Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Dipanwita Ray"'
Autor:
Andre Al-Haddad, Solène Oberli, Jesús González-Vázquez, Maximilian Bucher, Gilles Doumy, Phay Ho, Jacek Krzywinski, Thomas J. Lane, Alberto Lutman, Agostino Marinelli, Timothy J. Maxwell, Stefan Moeller, Stephen T. Pratt, Dipanwita Ray, Ron Shepard, Stephen H. Southworth, Álvaro Vázquez-Mayagoitia, Peter Walter, Linda Young, Antonio Picón, Christoph Bostedt
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-7 (2022)
X-ray photoelectron spectroscopy probes the chemical environment in a molecule at a specific atomic site. Here the authors extend this concept with a site selective trigger to follow chemical bond changes as they occur on the femtosecond time scale.
Externí odkaz:
https://doaj.org/article/790ca6a546db4a61a506d320dcb718c9
Autor:
Markus Ilchen, Philipp Schmidt, Nikolay M. Novikovskiy, Gregor Hartmann, Patrick Rupprecht, Ryan N. Coffee, Arno Ehresmann, Andreas Galler, Nick Hartmann, Wolfram Helml, Zhirong Huang, Ludger Inhester, Alberto A. Lutman, James P. MacArthur, Timothy Maxwell, Michael Meyer, Valerija Music, Heinz-Dieter Nuhn, Timur Osipov, Dipanwita Ray, Thomas J. A. Wolf, Sadia Bari, Peter Walter, Zheng Li, Stefan Moeller, André Knie, Philipp V. Demekhin
Publikováno v:
Communications Chemistry, Vol 4, Iss 1, Pp 1-9 (2021)
Ultrashort circularly polarised light pulses from free-electron lasers offer a route for exploring chiral molecules and their dynamics, but remain challenging to harness. Here, X-ray pump-probe experiments enable a site-specific photoelectron circula
Externí odkaz:
https://doaj.org/article/7c0e42a2648348ada89c187695c4e669
Autor:
Phay J. Ho, Benedikt J. Daurer, Max F. Hantke, Johan Bielecki, Andre Al Haddad, Maximilian Bucher, Gilles Doumy, Ken R. Ferguson, Leonie Flückiger, Tais Gorkhover, Bianca Iwan, Christopher Knight, Stefan Moeller, Timur Osipov, Dipanwita Ray, Stephen H. Southworth, Martin Svenda, Nicusor Timneanu, Anatoli Ulmer, Peter Walter, Janos Hajdu, Linda Young, Filipe R. N. C. Maia, Christoph Bostedt
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
X-ray free electron lasers provide high photon flux to explore single particle diffraction imaging of biological samples. Here the authors present dynamic electronic structure calculations and benchmark them to single-particle XFEL diffraction data o
Externí odkaz:
https://doaj.org/article/a3ca3057e375429c9f96991e18a72227
Autor:
Chaitry Ghosal, Kaushik Pandit, Aditi Sen, Subhadip Choudhuri, Abu Hena Hasanoor Reja, Dipanwita Ray, Subhankar Chowdhury, Basudev Bhattacharya
Publikováno v:
Al Ameen Journal of Medical Sciences, Vol 06, Iss 01, Pp 58-64 (2013)
Background: The disorder, Maturity Onset of Diabetes of the young (MODY) is a monogenic form of Non-Insulin dependent Diabetes Mellitus (NIDDM), characterized by autosomal dominant mode of inheritance and onset is usually before 25 years of age. Clin
Externí odkaz:
https://doaj.org/article/4d48530814b1463883be237de82db71b
Autor:
Dipanwita Ray, Sukanta Sinha, Somnath Saha, Rathindra Nath Dutta, Sujata Bhattacharya, Nishit Kumar Pal, Basudev Bhattacharya
Publikováno v:
Al Ameen Journal of Medical Sciences, Vol 03, Iss 02, Pp 146-151 (2010)
Streptococcus pyogenes is an important cause of serious bacterial infection in both adults and school-going children. On the present scenario of emerging changes observed in drug resistant pattern of S. pyogenes, this study was undertaken, from Octob
Externí odkaz:
https://doaj.org/article/799c2c8f656a4152a4ca6ea521cf43a8
Autor:
Camila Bacellar, Adam S. Chatterley, Florian Lackner, C. D. Pemmaraju, Rico Mayro P. Tanyag, Deepak Verma, Charles Bernando, Sean M. O. O’Connell, Maximilian Bucher, Ken R. Ferguson, Tais Gorkhover, Ryan N. Coffee, Giacomo Coslovich, Dipanwita Ray, Timur Osipov, Daniel M. Neumark, Christoph Bostedt, Andrey F. Vilesov, Oliver Gessner
Publikováno v:
Physical Review Letters. 129
Strong-field ionization of nanoscale clusters provides excellent opportunities to study the complex correlated electronic and nuclear dynamics of near-solid density plasmas. Yet, monitoring ultrafast, nanoscopic dynamics in real-time is challenging,
Autor:
Phay J. Ho, Dipanwita Ray, C. Stefan Lehmann, Adam E. A. Fouda, Robert W. Dunford, Elliot P. Kanter, Gilles Doumy, Linda Young, Donald A. Walko, Xuechen Zheng, Lan Cheng, Stephen H. Southworth
Publikováno v:
The Journal of Chemical Physics. 158:134304
Characterization of the inner-shell decay processes in molecules containing heavy elements is key to understanding x-ray damage of molecules and materials and for medical applications with Auger-electron-emitting radionuclides. The 1s hole states of
Autor:
Yang Gao, Antonio Picón, Dipanwita Ray, Lan Cheng, Gilles Doumy, Stephen H. Southworth, R. W. Dunford, C. S. Lehmann, Anne Marie March, Phay J. Ho, Bertold Krässig, Donald A. Walko, Linda Young, Elliot P. Kanter
Publikováno v:
Physical Review A. 100
The $1s\phantom{\rule{4pt}{0ex}}\ensuremath{\rightarrow}\phantom{\rule{4pt}{0ex}}np$ Rydberg transitions below the $1s$ ionization thresholds of Kr and Xe are obscured in x-ray absorption spectra due to core-hole lifetime broadening. However, the $np
Autor:
Sean M. O. O’Connell, Oliver Gessner, Giacomo Coslovich, Charles Bernando, Kenneth R. Ferguson, Dipanwita Ray, Timur Osipov, Adam S. Chatterley, Tais Gorkhover, Camila Bacellar, Rico Mayro P. Tanyag, Christoph Bostedt, Florian Lackner, N. Coffee Ryan, Daniel M. Neumark, Chaitanya Das Pemmaraju, Andrey F. Vilesov, Maximilian Bucher, Deepak Verma
Publikováno v:
EPJ Web of Conferences, Vol 205, p 06006 (2019)
Intense laser induced plasma dynamics in sub-micron scale helium droplets are monitored by femtosecond time-resolved X-ray coherent diffractive imaging. Anisotropic surface softening and strongly anisotropic shrinking of the plasma core are observed.
Autor:
Brendan Murphy, Christoph Bostedt, Linda Young, Phay J. Ho, Marc Messerschmidt, Robin Santra, Nora Berrah, James M. Glownia, Gilles Doumy, Lorenz S. Cederbaum, Stephen H. Southworth, Bertold Krässig, Shambhu Ghimire, Jochen Küpper, Dipanwita Ray, Yuelin Li, Elliot P. Kanter, John D. Bozek, Dimitris Koulentianos, Li Fang, Timur Osipov, Adam E. A. Fouda, Nikolai V. Kryzhevoi, James P. Cryan
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 53:244005
Formamide, a simple model bio-molecule (HCONH2), is irradiated with high intensity, ultrashort pulses from an x-ray free electron laser. Ionic fragments resulting from photoionization and subsequent decay processes are recorded, as well as the electr