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Beryllium-7 and solar activity.

C Papastefanou1, A Ioannidou

  • 1Physics Department, Nuclear Physics and Elementary Particle Physics Division, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece. papstefanou@physics.auth.gr

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|September 25, 2004
PubMed
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A very low concentration of beryllium-7 (7Be) was detected in Thessaloniki, Greece air following a significant solar wind event. This observation links solar activity to atmospheric radionuclide levels in the region.

Area of Science:

  • Environmental Science
  • Atmospheric Physics
  • Nuclear Chemistry

Background:

  • Beryllium-7 (7Be) is a cosmogenic radionuclide.
  • Solar wind events can influence Earth's atmospheric composition.
  • Radionuclide monitoring is crucial for understanding atmospheric transport.

Purpose of the Study:

  • To report the detection of beryllium-7 (7Be) in ambient air.
  • To correlate atmospheric radionuclide levels with a specific solar wind event.
  • To investigate the impact of solar activity on air quality in Northern Greece.

Main Methods:

  • Air sampling in Thessaloniki, Northern Greece.
  • Measurement of radionuclide concentrations using gamma-ray spectrometry.
  • Analysis of solar wind event data.

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Main Results:

  • A very low concentration of beryllium-7 (7Be) was recorded on November 9, 2003.
  • The detection followed a strong solar wind event on October 29, 2003.
  • The findings suggest a link between solar wind activity and atmospheric 7Be levels.

Conclusions:

  • Solar wind events can lead to detectable levels of cosmogenic radionuclides in the lower atmosphere.
  • Atmospheric radionuclide monitoring can serve as an indicator of space weather impacts.
  • Further research is needed to quantify the transport mechanisms of 7Be from solar events.