Laser spectroscopy ofin an online ion trap
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Radioactive beryllium isotope ions (Be+7 and Be+10) that are provided by a projectile fragment separator with 1 GeV beams, as well as stable isotope ions (Be+9) are stored and laser cooled in an online ion trap. Their absolute transition energies of the 2s S 1/2 2 2p P 3/2 2 transition were measured with an accuracy of 10-8. In this way isotope shifts of beryllium ions were obtained and the differential mass polarization parameter =-0.28641 (70) a.u. as well as the 2s S2 2p P2 transition energy of an infinitely heavy beryllium ion h =0.145524290 (42) a.u. were determined for the first time. 2006 The American Physical Society.
author list (cited authors)
Nakamura, T., Wada, M., Okada, K., Takamine, A., Ishida, Y., Yamazaki, Y., ... Schuessler, H. A.