Animations
Periodic table morph
This movie begins with the Periodic Table of the Elements and transforms it into the Chart of the Nuclides. It can be used to explain the relationship between the Periodic Table and the Chart of the Nuclides and conveys the vast number of radioactive nuclei that are available for experimental study. Each element is broken off the Periodic Table and its individual stable isotopes are displayed. Next, the known radioactive elements are displayed according to their decay mode and the last step displays the predicted radioactive nuclei.
Valley of Beta Stability
The mass
excess of a nucleus describes the relative binding energy difference
between the nucleus and its constituent protons and neutrons. For a
given mass number (isobars) the smaller the mass excess the more stable
the nucelus with respect to beta decay. Plotting the mass excess for a
given isobaric chain reveals a parabola in which the stable nuclei occur
at the minimum. Shown here is the mass excess for each isotope
relative to the minimum mass excess in its mass chain. The views are (from
middle top counter clockwise), a 2D view of the entire chart of nuclides,
the entire chart of nuclides showing the steep sides of the valley of
beta stability, a 2D view zoomed in between mass 40 and 80 nuclei, same
region with a view down the middle of the valley of stability.
Ion-decay correlation
This
movie describes the concept of correlating an implanted ion with its
subsequent decay. First the radioactive ion (red sphere) is
implanted into a certain pixel of a Double-sided Silicon Strip
Detector (DSSD, silver square). After some time has passed the ion decays
(turns green) and emits a particle (blue sphere) and a gamma ray. Both the recoiling
daughter nucleus and the emitted particle are stopped in the same pixel of
the DSSD (for illustration the recoil of the nucleus has been grossly
exaggerated). Based on both the position information obtained from the
pixels of the DSSD and the time between the ion implantation into
the DSSD and the ion decay the correlated with each other. The passage of
time is indicated by the yellow circle in the lower right of the
animation.
correlation.avi
Charge collection inside a DSSD
This is a schematic
description of the charge collection inside one pixel of a DSSD. The
front and back strips of the DSSD are represented by the extended yellow
lines. The intersection of these strips defines a pixel in the DSSD. In
the animation you will see a particle start in the lower left corner of
the DSSD and travel to the upper right. Along its path electron(green)/hole(blue)
pairs are created in the material. These charge carriers are swept to
their respective sides of the DSSD due to the electric field. Electrons
are swept to the left and holes are swept to the right. The mobility of
the electroncs is higher than that of the holes and are thus collected quicker.
correlation.avi
