Heaven on Earth

نویسنده

  • Andreas Wolf
چکیده

T he Test Storage Ring (TSR) has been in operation at the Max Planck Institute for Nuclear Physics for some 20 years now. It is a racetrack of sorts, with a 55-meter circumference, on which charged particles race around, guided by magnets. Compared with its big brothers, such as the new super-accelerator LHC at the European particle physics lab in Geneva, the TSR is quite modest. But by no means is it ready for the scrap pile yet – quite the contrary. Equipped with sophisticated technology, the apparatus continues to deliver excellent measurement data. A few years ago, for instance, physicists in Heidelberg used the storage ring to test Einstein’s theory of relativity with unparalleled precision (MAXPLANCKRESEARCH 2/2004, page 20 ff.). And for Andreas Wolf’s research group, the TSR has also been serving a very different purpose for several years: the study of chemical and physical reactions that lead to the formation of molecules in space. The most productive chemistry labs in space are giant clouds composed of gas and dust. In photos, they make a very dense impression: they appear to be impenetrable, and attenuate the light of stars located behind them. Nevertheless, with an average of 10,000 particles per cubic centimeter, the densities are much lower than in a cleanroom lab on Earth. It is the clouds’ enormous expanse of several light-years that makes them opaque to light.

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تاریخ انتشار 2010