrix of correlations between waves heights. Giving an historical series of correlation values, how can I determine a model to establish that the next correlation matrix has a...

this problem is killing me! [calculation of electron transition] i've been trying to solve this problem.. the answer should be 7.. my answer is 0.7 ! What is the value of n_i for an electron that emits a photon of wavelength 93.14 nm when it returns to the ground state in the H atom? my...

If a Markov transition matrix's columns add up to 1, the matrix is a normal Markov transition matrix. Since it is normal, the Markov process must converge to a steady-state vector. Is this correct?

Ok, I'm lost. I've an exam coming up so could so with a speedy reply. This whole transition matrix stuff is not explained at all in our lecture notes. Here's an example question: "Suppose that a country has a fixed number of voters, all of whom vote for either party D or party R. Every...

I am looking at some of the notes but don't quite understand this. What are the physical explanation of the graphs (Fig 4(a) and 4(b)) on Page 4 ? http://www.pma.caltech.edu/~mcc/Ph127/b/Lecture3.pdf" Why V_{g} decreases with temperature but V_{l} increases with temperature?

Homework Statement How many transitions involving the hydrogen energy levels shown correspond to photons of infrared light? The infrared range is less than 1.8 eV Homework Equations Paschen Lines = Infared wavelengths The Attempt at a Solution I thought that since Paschen lines =...

Homework Statement Give the physical explanation of the graphs (Fig 4(a) and 4(b)) on Page 4 http://www.pma.caltech.edu/~mcc/Ph127/b/Lecture3.pdf" Homework Equations 1) Why V_{g} decreases with temperature but V_{l} increases with temperature 2) Why must phase transition happen at...

Homework Statement Explain why 2-bromopropane reacts with NaI in acetone over 10^4 times faster than bromocyclopropane. (Hint: examine the transition state for each of the reactions) Homework Equations The Attempt at a Solution I understand this is a sn2 type reaction and...

Consider a particle in an infinite square well described initially by a wave that is superposition of the ground state and the first excited states of the well: Ψ(x,t = 0) = C[ψ1(x) +ψ 2 (x)] (a) show that the value C =1/ 2 normalizes this wave, assuming 1 ψ and 2 ψ are themselves normalized...

Making the "Transition" Hello. I am currently a freshman in college, finishing up my second semester. I am looking at basically majoring in mathematics. (My actual major title will be Applied Mathematics and Computational Science, I am creating a major plan to better suit my needs.) Regardless...

I am going to start my MS in physics next year as I finish my BS, because I am enrolled in my schools BS/MS program. I was wondering about getting into Phd programs after finishing my masters. Would I be pretty much relegated to staying at the school I already received my masters at? Would top...

Hi Anyone, This is my first post here and i have a bit of a quandry. I'm doing some work related to hyperfine transition levels in Rubidium. Ive been looking and asking but no-one can explain to me satisfactorly how hyperfine splits occur. Mostly i get answers like " you should find out...

Homework Statement Positronium is an atom formed by an electron and a positron. It is similar to the hydrogen atom, with the positron replacing the proton. If a positronium atom makes a transition from the state n = 3 to a state with n = 1, the energy of the photon emitted in this...

Greetings Physics Forums! This is my first post. A physical phenomena that I know for a long time is that when an atom (let's say hydrogen) has an electron that make a quantum jump from a higher energy state to a lower it emits a photon. Suppose the hydrogen atom is isolated from the external...

Hey have another problem with one of my exercises Homework Statement Make a crude estimate for the mean life of an electric dipole transition in a atom E_\gamma = 10 eV in a nucleus E_\gamma = 1 MeV Homework Equations W_{\alpha \beta} &=& \frac{4}{3} \frac{e^2}{\hbar^4 c^3}...

I came across this problem in one of my linear algebra books. A linear transformation T:R^3 ->R^3 has matrix 2 3 0 -1 1 2 2 0 1 with respect to the standard basis for R^3. Find the matrix of T with respect to the basis B={(1,2,1),(0,1,-1),(2,3,2)} The answer given is...

Hi, I keep confusing myself between decoherence and the transition from pure to mixed, both of which, as far as I know, come about due to the interaction of a system with the environment. I like to think about things in terms of the density matrix to get it solid in my head. Can someone...

oiler formula says cosx+isinx but here they multiply by minus the imaginary part of the phasor representation the coefficient of sine is minus the imaginary part why??

from where the I gets the 5 electrons oxygen and hidrogen stay the same?

I have a question regarding the possible oxidation states of metals. I understand how to find the oxidation state of a metal in a compound, that's pretty straightforward. What I'm interested in is finding possible oxidation states given only the name of the metal. For example, Cu has possible...

http://i50.tinypic.com/2a6w9qg.jpg cant see how they put the only the denominator to be equal the new expression. ?

I am very early into my first look at topology (specifically, I am jumping to topology on smooth manifolds through the Baez/Muniain book - Gauge Fields, Knots and Gravity) and I have a few questions. Suppose we have overlapping sets on a manifold A and B like this...

Homework Statement A hydrogen atom is in state (|210>+|211>)/sqrt(2) relative to some fixed coordinate system. Assume only E1 transitions contribute. To which direction in space the rate of emission will be minimal? Homework Equations The rate of emission is proportional to |<F|X|I>...

Hello there, yet another trivial problem: I've attended the 'stochastic process' course some time ago but the only thing I remember is that this kind of problem is really easy to compute, there is some simple pattern for this I presume. thanks for your help, rahl.

http://i47.tinypic.com/2lj3uvl.jpg how did they erased the derivative of I object how did they change the variable?

Homework Statement Is the following transition allowed? [4,3,0,1/2] -> [4,2,1, -1/2] If so, find the energy involved and whether the photon is absorbed or emitted for the hydrogen atom. Homework Equations Selection rules for allowed transitions: \Deltan = anything \Deltal =\pm1...

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How do I find the total electron count in a transition metal complex? For example, something simple like W(CO)6 or even more complicated like RuH(Cl)(PPh3)3? (Note: I don't mean "d electron count" [which I know how to find], I mean "total electron count.")

Homework Statement Transition metal species are known that contain multiple metal-carbon bonds, for example, M=CH2. Describe how the π portion of the M=C bond would be formed using a pure d orbital on M and in what plane the protons on the CH2 group would lie. (A d orbital is employed because...

Suppose that a casino introduces a game in which a player bets $1 and can either win $2 or lose it, both with equal chances. The game ends when the player runs out of money, or when he wins $4. (a) Build a transition matrix for the game, and show that it is not a regular transition matrix...

I have to learn a section from my textbook and I can't seem to undertand what a regular transition matrix is. The definition given is: A transition matrix is regular if some integer power of it has all positive entries. Now an identity matrix isn't regular, but I am pretty sure all integer...