2000 Fiscal Year Final Research Report Summary
The Dynamics of Molecules in Very Large Electron Orbital
| Project/Area Number |
11640520
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | HOKKAIDO UNIVERSITY (2000)
Okazaki National Research Institutes (1999) |
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Principal Investigator |
SATO Shin-ichiro Hokkaido Univ, Grad. School of Eng., Asso. Prof., 大学院・工学研究科, 助教授 (10262601)
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| Project Period (FY) |
1999 – 2000
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| Keywords | dynamics / electron / orbital / Rydberg / quantum / ZEKE / ionization / pulse |
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| Research Abstract |
The dynamics of molecules in very large electron orbitals is of interest since those molecules can be accessible with the zero kinetic energy (ZEKE) electron spectroscopy recently. The very large electron orbital is created by the resonant multi-photon laser excitation of the molecule to the very high-lying Rydberg states with high principal quantum numbers (n>100). The very high-lying Rydberg states is easily ionized with a weak pulsed electric field and can be detected electron multiplier. The lifetimes of the very high-lying Rydberg states were measured to be in the range of tens of microseconds, which are extraordinarily longer than the simple n^3 extrapolation of the lifetimes of the lower lying Rydberg states. This fact requires some dynamics that is unique to the molecules in very large electron orbital. We developed a novel sweep-off-probe time resolved two pulsed field ionization apparatus, and obtained the evidence showing the vibronic coupling between Rydberg electron and ion-core molecular vibrations.
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