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High-resolution x-r...
High-resolution x-ray spectra of carbon monoxide reveal ultrafast dynamics induced by long UV pulse
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- Liu, Ji-Cai (författare)
- North China Elect Power Univ, Dept Math & Phys, Beijing 102206, Peoples R China.
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- Savchenko, Viktoriia (författare)
- KTH,Teoretisk kemi och biologi,Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
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- Kimberg, Victor, 1973- (författare)
- KTH,Teoretisk kemi och biologi,Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
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- Gel'mukhanov, Faris (författare)
- KTH,Teoretisk kemi och biologi,Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.;Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.;Helmholtz Zentrum Berlin Mat & Energie, Inst Methods & Instrumentat Synchrotron Radiat Re, Albert Einstein Str 15, D-12489 Berlin, Germany.
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- Odelius, Michael (författare)
- Stockholms universitet,Fysikum,Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.
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North China Elect Power Univ, Dept Math & Phys, Beijing 102206, Peoples R China Teoretisk kemi och biologi (creator_code:org_t)
- 2021-06-11
- 2021
- Engelska.
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Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 23:6
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- In theoretical simulations of a UV + x-ray pump-probe (UVX-PP) setup, we show that frequency detuning of the pump UV pulse acts as a camera shutter by regulating the duration of the UVX-PP process. This two-photon absorption with long overlapping UV and x-ray pulses, allowing for high spectral resolution, thereby provides information about ultrafast dynamics of the nuclear wave packet without the requirement of ultrashort pulses and controlled delay times. In a case study of carbon monoxide, the calculated UVX-PP spectra of the O1s (-1)2 pi (1) and C1s (-1)2 pi (1) core-excited states show different vibrational profiles. The interference of intermediate vibrational states reveals details of nuclear dynamics in the UVX-PP process related to a variable duration time controlled by the UV detuning. Both O1s (-1)2 pi (1) and C1s (-1)2 pi (1) pump-probe channels display a splitting of the spectral profile, which however is associated with different physical mechanisms. At the O1s (-1)2 pi (1) resonance, the observed dispersive and non-dispersive spectral bands intersect and result in destructive interference.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- UV pump-x-ray probe
- molecular spectroscopy
- ultrafast dynamics
- potential energy surfaces
- x-ray absorption
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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