Iron in the sun: A greenhouse gas for X-ray radiation

Iron in the sun: A greenhouse gas for X-ray radiation

Scientists have investigated for the first time X-ray absorption of highly charged iron ions. A transportable ion trap developed at MPIK was used for generation and storage of the ions. The high-precision measurements provide important new insight into the role of highly charged ions in astrophysical plasmas, e. g. for radiation transport inside stars.

via ScienceDaily: Top Science News:

Sep. 6, 2013 — Scientists from the Heidelberg Max Planck Institute for Nuclear Physics (MPIK) in cooperation with DESY (Hamburg) at the synchrotron PETRA III have investigated for the first time X-ray absorption of highly charged iron ions. A transportable ion trap developed at MPIK was used for generation and storage of the ions. The high-precision measurements provide important new insight into the role of highly charged ions in astrophysical plasmas, e. g. for radiation transport inside stars.Highly charged ions — that is, atoms which have been stripped off most of their electrons — play an important role in astrophysics. Within the large accumulations of visible (luminous) matter in the universe, the highly charged state is the natural one. This is the case in stellar atmospheres as well as in the interior of stars, where temperatures of several million degrees Celsius rule. Highly charged ions also abound around exotic objects such as neutron stars or black holes. Before matter plunges into their cores, it delivers gravitational energy, heating up and emitting extremely intense X-rays, which can be observed.X-rays also determine the energy transport inside the Sun. …

For more info: Iron in the sun: A greenhouse gas for X-ray radiation

ScienceDaily: Top Science News

Iron in the sun: A greenhouse gas for X-ray radiation

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