Project/Area Number |
09640475
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Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
物理学一般
|
Research Institution | University of Tsukuba |
Principal Investigator |
MORIOKA Yumio University of Tsukuba, Institute of Physics, Associated Professor, 物理学系, 助教授 (40015805)
|
Co-Investigator(Kenkyū-buntansha) |
HAYAISHI Tatsuji University of Tsukuba, Institute of Applied Physics, Associated Professor, 物理工学系, 助教授 (50015757)
|
Project Period (FY) |
1997 – 2000
|
Project Status |
Completed (Fiscal Year 2000)
|
Budget Amount *help |
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2000: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥2,000,000 (Direct Cost: ¥2,000,000)
|
Keywords | atmospheric molecule / photoelectron / threshold electron / potential / vibrational spectrum / rare gas molecule / ZEKE / coincidence / ZEKE |
Research Abstract |
O_2 and N_2 occupy a large part of the earth's atmosphere. The relationship between human beings and these molecules will continue until human beings cease to exist. Therefore, exact information on the energy levels and physical constants of these molecules and ions will become absolutely necessary for the long-term survival of the human race. There are many investigations of the energy levels of these ions, which have been predicted theoretically. However, there are many unobserved electronic states and energy levels because transitions to the electronic state from the ground state are forbidden and so forth, though these are predicted theoretically. In the upper atmosphere, these molecules have interactions with solar rays and ionize and dissociate. Generated ions and fragments remain in the upper atmosphere and undergo various reactions with other atoms and molecules. To analyze these reactions, it is necessary to obtain the potential energy curves of the molecules vibrational and rotational energies of the ions. (Results) Many states of O_2 and N_2 ions were observed and analyzed. Most of the observed states were new. With pulse-field-method we obtained higher resolution photoelectron spectra of N_2 which is resolved rotationally. We obtained vibrational resolved spectra of the rare gas dimers though that molecules will not exist in the earth atmosphere.
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