Recent content by ENDLESSYOU

Hi! I have some trouble with atomic unit. I have a laser pulse with the wavelength of ##800 nm## at the peak intensity of ##1.0*10^{14} W/cm^{2}##. I'd like to calculate the corresponding electric field ##E_0##. I use the formula ##I=0.5Cε_0{E_{0}}^2## and ##1 a.u.=5.14*10^{11} V/m## to obtain...

It's in the ground state, so that it has zero orbital angular momentum.

"There are 47 electrons surrounding the silver atom nucleus, of which 46 form a closed inner core of total angular momentum zero – there is no orbital angular momentum, and the electrons with opposite spins pair off, so the total angular momentum is zero, and hence there is no magnetic moment...

The probability is one dimensional real number, while the probability ampilitude is two dimensional complex number. It is this two dimension makes it possible for the phenomenon like interference which needs the concept of phase. If we add two probability together, there won't be such...

Can anyone give me a brief introduction? Thanks!

Thanks for your interpretation in a mathematical way!

Thanks! But I still have some problems. 1. If there are several free atoms, their z-axes may be in different directions? 2. This arbitary direction is physically existence or just a mathematical construct? 3. The solutions with same n and l have different probability density, but when we add...

When solving the three dimensional Schrödinger equation, we obtain a probability distribution on θ. But it seems like the procudure produces a particular direction the z-axis. While the Coulomb field is spherical symmetric, it shouldn't exist such a preferred direction. I'm puzzled.

From Quantum Physics of Atoms, Molecules, Solids, Nuclei, and Particles, Eisberg-Resnick: "A physical example approximating the idealized situation represented by these wave functions would be a proton moving in a highly monoenergetic beam emerging from a cyclotron. Such beams are used to...

Thanks!

I have a basic problem about Planck's quantization of energy, ε=hv. It's said that we can only get the integer product of hv, that's the quantilization. But when we plug in v, we can plug any continuous value? Does that mean a particular standing wave in a capacity is specifield a particular v...

They're stiff differential equations so ode15s might be a better choice. In my experience, MATLAB is more 'stable' than Mathematica. I once executed a same nb file on Windows and Ubuntu, but I got two different results.

Thanks. I can use 'mphandle = mupad' to create a MuPAD notebook, and input the syntax.

My version is R2012b, and I just copied the codes form the examples on the webpage. But it failed. It seems like the problem is about '::'.

Thanks. I'm dealing with the restricted circular three-body problem and solving the differential equations though numerical methods, ode15s on MATLAB and NDSolve on mathematica.