2002 Fiscal Year Final Research Report Summary

Absorption linewidth measurement of reactive molecular electrinic states by nonlinear optical spectroscopy.

Research Project

Project/Area Number	13640520
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Physical chemistry
Research Institution	The Institute of Physical and Chemical Research
Principal Investigator	KOBAYASHI Tohru Condensed Molecular Materials Lab. , Senior Researcher, 分子物性化学研究室, 先任研究員 (70202067)
Co-Investigator(Kenkyū-buntansha)	MATSUO Yukari RI Beam Science Lab. , Senior Researcher, RIビーム科学研究室, 先任研究員 (50231593)
Project Period (FY)	2001 – 2002
Keywords	pulse amplification / high resolution laser / second harmonic / linewidth / molecular dynamics / ablation
Research Abstract	We have produced high resolution UV light of 200MHz linewidth by a pulse anplification of the output of a CW Ti : Sapphire laser with a XeCl excimer laser conbined with a second harmonic crystal. The linewidth is only one fifth of the commercial pulsed dye laser and it will be highly effective for the precise linewidth measurement of absorption spectra. By using this UV light, we have measured Doppler linewidth of the absorption spectra of SiO^+ produced by laser ablation under oxygen atmosphere in order to investigate translational motion of ion in expanding ablation plasma. From the analysis, we have reproduced oscillation of ablation plasma which was expected from theoretical calculation. We are going to use this system for the spectroscopic study of reactive electronic states.

(2 results)