2006/10/06 by Michel Lintz, Jocelyne Guéna, Marie-Anne Bouchiat · 1 citation
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Molecular Physics #Atomic and Subatomic Physics Research #physics.atom-ph #physics.gen-ph
paper · pdf · doi:10.1140/epja/i2006-10433-9
published as European Physical Journal A 32, 4 (25/07/2007) 525-529 · "conference PAVI 06, Milos, Greece, May 2006"
arxiv created 2006/10/06 · openalex publication_date 2007/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present the atomic parity violation measurements made in Cs vapour using a pump-probe scheme. After pulsed excitation of the 6S-7S forbidden transition in the presence of a longitudinal electric field, a laser beam resonant with one of the 7S-6P transitions stimulates the 7S atom emission for a duration of 20 ns. The polarisation of the amplified probe beam is analysed. A seven-fold signature allows discrimination of the parity violating linear dichroism, and real-time calibration by a similar, known, parity conserving linear dichroism. The zero-field linear dichroism signal due to the magnetic dipole transition moment is observed for the first time, and used for in-situ determination of the electric field. The result, ImE1pv= (-808+/- 21) 10-14 ea_0, is in perfect agreement with the corresponding, more precise measurement obtained by the Boulder group. A transverse field configuration with large probe amplification could bring atomic parity violation measurements to the 0.1% accuracy level.