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Rana M, Ghosh A. Full Dynamical and Ab Initio Investigation of the Electron Transfer-Mediated Decay Mechanism of He + in the Presence of Heavier Alkali Dimers. J Phys Chem A 2024; 128:1973-1983. [PMID: 38447163 DOI: 10.1021/acs.jpca.3c07115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
We have studied the electron transfer-mediated decay (ETMD) process for the 1s ionized state of the He atom in the presence of a heavier alkali homonuclear dimer (Na2, K2, and Rb2) as well as heteronuclear dimer (LiNa, NaK, and KRb). In our computation, we have considered all the alkali dimers being in the singlet electronic ground state. The electron transfer from the alkali dimer to He (1s-1) leads to the emission of another electron from the alkali dimer into the continuum. We have investigated the impact of the distance of the He atom from the center of mass of the alkali dimer on the ETMD decay width. We also performed the Born-Oppenheimer molecular dynamics simulation to understand the impact of nuclear dynamics on the ETMD process.
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Affiliation(s)
- Meenakshi Rana
- Department of Chemistry, Ashoka University, Sonipat, Haryana 131029, India
| | - Aryya Ghosh
- Department of Chemistry, Ashoka University, Sonipat, Haryana 131029, India
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2
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De S, Abid AR, Asmussen JD, Ben Ltaief L, Sishodia K, Ulmer A, Pedersen HB, Krishnan SR, Mudrich M. Fragmentation of water clusters formed in helium nanodroplets by charge transfer and Penning ionization. J Chem Phys 2024; 160:094308. [PMID: 38445733 DOI: 10.1063/5.0194098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 02/16/2024] [Indexed: 03/07/2024] Open
Abstract
Helium nanodroplets ("HNDs") are widely used for forming tailor-made clusters and molecular complexes in a cold, transparent, and weakly interacting matrix. The characterization of embedded species by mass spectrometry is often complicated by the fragmentation and trapping of ions in the HNDs. Here, we systematically study fragment ion mass spectra of HND-aggregated water and oxygen clusters following their ionization by charge transfer ionization ("CTI") and Penning ionization ("PEI"). While the efficiency of PEI of embedded clusters is lower than for CTI by about factor 10, both the mean sizes of detected water clusters and the relative yields of unprotonated cluster ions are significantly larger, making PEI a "soft ionization" scheme. However, the tendency of ions to remain bound to HNDs leads to a reduced detection efficiency for large HNDs containing >104 helium atoms. These results are instrumental in determining optimal conditions for mass spectrometry and photoionization spectroscopy of molecular complexes and clusters aggregated in HNDs.
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Affiliation(s)
- S De
- Quantum Center of Excellence for Diamond and Emergent Materials and Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
| | - A R Abid
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - J D Asmussen
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - L Ben Ltaief
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - K Sishodia
- Quantum Center of Excellence for Diamond and Emergent Materials and Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
| | - A Ulmer
- Department of Physics, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - H B Pedersen
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
| | - S R Krishnan
- Quantum Center of Excellence for Diamond and Emergent Materials and Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India
| | - M Mudrich
- Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark
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3
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Yan S, Zhang RT, Xu S, Zhang SF, Ma X. Molecular Ionization Dissociation Induced by Interatomic Coulombic Decay in an ArCH_{4}-Electron Collision System. PHYSICAL REVIEW LETTERS 2023; 131:253001. [PMID: 38181359 DOI: 10.1103/physrevlett.131.253001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/11/2023] [Accepted: 11/15/2023] [Indexed: 01/07/2024]
Abstract
Interatomic Coulombic decay (ICD) is a significant fragmentation mechanism observed in weakly bound systems. It has been widely accepted that ICD-induced molecular fragmentation occurs through a two-step process, involving ICD as the first step and dissociative-electron attachment (DEA) as the second step. In this study, we conducted a fragmentation experiment of ArCH_{4} by electron impact, utilizing the coincident detection of one electron and two ions. In addition to the well-known decay pathway that induces pure ionization of CH_{4}, we observed a new channel where ICD triggers the ionization dissociation of CH_{4}, resulting in the cleavage of the C-H bond and the formation of the CH_{3}^{+} and H ion pair. The high efficiency of this channel, as indicated by the relative yield of the Ar^{+}/CH_{3}^{+} ion pair, agrees with the theoretical prediction [L. S. Cederbaum, J. Phys. Chem. Lett. 11, 8964 (2020).JPCLCD1948-718510.1021/acs.jpclett.0c02259; Y. C. Chiang et al., Phys. Rev. A 100, 052701 (2019).PLRAAN2469-992610.1103/PhysRevA.100.052701]. These results suggest that ICD can directly break covalent bonds with high efficiency, bypassing the need for DEA. This finding introduces a novel approach to enhance the fragmentation efficiency of molecules containing covalent bonds, such as DNA backbone.
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Affiliation(s)
- S Yan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R T Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S Xu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S F Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China and School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Gopakumar G, Unger I, Slavíček P, Hergenhahn U, Öhrwall G, Malerz S, Céolin D, Trinter F, Winter B, Wilkinson I, Caleman C, Muchová E, Björneholm O. Radiation damage by extensive local water ionization from two-step electron-transfer-mediated decay of solvated ions. Nat Chem 2023; 15:1408-1414. [PMID: 37620544 PMCID: PMC10533389 DOI: 10.1038/s41557-023-01302-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 07/21/2023] [Indexed: 08/26/2023]
Abstract
Biomolecular radiation damage is largely mediated by radicals and low-energy electrons formed by water ionization rather than by direct ionization of biomolecules. It was speculated that such an extensive, localized water ionization can be caused by ultrafast processes following excitation by core-level ionization of hydrated metal ions. In this model, ions relax via a cascade of local Auger-Meitner and, importantly, non-local charge- and energy-transfer processes involving the water environment. Here, we experimentally and theoretically show that, for solvated paradigmatic intermediate-mass Al3+ ions, electronic relaxation involves two sequential solute-solvent electron transfer-mediated decay processes. The electron transfer-mediated decay steps correspond to sequential relaxation from Al5+ to Al3+ accompanied by formation of four ionized water molecules and two low-energy electrons. Such charge multiplication and the generated highly reactive species are expected to initiate cascades of radical reactions.
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Affiliation(s)
- G Gopakumar
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
| | - I Unger
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
- FS-BIG, DESY, Hamburg, Germany
| | - P Slavíček
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Czech Republic
| | - U Hergenhahn
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - G Öhrwall
- MAX IV Laboratory, Lund University, Lund, Sweden
| | - S Malerz
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - D Céolin
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, Paris, France
| | - F Trinter
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
- Institut für Kernphysik, Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
| | - B Winter
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
| | - I Wilkinson
- Institute for Electronic Structure Dynamics, Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
| | - C Caleman
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
- Center for Free-Electron Laser Science, DESY, Hamburg, Germany
| | - E Muchová
- Department of Physical Chemistry, University of Chemistry and Technology, Prague, Czech Republic.
| | - O Björneholm
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden.
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5
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Zhou J, Jia S, Hu X, Wang E, Xue X, Wu Y, Wang J, Dorn A, Ren X. Intermolecular Charge Transfer Induced Fragmentation of Formic Acid Dimers. PHYSICAL REVIEW LETTERS 2023; 130:233001. [PMID: 37354420 DOI: 10.1103/physrevlett.130.233001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 01/19/2023] [Accepted: 04/20/2023] [Indexed: 06/26/2023]
Abstract
We investigate the intermolecular nonradiative charge transfer process in a double hydrogen-bonded formic acid (FA) dimer, initiated by electron-collision induced double ionization of one FA molecule. Through fragment ions and electron coincident momentum measurements and ab initio calculations, we obtain direct evidence that electron transfer from the neighboring FA molecule to fill one of the two vacancies occurs by a potential energy curve crossing of FA^{++}+FA with FA^{+}+FA^{+*} curves, forming an electronic excited state of dicationic dimers. This process causes the breaking of two hydrogen bonds and subsequently the cleavage of C─H and C─O covalent bonds in the dimers, which is expected to be a general phenomenon occurring in molecular complexes and can have important implications for radiation damage to biological matter.
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Affiliation(s)
- Jiaqi Zhou
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shaokui Jia
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiaoqing Hu
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Enliang Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiaorui Xue
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yong Wu
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Jianguo Wang
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - Alexander Dorn
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Xueguang Ren
- School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
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6
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Li WB, Stangl S, Klapproth A, Shevtsov M, Hernandez A, Kimm MA, Schuemann J, Qiu R, Michalke B, Bernal MA, Li J, Hürkamp K, Zhang Y, Multhoff G. Application of High-Z Gold Nanoparticles in Targeted Cancer Radiotherapy-Pharmacokinetic Modeling, Monte Carlo Simulation and Radiobiological Effect Modeling. Cancers (Basel) 2021; 13:5370. [PMID: 34771534 PMCID: PMC8582555 DOI: 10.3390/cancers13215370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 02/05/2023] Open
Abstract
High-Z gold nanoparticles (AuNPs) conjugated to a targeting antibody can help to improve tumor control in radiotherapy while simultaneously minimizing radiotoxicity to adjacent healthy tissue. This paper summarizes the main findings of a joint research program which applied AuNP-conjugates in preclinical modeling of radiotherapy at the Klinikum rechts der Isar, Technical University of Munich and Helmholtz Zentrum München. A pharmacokinetic model of superparamagnetic iron oxide nanoparticles was developed in preparation for a model simulating the uptake and distribution of AuNPs in mice. Multi-scale Monte Carlo simulations were performed on a single AuNP and multiple AuNPs in tumor cells at cellular and molecular levels to determine enhancements in the radiation dose and generation of chemical radicals in close proximity to AuNPs. A biologically based mathematical model was developed to predict the biological response of AuNPs in radiation enhancement. Although simulations of a single AuNP demonstrated a clear dose enhancement, simulations relating to the generation of chemical radicals and the induction of DNA strand breaks induced by multiple AuNPs showed only a minor dose enhancement. The differences in the simulated enhancements at molecular and cellular levels indicate that further investigations are necessary to better understand the impact of the physical, chemical, and biological parameters in preclinical experimental settings prior to a translation of these AuNPs models into targeted cancer radiotherapy.
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Affiliation(s)
- Wei Bo Li
- Institute of Radiation Medicine, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.K.); (K.H.)
| | - Stefan Stangl
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
| | - Alexander Klapproth
- Institute of Radiation Medicine, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.K.); (K.H.)
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
| | - Maxim Shevtsov
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky Ave., 4, 194064 Saint Petersburg, Russia
| | - Alicia Hernandez
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
| | - Melanie A. Kimm
- Department of Diagnostic and Interventional Radiology, Technische Universität München (TUM), Klinikum Rechts der Isar, 81675 Munich, Germany;
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, 81337 Munich, Germany;
| | - Jan Schuemann
- Physics Division, Department of Radiation Oncology, Massachusetts General Hospital (MGH) & Harvard Medical School, Boston, MA 02114, USA;
| | - Rui Qiu
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
| | - Bernhard Michalke
- Research Unit Analytical BioGeoChemistry, Helmholz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany;
| | - Mario A. Bernal
- Gleb Wataghin Institute of Physics, State University of Campinas, Campinas 13083-859, SP, Brazil;
| | - Junli Li
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, 81337 Munich, Germany;
| | - Kerstin Hürkamp
- Institute of Radiation Medicine, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.K.); (K.H.)
| | - Yibao Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China;
| | - Gabriele Multhoff
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
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7
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Ghosh A, Cederbaum LS, Gokhberg K. Signature of the neighbor's quantum nuclear dynamics in the electron transfer mediated decay spectra. Chem Sci 2021; 12:9379-9385. [PMID: 34349910 PMCID: PMC8278904 DOI: 10.1039/d1sc01478a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/01/2021] [Indexed: 11/21/2022] Open
Abstract
We computed fully quantum nuclear dynamics, which accompanies electron transfer mediated decay (ETMD) in weakly bound polyatomic clusters. We considered two HeLi2 clusters - with Li2 being either in the singlet electronic ground state or in the triplet first excited state - in which ETMD takes place after ionization of He. The electron transfer from Li2 to He+ leads to the emission of another electron from Li2 into the continuum. Due to the weak binding of He to Li2 in the initial states of both clusters, the involved nuclear wavepackets are very extended. This makes both the calculation of their evolution and the interpretation of the results difficult. We showed that despite the highly delocalized nature of the wavepackets the nuclear dynamics in the decaying state is imprinted on the ETMD electron spectra. The analysis of the latter helps understanding the effect which electronic structure and binding strength in the cluster produce on the quantum motion of the nuclei in the decaying state. The results produce a detailed picture of this important charge transfer process in polyatomic systems.
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Affiliation(s)
- Aryya Ghosh
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg Im Neuenheimer Feld 229 D-69120 Heidelberg Germany .,Department of Chemistry, Ashoka University Sonipat India
| | - Lorenz S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg Im Neuenheimer Feld 229 D-69120 Heidelberg Germany
| | - Kirill Gokhberg
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg Im Neuenheimer Feld 229 D-69120 Heidelberg Germany
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8
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Jahnke T, Hergenhahn U, Winter B, Dörner R, Frühling U, Demekhin PV, Gokhberg K, Cederbaum LS, Ehresmann A, Knie A, Dreuw A. Interatomic and Intermolecular Coulombic Decay. Chem Rev 2020; 120:11295-11369. [PMID: 33035051 PMCID: PMC7596762 DOI: 10.1021/acs.chemrev.0c00106] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Indexed: 12/11/2022]
Abstract
Interatomic or intermolecular Coulombic decay (ICD) is a nonlocal electronic decay mechanism occurring in weakly bound matter. In an ICD process, energy released by electronic relaxation of an excited atom or molecule leads to ionization of a neighboring one via Coulombic electron interactions. ICD has been predicted theoretically in the mid nineties of the last century, and its existence has been confirmed experimentally approximately ten years later. Since then, a number of fundamental and applied aspects have been studied in this quickly growing field of research. This review provides an introduction to ICD and draws the connection to related energy transfer and ionization processes. The theoretical approaches for the description of ICD as well as the experimental techniques developed and employed for its investigation are described. The existing body of literature on experimental and theoretical studies of ICD processes in different atomic and molecular systems is reviewed.
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Affiliation(s)
- Till Jahnke
- Institut
für Kernphysik, Goethe Universität, Max-von-Laue-Str. 1, 60438 Frankfurt, Germany
| | - Uwe Hergenhahn
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
- Max
Planck Institute for Plasma Physics, Wendelsteinstr. 1, 17491 Greifswald, Germany
- Leibniz
Institute of Surface Engineering (IOM), 04318 Leipzig, Germany
| | - Bernd Winter
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Reinhard Dörner
- Institut
für Kernphysik, Goethe Universität, Max-von-Laue-Str. 1, 60438 Frankfurt, Germany
| | - Ulrike Frühling
- Institut
für Experimentalphysik and Center for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Philipp V. Demekhin
- Institut
für Physik und CINSaT, Universität
Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Kirill Gokhberg
- Physical-Chemistry
Institute, Ruprecht-Karls University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Lorenz S. Cederbaum
- Physical-Chemistry
Institute, Ruprecht-Karls University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Arno Ehresmann
- Institut
für Physik und CINSaT, Universität
Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - André Knie
- Institut
für Physik und CINSaT, Universität
Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
| | - Andreas Dreuw
- Interdisciplinary
Center for Scientific Computing, Ruprecht-Karls
University, Im Neuenheimer
Feld 205, 69120 Heidelberg, Germany
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9
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Li WB, Belchior A, Beuve M, Chen YZ, Di Maria S, Friedland W, Gervais B, Heide B, Hocine N, Ipatov A, Klapproth AP, Li CY, Li JL, Multhoff G, Poignant F, Qiu R, Rabus H, Rudek B, Schuemann J, Stangl S, Testa E, Villagrasa C, Xie WZ, Zhang YB. Intercomparison of dose enhancement ratio and secondary electron spectra for gold nanoparticles irradiated by X-rays calculated using multiple Monte Carlo simulation codes. Phys Med 2020; 69:147-163. [PMID: 31918367 DOI: 10.1016/j.ejmp.2019.12.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 11/29/2019] [Accepted: 12/15/2019] [Indexed: 12/22/2022] Open
Abstract
PURPOSE Targeted radiation therapy has seen an increased interest in the past decade. In vitro and in vivo experiments showed enhanced radiation doses due to gold nanoparticles (GNPs) to tumors in mice and demonstrated a high potential for clinical application. However, finding a functionalized molecular formulation for actively targeting GNPs in tumor cells is challenging. Furthermore, the enhanced energy deposition by secondary electrons around GNPs, particularly by short-ranged Auger electrons is difficult to measure. Computational models, such as Monte Carlo (MC) radiation transport codes, have been used to estimate the physical quantities and effects of GNPs. However, as these codes differ from one to another, the reliability of physical and dosimetric quantities needs to be established at cellular and molecular levels, so that the subsequent biological effects can be assessed quantitatively. METHODS In this work, irradiation of single GNPs of 50 nm and 100 nm diameter by X-ray spectra generated by 50 and 100 peak kilovoltages was simulated for a defined geometry setup, by applying multiple MC codes in the EURADOS framework. RESULTS The mean dose enhancement ratio of the first 10 nm-thick water shell around a 100 nm GNP ranges from 400 for 100 kVp X-rays to 600 for 50 kVp X-rays with large uncertainty factors up to 2.3. CONCLUSIONS It is concluded that the absolute dose enhancement effects have large uncertainties and need an inter-code intercomparison for a high quality assurance; relative properties may be a better measure until more experimental data is available to constrain the models.
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Affiliation(s)
- W B Li
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Ingolstädter Landstr. 1, 85764 Neuherberg, Germany.
| | - A Belchior
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - M Beuve
- Institut de Physique Nucléaire de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3 UMR 5822, Villeurbanne, France
| | - Y Z Chen
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - S Di Maria
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - W Friedland
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
| | - B Gervais
- Normandie University, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, UMR 6252, BP 5133, F-14070 Caen Cedex 05, France
| | - B Heide
- Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - N Hocine
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-Aux-Roses, France
| | - A Ipatov
- Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg, Russia
| | - A P Klapproth
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Ingolstädter Landstr. 1, 85764 Neuherberg, Germany; TranslaTUM, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - C Y Li
- Department of Engineering Physics, Tsinghua University, Beijing, China; Nuctech Company Limited, Beijing, China
| | - J L Li
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - G Multhoff
- TranslaTUM, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - F Poignant
- Institut de Physique Nucléaire de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3 UMR 5822, Villeurbanne, France
| | - R Qiu
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - H Rabus
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - B Rudek
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany; Massachusetts General Hospital & Harvard Medical School, Department of Radiation Oncology, Boston, MA, USA
| | - J Schuemann
- Massachusetts General Hospital & Harvard Medical School, Department of Radiation Oncology, Boston, MA, USA
| | - S Stangl
- TranslaTUM, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - E Testa
- Institut de Physique Nucléaire de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3 UMR 5822, Villeurbanne, France
| | - C Villagrasa
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-Aux-Roses, France
| | - W Z Xie
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - Y B Zhang
- Peking University Cancer Hospital, Beijing, China
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10
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Ghosh A, Cederbaum LS, Gokhberg K. Electron transfer mediated decay in HeLi 2 cluster: Potential energy surfaces and decay widths. J Chem Phys 2019; 150:164309. [PMID: 31042888 DOI: 10.1063/1.5082952] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Electron transfer mediated decay (ETMD) is a process responsible for double ionization of dopants in He droplets. It is initiated by producing He+ in the droplet, which is neutralized by ETMD, and has been shown to strongly enhance the dopant's double ionization cross section. The efficiency of ETMD, the spectra of emitted secondary electrons, and the character of the ionic products depend on the nuclear dynamics during the decay. To date, there has been no theoretical investigation of multimode dynamics which accompanies ETMD, which could help to understand such dynamics in a He droplet. In this article, we consider the He-Li2 cluster where an ab initio examination of multimode dynamics during the electronic decay is feasible. Moreover, this cluster can serve as a minimal model for Li2 adsorbed on the droplet's surface-a system where ETMD can be observed experimentally. In He droplets, Li2 can be formed in both the ground X1Σg + and the first excited a3Σu + states. In this article, we present ab initio potential energy surfaces of the electronic states of the He-Li2 cluster involved in ETMD, as well as the respective decay widths. We show that the structure of these surfaces and expected nuclear dynamics strongly depend on the electronic state of Li2. Thus, the overall decay rate and the appearance of the observable electron spectra will be dictated by the electronic structure of the dopant.
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Affiliation(s)
- Aryya Ghosh
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Lorenz S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - Kirill Gokhberg
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
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11
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Kuncic Z, Lacombe S. Nanoparticle radio-enhancement: principles, progress and application to cancer treatment. Phys Med Biol 2018; 63:02TR01. [PMID: 29125831 DOI: 10.1088/1361-6560/aa99ce] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Enhancement of radiation effects by high-atomic number nanoparticles (NPs) has been increasingly studied for its potential to improve radiotherapeutic efficacy. The underlying principle of NP radio-enhancement is the potential to release copious electrons into a nanoscale volume, thereby amplifying radiation-induced biological damage. While the vast majority of studies to date have focused on gold nanoparticles with photon radiation, an increasing number of experimental, theoretical and simulation studies have explored opportunities offered by other NPs (e.g. gadolinium, platinum, iron oxide, hafnium) and other therapeutic radiation sources such as ion beams. It is thus of interest to the research community to consolidate findings from the different studies and summarise progress to date, as well as to identify strategies that offer promising opportunities for clinical translation. This is the purpose of this Topical Review.
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Affiliation(s)
- Zdenka Kuncic
- School of Physics and Sydney Nano Institute, University of Sydney, Sydney, NSW 2006, Australia
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12
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Bhattacharya D, Ben-Asher A, Haritan I, Pawlak M, Landau A, Moiseyev N. Polyatomic ab Initio Complex Potential Energy Surfaces: Illustration of Ultracold Collisions. J Chem Theory Comput 2017; 13:1682-1690. [DOI: 10.1021/acs.jctc.7b00083] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Debarati Bhattacharya
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Anael Ben-Asher
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Idan Haritan
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Mariusz Pawlak
- Faculty
of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina
7, 87-100 Toruń, Poland
| | - Arie Landau
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Nimrod Moiseyev
- Schulich
Faculty of Chemistry, §Department of Physics, and ∥Russell-Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa 32000, Israel
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13
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Unger I, Seidel R, Thürmer S, Pohl MN, Aziz EF, Cederbaum LS, Muchová E, Slavíček P, Winter B, Kryzhevoi NV. Observation of electron-transfer-mediated decay in aqueous solution. Nat Chem 2017. [DOI: 10.1038/nchem.2727] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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You D, Fukuzawa H, Sakakibara Y, Takanashi T, Ito Y, Maliyar GG, Motomura K, Nagaya K, Nishiyama T, Asa K, Sato Y, Saito N, Oura M, Schöffler M, Kastirke G, Hergenhahn U, Stumpf V, Gokhberg K, Kuleff AI, Cederbaum LS, Ueda K. Charge transfer to ground-state ions produces free electrons. Nat Commun 2017; 8:14277. [PMID: 28134238 PMCID: PMC5290264 DOI: 10.1038/ncomms14277] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 12/09/2016] [Indexed: 11/09/2022] Open
Abstract
Inner-shell ionization of an isolated atom typically leads to Auger decay. In an environment, for example, a liquid or a van der Waals bonded system, this process will be modified, and becomes part of a complex cascade of relaxation steps. Understanding these steps is important, as they determine the production of slow electrons and singly charged radicals, the most abundant products in radiation chemistry. In this communication, we present experimental evidence for a so-far unobserved, but potentially very important step in such relaxation cascades: Multiply charged ionic states after Auger decay may partially be neutralized by electron transfer, simultaneously evoking the creation of a low-energy free electron (electron transfer-mediated decay). This process is effective even after Auger decay into the dicationic ground state. In our experiment, we observe the decay of Ne2+ produced after Ne 1s photoionization in Ne-Kr mixed clusters.
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Affiliation(s)
- D You
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - H Fukuzawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - Y Sakakibara
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - T Takanashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - Y Ito
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - G G Maliyar
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - K Motomura
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - K Nagaya
- RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan.,Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Nishiyama
- RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan.,Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Asa
- RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan.,Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Sato
- RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan.,Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - N Saito
- RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan.,National Metrology Institute of Japan, AIST, Tsukuba 305-8568, Japan
| | - M Oura
- RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
| | - M Schöffler
- RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan.,Institute for Nuclear Physics, Johann Wolfgang Goethe University Frankfurt, Frankfurt 60438, Germany
| | - G Kastirke
- Institute for Nuclear Physics, Johann Wolfgang Goethe University Frankfurt, Frankfurt 60438, Germany
| | - U Hergenhahn
- Leibniz Institute of Surface Modification, Leipzig 04318, Germany.,Max-Planck-Institute for Plasma Physics, Greifswald 17491, Germany
| | - V Stumpf
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg 69120, Germany
| | - K Gokhberg
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg 69120, Germany
| | - A I Kuleff
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg 69120, Germany
| | - L S Cederbaum
- Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg, Heidelberg 69120, Germany
| | - K Ueda
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.,RIKEN SPring-8 Center, Kouto 1-1-1, Sayo, Hyogo 679-5148, Japan
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15
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Stumpf V, Scheit S, Kolorenč P, Gokhberg K. Electron transfer mediated decay in NeXe triggered by K-LL Auger decay of Ne. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2016.08.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Ghosh A, Vaval N, Pal S. Auger decay rates of core hole states using equation of motion coupled cluster method. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2016.09.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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LaForge AC, Stumpf V, Gokhberg K, von Vangerow J, Stienkemeier F, Kryzhevoi NV, O'Keeffe P, Ciavardini A, Krishnan SR, Coreno M, Prince KC, Richter R, Moshammer R, Pfeifer T, Cederbaum LS, Mudrich M. Enhanced Ionization of Embedded Clusters by Electron-Transfer-Mediated Decay in Helium Nanodroplets. PHYSICAL REVIEW LETTERS 2016; 116:203001. [PMID: 27258866 DOI: 10.1103/physrevlett.116.203001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 06/05/2023]
Abstract
We report the observation of electron-transfer-mediated decay (ETMD) involving magnesium (Mg) clusters embedded in helium (He) nanodroplets. ETMD is initiated by the ionization of He followed by removal of two electrons from the Mg clusters of which one is transferred to the He ion while the other electron is emitted into the continuum. The process is shown to be the dominant ionization mechanism for embedded clusters for photon energies above the ionization potential of He. For Mg clusters larger than five atoms we observe stable doubly ionized clusters. Thus, ETMD provides an efficient pathway to the formation of doubly ionized cold species in doped nanodroplets.
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Affiliation(s)
- A C LaForge
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - V Stumpf
- Physikalisch-Chemisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany
| | - K Gokhberg
- Physikalisch-Chemisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany
| | - J von Vangerow
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - F Stienkemeier
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
| | - N V Kryzhevoi
- Physikalisch-Chemisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany
| | - P O'Keeffe
- CNR-Istituto di Struttura della Materia, CP10, 00016 Monterotondo Scalo, Italy
| | - A Ciavardini
- CNR-Istituto di Struttura della Materia, CP10, 00016 Monterotondo Scalo, Italy
| | - S R Krishnan
- Department of Physics, Indian Institute of Technology, Madras, Chennai 600 036, India
| | - M Coreno
- CNR-Istituto di Struttura della Materia, CP10, 00016 Monterotondo Scalo, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, Basovizza, Trieste 34149, Italy
| | - R Richter
- Elettra-Sincrotrone Trieste, Basovizza, Trieste 34149, Italy
| | - R Moshammer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - T Pfeifer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - L S Cederbaum
- Physikalisch-Chemisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany
| | - M Mudrich
- Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany
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18
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The role of metal ions in X-ray-induced photochemistry. Nat Chem 2016; 8:237-41. [DOI: 10.1038/nchem.2429] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 11/23/2015] [Indexed: 01/23/2023]
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19
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Molecular excitation and relaxation of extreme ultraviolet lithography photoresists. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/b978-0-08-100354-1.00002-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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20
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Miteva T, Wenzel J, Klaiman S, Dreuw A, Gokhberg K. X-Ray absorption spectra of microsolvated metal cations. Phys Chem Chem Phys 2016; 18:16671-81. [DOI: 10.1039/c6cp02606k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Core excited states of microsolvated ions undergo substantial delocalisation whose degree strongly depends on the ion's charge.
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Affiliation(s)
- T. Miteva
- Theoretische Chemie
- Physikalisch-Chemisches Institut
- Universität Heidelberg
- D-69120 Heidelberg
- Germany
| | - J. Wenzel
- Interdisciplinary Center for Scientific Computing
- Ruprecht-Karls University
- D-69120 Heidelberg
- Germany
| | - S. Klaiman
- Theoretische Chemie
- Physikalisch-Chemisches Institut
- Universität Heidelberg
- D-69120 Heidelberg
- Germany
| | - A. Dreuw
- Interdisciplinary Center for Scientific Computing
- Ruprecht-Karls University
- D-69120 Heidelberg
- Germany
| | - K. Gokhberg
- Theoretische Chemie
- Physikalisch-Chemisches Institut
- Universität Heidelberg
- D-69120 Heidelberg
- Germany
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21
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Kolorenč P, Sisourat N. Interatomic Coulombic decay widths of helium trimer: Ab initio calculations. J Chem Phys 2015; 143:224310. [PMID: 26671378 DOI: 10.1063/1.4936897] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report on an extensive study of interatomic Coulombic decay (ICD) widths in helium trimer computed using a fully ab initio method based on the Fano theory of resonances. Algebraic diagrammatic construction for one-particle Green's function is utilized for the solution of the many-electron problem. An advanced and universal approach to partitioning of the configuration space into discrete states and continuum subspaces is described and employed. Total decay widths are presented for all ICD-active states of the trimer characterized by one-site ionization and additional excitation of an electron into the second shell. Selected partial decay widths are analyzed in detail, showing how three-body effects can qualitatively change the character of certain relaxation transitions. Previously unreported type of three-electron decay processes is identified in one class of the metastable states.
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Affiliation(s)
- Přemysl Kolorenč
- Charles University in Prague, Faculty of Mathematics and Physics, Institute of Theoretical Physics, V Holešovičkách 2, 180 00 Prague, Czech Republic
| | - Nicolas Sisourat
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7614, Laboratoire de Chimie Physique Matière et Rayonnement, F-75005 Paris, France
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22
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Ghosh A, Pal S, Vaval N. Lifetime of inner-shell hole states of Ar (2p) and Kr (3d) using equation-of-motion coupled cluster method. J Chem Phys 2015; 143:024305. [DOI: 10.1063/1.4926396] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Aryya Ghosh
- Electronic Structure Theory Group, Physical Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
| | - Sourav Pal
- Electronic Structure Theory Group, Physical Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Nayana Vaval
- Electronic Structure Theory Group, Physical Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
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