| 1. |
- Furukawa, T., et al.
(författare)
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Cooling dynamics of photo-excited negative carbon cluster ions stored in an ion storage ring
- 2015
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Ingår i: Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms. - : Elsevier BV. - 0168-583X. ; 354, s. 192-196
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Tidskriftsartikel (refereegranskat)abstract
- A newly found fast radiative cooling process of C-6(-) is studied by simulation based on statistical sharing of the internal energy by the vibrational modes both in the electronic ground and excited states. For comparison, a contrasting slow cooling of C6H- is simulated by the same procedure. The simulation demonstrates a distinct difference in the time evolution of energy distributions between C-6(-) and C6H-, and well reproduces the observed fast cooling of C-6(-) by recurrent electronic transitions and the slow cooling of C6H- by vibrational de-excitation. (C) 2014 Elsevier B.V. All rights reserved.
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| 2. |
- Ito, G., et al.
(författare)
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Cooling Dynamics of Photoexcited C6 − and C6H−
- 2014
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 112
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Tidskriftsartikel (refereegranskat)abstract
- We report conclusive evidence of an efficient cooling mechanism via the electronic radiative transitions of hot small molecular anions isolated in vacuum. We stored C6− and C6H− in an ion storage ring and observed laser-induced electron detachment with delays up to several milliseconds. The terminal hydrogen atom caused a drastic change in the decay profiles. The decay of hotoexcited C6H− is slow and nonexponential, which can be explained by depletion cooling, whereas that for C6− occurs extremely fast, on a time scale below 0.1 ms and can only be explained by electronic radiative cooling via low-lying electronic excited states.
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| 3. |
- Shiromaru, H., et al.
(författare)
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Cooling dynamics of carbon cluster anions
- 2015
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Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6596 .- 1742-6588. ; 635
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Tidskriftsartikel (refereegranskat)abstract
- A series of ion storage experiments on small carbon cluster anions was conducted to understand size-dependent cooling processes. The laser-induced delayed electron detachment time profile show clear even/odd alternation due to the presence of the electronic cooling. The time evolution of the internal energy distribution was simulated for Cn- (n=4 to 7) with a common procedure taking vibrational and electronic cooling into account.
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| 4. |
- Saito, M., et al.
(författare)
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Photodissociation of orange i monoanion studied using an electrostatic storage ring
- 2017
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Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 875:4
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Konferensbidrag (refereegranskat)abstract
- Photodissociation of gas-phase orange I monoanions was studied by using an electrostatic storage ring. By comparing their wavelength spectra with those in the liquid phase and with theoretical predictions, it is deduced that the spectra originate from different tautomers of orange I monoanions.
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