Observation of a laser-induced structure in the ionization continuum of sodium atoms using photoelectron energy spectroscopy

Year: 1997

Authors: Eramo R., Cavalieri S., Fini L., Matera M., DiMauro L. F.

Autors Affiliation: Dipartimento di Fisica, Europ. Lab. for Non-Lin. Spectrosc., Università di Firenze, Largo E Fermi 2, I-50125 Firenze, Italy; Istituto di Elettronica Quantistica, Consiglio Nazionale Delle Ricerche, Via Panciatichi 56/30, I-50127 Firenze, Italy; Department of Chemistry, Brookhaven National Laboratory, Upton, NY 11973, United States

Abstract: We report an experimental analysis of a structure induced by a Nd:YAG laser embedding the sodium 5S1/2 excited state in the ionization continuum. The induced structure is probed from the ground state via a one-photon ionization. The experiment is performed on an atomic beam apparatus which uses a time-of-flight spectrometer for energy analysing the emitted photoelectrons. The selectivity of this technique provides the best measurement of a laser-induced resonance in the photoionization spectrum reported to date. A good agreement is found between the theory and experimental results.

Journal/Review: JOURNAL OF PHYSICS PART B ATOMIC AND MOLECULAR PHYSICS

Volume: 30 (17)      Pages from: 3789  to: 3796

KeyWords: Atomic beams; Electron energy levels; Laser beam effects; Neodymium lasers; Photoelectron spectroscopy; Resonance; Sodium; Spectrometers, Laser induced continuum structure (LICS); Time of flight spectrometer, Photoionization
DOI: 10.1088/0953-4075/30/17/009

Citations: 37
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