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Stored and Cooled Ions Division
Max Planck SocietyMax Planck Institute for Nuclear PhysicsUniversity of Heidelberg Stored and Cooled Ions Division
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Tel.: +49 6221 516-851
Fax: +49 6221 516-852
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Max Planck Institute for Nuclear Physics
P.O. Box 10 39 80
69029 Heidelberg
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Building: Gentner lab,
room 134
69117 Heidelberg



First storage-ring measurement of the decay of a hydrogen-like isomer
Heavy mid-shell nuclei are understood to be favorable for the existence of high-energy, long-lived isomers that often decay via either internal conversion or γ decay ... >


Robert Wolf receives two dissertation awards
Our division member Dr. Robert Wolf has been selected to receive the Wolfgang-Paul-Dissertation-Prize 2014. The German Society for Mass Spectrometry (DGMS) is presenting every year the Wolfgang-Paul-Prize for Student Research ... >


TSR@ISOLDE Workshop 2015
April 27-28, 2015
CERN, Geneva, Switzerland ... >
Thurs., April 30, 2015, 11:15, Otto Hahn lecture hall ... >
Special Seminar
Friday, 08 May 2015, 10:00-11:00, Seminar room Blaum ... >


Mandatory master seminar "Modern Experiments in AMO"
Tue., 28. Apr. 2015, 16:15, INF 227 / SR 3.403 ... >
Advanced seminar "Stored and Cooled Ions"
Wed., 06. May 2015, 15:00, Seminar Room Blaum ... >
Ring Lecture AMO Physics in Heidelberg
Fri., 08. May 2015, 14:15, INF 227 / SR 2.402 ... >


Welcome to the homepage of the Stored and Cooled Ions Division
Director: Prof. Dr. Klaus Blaum

  • A Penning trap for precision mass measurements
  • An ion with only one electron stored in a cylindrical Penning trap
  • 7 T superconducting magnet for PENTATRAP
  • A liquid-nitrogen-cooled GaAs photocathode producing electron beams with internal temperatures down to 10 K
  • View onto the CSR in November 2013
  • Profile of the first beam of argon ions in the not yet cooled CSR on March 17, 2014
  • The cryogenic ion trap used as a prototype for the CSR

The experimental working group of the division is concerned with precision experiments on stored and cooled ions as well as with the investigation of fundamental processes of molecular ions. For this purpose short-lived radionuclides, highly-charged ions or simple molecular ions are trapped in Penning traps and storage rings under conditions as they also occur in space. Another main research field of the division is the development of novel storage, cooling and detection techniques for future experiments.