AnimAtoms

AnimAtoms

This is a collection of some of the animations produced as a result of our quantum / atomic physics research. One of these days it'll all come together into a nice gift-wrappable package.

Atoms propagating through waveguide bend

Here's some images of a 2-D wavepacket propagating through a 180deg waveguide bend. The time slices are chosen to highlight the dynamics.

• v=3.0 surface plot.gif 6.0 Mbyte
• v=3.0 contour plot.gif 8.7 Mbyte
• v=3.0 flux in bend.gif 8.1 Mbyte

Note that the wavepacket undergoes multimode excitation since the (eigen)modes in the bend are shifted centrifugally outwards compared to the lead modes. Thus different modes are excited through the lead-bend interface mismatching. For more info see bromley03b.pdf
Here's the same calculation in MPEG format (2 versions depending on the speed of your decoder, you might want the padded one!). This is the one i prefer to use in talks with Apple Quacktime (with equal timeslices).

• v=3.0 Another contour plot.mpeg 3.7 Mbyte
• v=3.0 Padded contour plot.mpeg 21.4 Mbyte

Now here's the same wavepacket travelling right on the threshold to only be able to excite the n=1 first excited mode

• v=1.414 surface plot.gif 6.0 Mbyte
• v=1.414 contour plot.gif 8.7 Mbyte
• v=1.414 flux in bend.gif 8.1 Mbyte

note that the n=1 mode travels slowly outwards since it has very little kinetic energy, and the production of the vortices due to mode mixing between the n=0 and n=1 modes! Are there Feshbach-type resonances going on? See bromley04b.pdf.

More animatoms coming...

Links to other Animating Atoms projects

• Klaus Bartschat's Charge Cloud Movies