Journal Article

PUBDB-2022-01010

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ultrafast dynamics of adenine following XUV ionization

Maansson, E.DESY* ; Latini, S.CFEL*MPG* ; Covito, F.MPG* ; Wanie, V.CFEL*DESY* ; Galli, M.CFEL*Extern* ; Perfetto, E. ; Stefanucci, G. ; De Giovannini, U.CFEL*MPG* ; Castrovilli, M. C.Extern*XFEL.EU* ; Trabattoni, A.DESY* ; Frassetto, F.Extern* ; Greenwood, J. B. ; Légaré, F. ; Nisoli, M. ; Rubio, A.CFEL*MPG* ; Calegari, F. (Corresponding author)DESY*

2022
IOP Publishing Bristol

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Please use a persistent id in citations: doi:10.1088/2515-7647/ac6ea5  doi:10.3204/PUBDB-2022-01010

Abstract: The dynamics of biologically relevant molecules exposed to ionizing radiation contains many facets and spans several orders of magnitude in time and energy. In the extreme ultraviolet (XUV) spectral range, multi-electronic phenomena and bands of correlated states with inner-valence holes must be accounted for in addition to a plethora of vibrational modes and available dissociation channels. The ability to track changes in charge density and bond length during ultrafast reactions is an important endeavor toward more general abilities to simulate and control photochemical processes, possibly inspired by those that have evolved biologically. By using attosecond XUV pulses extending up to 35 eV and few-femtosecond near-infrared pulses, we have previously time-resolved correlated electronic dynamics and charge migration occurring in the biologically relevant molecule adenine after XUV-induced sudden ionization. Here, using additional experimental data, we comprehensively report on both electronic and vibrational dynamics of this nucleobase in an energy range little explored to date with high temporal resolution. The time-dependent yields of parent and fragment ions in the mass spectra are analyzed to extract exponential time constants and oscillation periods. Together with time-dependent density functional theory and ab-initio Green's function methods, we identify different vibrational and electronic processes. Beyond providing further insights into the XUV-induced dynamics of an important nucleobase, our work demonstrates that yields of specific dissociation outcomes can be influenced by sufficiently well-timed ultrashort pulses, therefore providing a new route for the control of the multi-electronic and dissociative dynamics of a DNA building block.

Note: The article is Open Access so I don't upload the publisher's PDF here.HAllo zusammen in L, finde das ist ok, ich verstehe auch nicht so richtig, warum bei OPen Access die PDFs mit hochgeladen werden müssen. VG Daniela

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Contributing Institute(s):

1. Attosecond Science and Technology (FS-ATTO)
2. MPSD (CFEL-MPT)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. STARLIGHT - Steering attosecond electron dynamics in biomolecules with UV-XUV LIGHT pulses (637756) (637756)
3. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
4. QSpec-NewMat - Quantum Spectroscopy: exploring new states of matter out of equilibrium (694097) (694097)
5. CoExAN - Collective Excitations in Advanced Nanostructures (644076) (644076)
6. MaX - MAterials design at the eXascale. European Centre of Excellence in materials modelling, simulations, and design (824143) (824143)
7. DFG project 170620586 - SFB 925: Licht-induzierte Dynamik und Kontrolle korrelierter Quantensysteme (170620586) (170620586)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2022

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Database coverage:
; ; ; Article Processing Charges ; DOAJ Seal ; Fees ; NCBI Molecular Biology Database

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