A Continuous Coherent Lyman-alpha source for Antihydrogen Experiments

by Jochen Walz (CERN-EP)

Monday 18 Jun 2001, 16:30 → 17:30 Europe/Zurich

500/1-001 - Main Auditorium (CERN)

Two experiments, ATRAP and ATHENA are now underway at CERN's new antiproton decelerator AD with the goal to produce and to investigate cold antihydrogen atoms. Both experiments aim to make an extremely precise test of CPT symmetry and will possibly investigate antimatter gravity. Laser cooling of antihydrogen atoms will play a pivotal role in these experiments. The 1S-2P transition of antihydrogen is the only transition suitable for efficient laser cooling and fluorescence detection. This seminar will review the first source of continuous wave coherent radiation at the required wavelength of 121.6nm (Lyman-alpha). Using this source the 1S-2P transition in atomic hydrogen has recently been observed for the first time with almost natural linewidth.

Organiser(s): Ariane Frey / EP Division

Note: Tea & coffee will be served at 16.00 hrs.