TY - GEN
T1 - High-brightness cm-1-resolution threshold photoelectron spectroscopic technique
AU - Kimura, Katsumi
AU - Takahashi, Masahiko
PY - 1992/1/1
Y1 - 1992/1/1
N2 - We first describe some characteristics of our compact photoelectron analyzers capable of high- resolution (1 - 2 cm-1) cation spectroscopy of molecules in two-color (approximately ega 1, approximately ega2) laser experiments of resonantly enhanced multiphoton ionization. Threshold ionization photoelectrons lower than a few cm-1 are collected as a function of approximately ega2 by applying a pulsed electric field at 500 ns at each laser shot, while energetic photoelectrons are removed by angular- and time-resolved discrimination. Second, we demonstrate a rotational spectrum due to NO+ obtained by this technique to examine our energy resolution. Third, we mention a few examples of low-frequency vibrational spectra of cation radicals: (1) rotational isomers, (2) Ar-NO van der Waals complex, and (3) aniline- Arn complexes (n = 1,2).
AB - We first describe some characteristics of our compact photoelectron analyzers capable of high- resolution (1 - 2 cm-1) cation spectroscopy of molecules in two-color (approximately ega 1, approximately ega2) laser experiments of resonantly enhanced multiphoton ionization. Threshold ionization photoelectrons lower than a few cm-1 are collected as a function of approximately ega2 by applying a pulsed electric field at 500 ns at each laser shot, while energetic photoelectrons are removed by angular- and time-resolved discrimination. Second, we demonstrate a rotational spectrum due to NO+ obtained by this technique to examine our energy resolution. Third, we mention a few examples of low-frequency vibrational spectra of cation radicals: (1) rotational isomers, (2) Ar-NO van der Waals complex, and (3) aniline- Arn complexes (n = 1,2).
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M3 - Conference contribution
AN - SCOPUS:0026464252
SN - 0819407844
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 216
EP - 227
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Publ by Int Soc for Optical Engineering
T2 - Optical Methods for Time- and State-Resolved Chemistry
Y2 - 23 January 1992 through 25 January 1992
ER -