Pump-probe studies of autoionizing states of noble gases combining laser and synchrotron radiation—The nf′ Rydberg states of neon

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• 作者：Angelica Moise ; Michele Alagia ; Luca Banchi ; Mario Ferianis ; Kevin C. Prince ; Robert Richter
• 关键词：Two-color experiments ; Laser and synchrotron radiation ; Autoionization
• 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
• 出版年：2008
• 期刊代码：41_01689002
• 类别：ph
• 出版时间：11 April 2008
• 卷：588
• 期：3
• 页码：502-508
• 文件大小：505 K

摘要

A mode-locked tunable Ti:Sapphire oscillator has been synchronized with the time structure of a storage ring and used to study the photoionization of noble gases. In multi-bunch operation of the ring the setup permits the observation of the dynamics from a few nanoseconds down to the tens of picoseconds range. The characteristics of the setup are demonstrated by following the two-color ionization of helium (via the 1s3p ¹P^o state) and argon (via the 3p⁵ (²P_3/2) 3d state). In the CW mode we have also examined the two-color ionization of neon via the 2p⁵ (²P_1/2) 3d′ state. In neon the nf′ Rydberg series was followed up to n50, and the quantum defect was determined.