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Buttersack T, Haak H, Bluhm H, Hergenhahn U, Meijer G, Winter B. Imaging temperature and thickness of thin planar liquid water jets in vacuum. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2023; 10:034901. [PMID: 37398627 PMCID: PMC10314331 DOI: 10.1063/4.0000188] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/12/2023] [Indexed: 07/04/2023]
Abstract
We present spatially resolved measurements of the temperature of a flat liquid water microjet for varying ambient pressures, from vacuum to 100% relative humidity. The entire jet surface is probed in a single shot by a high-resolution infrared camera. Obtained 2D images are substantially influenced by the temperature of the apparatus on the opposite side of the infrared camera; a protocol to correct for the thermal background radiation is presented. In vacuum, we observe cooling rates due to water evaporation on the order of 105 K/s. For our system, this corresponds to a temperature decrease in approximately 15 K between upstream and downstream positions of the flowing leaf. Making reasonable assumptions on the absorption of the thermal background radiation in the flatjet, we can extend our analysis to infer a thickness map. For a reference system, our value for the thickness is in good agreement with the one reported from white light interferometry.
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Affiliation(s)
| | | | | | | | | | - Bernd Winter
- Authors to whom correspondence should be addressed: and
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2
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Terao Y, Kumagai Y, Suzuki I, Tsuchiya T, Ukai M, Yokoya A, Fujii K, Fukuda Y, Saitoh Y. X-ray induced luminescence spectroscopy for DNA damaging intermediates aided by a monochromatic synchrotron radiation. Int J Radiat Biol 2023; 99:89-94. [PMID: 34402379 DOI: 10.1080/09553002.2021.1967506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
PURPOSE To identify the bonding sites of initial radiation interaction with DNA and to trace the following chemical reaction sequences on the pathway of damage induction, we carry out a spectroscopy XIL (X-ray induced luminescence) using soft X-ray synchrotron radiation. This is a nondestructive analysis of the excited intermediate species produced in a molecular mechanism on the damage induction pathway. MATERIALS AND METHODS We introduce aqueous samples of UMP (uridine-5'-monophosphate) in the vacuum by the use of a liquid micro-jet technique. The luminescence in the region of UV-VIS (from visible to ultraviolet) radiation induced after the absorption of monochromatic soft X-ray by aqueous UMP is measured with sweeping the soft X-ray energy in the region of 370-560 eV. RESULTS The enhanced XIL intensities for aqueous UMP in the region of soft X-ray of 410-530 eV (in "water window" region) are obtained. The enhancement of XIL intensities in the UV-VIS region, relative to the water control, is explained by the excitation and ionization of a K-shell electron of nitrogen atoms in the uracil moiety. The enhanced XIL intensities do not match the structure of XANES (X-ray absorption near-edge structure) of the aqueous UMP. This suggests that the XIL intensities reflect the quantum yields of luminescence, or the quantum yields for conversion by UMP of an absorbed X-ray into UV-VIS radiation. In this paper, spectra of luminescence are shown to be resolved by combining low pass filters. The filtered luminescence spectra are obtained at the center of gravity (λc) of the band pass wavelength regions at λc = 270nm, 295 nm, 340 nm, 385 nm, 450 nm, and 525 nm., which show a trend similar to the fluorescence of nucleobases induced by ultraviolet radiation. CONCLUSION It is concluded that the origin of the observed XIL is the hydrated uracil moiety in aqueous UMP, decomposition of which is suppressed by the migration of excess charge and internal energy after the double ionization due to Auger decay.
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Affiliation(s)
- Yusaku Terao
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yoshiaki Kumagai
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Issei Suzuki
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Takahiro Tsuchiya
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Masatoshi Ukai
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Institute of Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Akinari Yokoya
- Institute of Quantum Life Science, National Institute for Quantum and Radiological Science, Ibaraki, Japan
| | - Kentaro Fujii
- Institute of Quantum Life Science, National Institute for Quantum and Radiological Science, Ibaraki, Japan.,Quantum beam Science Research Directorate, National Institute for Quantum and Radiological Science, Hyogo, Japan
| | - Yoshihiro Fukuda
- Synchrotron Radiation Research Center, Japan Atomic Energy Agency, Hyogo, Japan
| | - Yuji Saitoh
- Synchrotron Radiation Research Center, Japan Atomic Energy Agency, Hyogo, Japan
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Howell RW. Advancements in the use of Auger electrons in science and medicine during the period 2015-2019. Int J Radiat Biol 2020; 99:2-27. [PMID: 33021416 PMCID: PMC8062591 DOI: 10.1080/09553002.2020.1831706] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/01/2020] [Accepted: 09/28/2020] [Indexed: 02/06/2023]
Abstract
Auger electrons can be highly radiotoxic when they are used to irradiate specific molecular sites. This has spurred basic science investigations of their radiobiological effects and clinical investigations of their potential for therapy. Focused symposia on the biophysical aspects of Auger processes have been held quadrennially. This 9th International Symposium on Physical, Molecular, Cellular, and Medical Aspects of Auger Processes at Oxford University brought together scientists from many different fields to review past findings, discuss the latest studies, and plot the future work to be done. This review article examines the research in this field that was published during the years 2015-2019 which corresponds to the period since the last meeting in Japan. In addition, this article points to future work yet to be done. There have been a plethora of advancements in our understanding of Auger processes. These advancements range from basic atomic and molecular physics to new ways to implement Auger electron emitters in radiopharmaceutical therapy. The highly localized doses of radiation that are deposited within a 10 nm of the decay site make them precision tools for discovery across the physical, chemical, biological, and medical sciences.
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Affiliation(s)
- Roger W Howell
- Division of Radiation Research, Department of Radiology, New Jersey Medical School, Rutgers University, Newark, NJ, USA
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Hans A, Ozga C, Schmidt P, Hartmann G, Nehls A, Wenzel P, Richter C, Lant C, Holzapfel X, Viehmann JH, Hergenhahn U, Ehresmann A, Knie A. Setup for multicoincidence experiments of photons in the extreme ultraviolet to visible spectral range and charged particles-The solid angle maximization approach. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:093104. [PMID: 31575280 DOI: 10.1063/1.5109104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/21/2019] [Indexed: 06/10/2023]
Abstract
The coincident detection of particles is a powerful method in experimental physics, enabling the investigation of a variety of projectile-target interactions. The vast majority of coincidence experiments is performed with charged particles, as they can be guided by electric or magnetic fields to yield large detection probabilities. When a neutral species or a photon is one of the particles recorded in coincidence, its detection probability typically suffers from small solid angles. Here, we present two optical assemblies considerably enhancing the solid angle for photon detection in the extreme ultraviolet to visible spectral range. The efficiency and versatility of these assemblies are demonstrated for electron-photon coincidence detection, where electrons and photons emerge from fundamental processes after photoexcitation of gaseous samples by synchrotron radiation.
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Affiliation(s)
- A Hans
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - C Ozga
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Ph Schmidt
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - G Hartmann
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - A Nehls
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Ph Wenzel
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - C Richter
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318 Leipzig, Germany
| | - C Lant
- Department of Physics, New York University, 726 Broadway, New York, New York 10003, USA
| | - X Holzapfel
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - J H Viehmann
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - U Hergenhahn
- Leibniz Institute of Surface Engineering (IOM), Permoserstr. 15, 04318 Leipzig, Germany
| | - A Ehresmann
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - A Knie
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
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Kojima T, Aihara H, Kodashima Y, Makishima H, Nakiri S, Takada S, Shimada H, Ukai M, Ozga C, Holzapfel X, Schmidt P, Küstner-Wetekam C, Otto H, Bloβ D, Knie A, Ehresmann A, Yokoya A, Fujii K, Fukuda Y, Saitoh Y. NOVEL ANALYTICAL STUDY FOR REACTION INTERMEDIATES IN THE PRIMARY RADIATION INTERACTION OF DNA USING A SYNCHROTRON RADIATION-INDUCED LUMINESCENCE SPECTROSCOPY. RADIATION PROTECTION DOSIMETRY 2019; 183:32-35. [PMID: 30753692 DOI: 10.1093/rpd/ncy239] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Indexed: 06/09/2023]
Abstract
To identify the precise molecular processes to induce DNA lesions, we attempt a novel spectroscopy of X-ray induced luminescence (XIL) using soft X-ray synchrotron radiation, which is a non-destructive analysis of the reaction intermediates in the elementary reaction pathway of damage induction and self-organized restoration. Using a liquid micro-jet technique to introduce aqueous samples in a vacuum chamber, we measure UV-visible luminescence from nucleotide solution as a function of the soft X-ray energy from the nitrogen to oxygen K-edge region. The XIL intensities for the nucleotide solutions are significantly enhanced in the soft X-ray region (410-530 eV) which is ascribed to the K-shell excitation/ionization of nitrogen atoms in the nucleobases. Furthermore, the XIL spectra do not show any signature of X-ray absorption near-edge structure (XANES) of the nucleobases. This is because the luminescence intensities collected from the integral area of the micro-jet only reflect the quantum yield of luminescence of the absorbed X-ray into UV-visible light irrespective of the absorption cross sections, i.e. of XANES. Thus the present result is the first evidence of luminescence as a result of X-ray absorption of aqueous nucleotides.
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Affiliation(s)
- T Kojima
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - H Aihara
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - Y Kodashima
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - H Makishima
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - S Nakiri
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - S Takada
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - H Shimada
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - M Ukai
- Department of Applied Physics, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo, Japan
| | - C Ozga
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - X Holzapfel
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - Ph Schmidt
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - C Küstner-Wetekam
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - H Otto
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - D Bloβ
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - A Knie
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - A Ehresmann
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, Kassel, Germany
| | - A Yokoya
- Center of Quantum beam Science, National Institute for Quantum and Radiological Science (QST), Naka-gun, Ibaraki, Japan
| | - K Fujii
- Center of Quantum beam Science, National Institute for Quantum and Radiological Science (QST), Naka-gun, Ibaraki, Japan
| | - Y Fukuda
- Synchrotron Radiation Research Center, Japan Atomic Energy Agency (JAEA), Sayo-gun, Hyougo, Japan
| | - Y Saitoh
- Synchrotron Radiation Research Center, Japan Atomic Energy Agency (JAEA), Sayo-gun, Hyougo, Japan
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6
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Extreme Ultraviolet to Visible Dispersed Single Photon Detection for Highly Sensitive Sensing of Fundamental Processes in Diverse Samples. MATERIALS 2018; 11:ma11060869. [PMID: 29789512 PMCID: PMC6025539 DOI: 10.3390/ma11060869] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/17/2018] [Accepted: 05/17/2018] [Indexed: 11/17/2022]
Abstract
The detection of a single photon is the most sensitive method for sensing of photon emission. A common technique for single photon detection uses microchannel plate arrays combined with photocathodes and position sensitive anodes. Here, we report on the combination of such detectors with grating diffraction spectrometers, constituting a low-noise wavelength resolving photon spectroscopy apparatus with versatile applicability. We recapitulate the operation principle of such detectors and present the details of the experimental set-up, which we use to investigate fundamental mechanisms in atomic and molecular systems after excitation with tuneable synchrotron radiation. Extensions for time and polarization resolved measurements are described and examples of recent applications in current research are given.
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7
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Chalabala J, Uhlig F, Slavíček P. Assessment of Real-Time Time-Dependent Density Functional Theory (RT-TDDFT) in Radiation Chemistry: Ionized Water Dimer. J Phys Chem A 2018. [PMID: 29513531 DOI: 10.1021/acs.jpca.8b01259] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ionization in the condensed phase and molecular clusters leads to a complicated chain of processes with coupled electron-nuclear dynamics. It is difficult to describe such dynamics with conventional nonadiabatic molecular dynamics schemes since the number of states swiftly increases as the molecular system grows. It is therefore attractive to use a direct electron and nuclear propagation such as the real-time time-dependent density functional theory (RT-TDDFT). Here we report a RT-TDDFT benchmark study on simulations of singly and doubly ionized states of a water monomer and dimer as a prototype for more complex processes in a condensed phase. We employed the RT-TDDFT based Ehrenfest molecular dynamics with a generalized gradient approximate (GGA) functional and compared it with wave-function-based surface hopping (SH) simulations. We found that the initial dynamics of a singly HOMO ionized water dimer is similar for both the RT-TDDFT/GGA and the SH simulations but leads to completely different reaction channels on a longer time scale. This failure is attributed to the self-interaction error in the GGA functionals and it can be avoided by using hybrid functionals with large fraction of exact exchange (represented here by the BHandHLYP functional). The simulations of doubly ionized states are reasonably described already at the GGA level. This suggests that the RT-TDDFT/GGA method could describe processes following the autoionization processes such as Auger emission, while its applicability to more complex processes such as intermolecular Coulombic decay remains limited.
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Affiliation(s)
- Jan Chalabala
- Department of Physical Chemistry , University of Chemistry and Technology , Technická 5 , 16628 Prague , Czech Republic
| | - Frank Uhlig
- Department of Physical Chemistry , University of Chemistry and Technology , Technická 5 , 16628 Prague , Czech Republic.,Institute for Computational Physics , University of Stuttgart , Allmandring 3 , 70569 Stuttgart , Germany
| | - Petr Slavíček
- Department of Physical Chemistry , University of Chemistry and Technology , Technická 5 , 16628 Prague , Czech Republic.,Jaroslav Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic , Dolejškova 3 , 18200 Prague , Czech Republic
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