Zobrazeno 1 - 10
of 27
pro vyhledávání: '"R J Squibb"'
Autor:
P K Maroju, C Grazioli, M Di Fraia, M Moioli, D Ertel, H Ahmadi, O Plekan, P Finetti, E Allaria, L Giannessi, G De Ninno, S Spampinati, A A Lutman, R J Squibb, R Feifel, P Carpeggiani, M Reduzzi, T Mazza, M Meyer, S Bengtsson, N Ibrakovic, E R Simpson, J Mauritsson, T Csizmadia, M Dumergue, S Kühn, N G Harshitha, D You, K Ueda, M Labeye, J E Bækhøj, K J Schafer, E V Gryzlova, A N Grum-Grzhimailo, K C Prince, C Callegari, G Sansone
Publikováno v:
New Journal of Physics, Vol 23, Iss 4, p 043046 (2021)
The generation of attosecond pulse trains at free-electron lasers opens new opportunities in ultrafast science, as it gives access, for the first time, to reproducible, programmable, extreme ultraviolet (XUV) waveforms with high intensity. In this wo
Externí odkaz:
https://doaj.org/article/d56ce4bac9e54db7a0edd0faeda68cba
Publikováno v:
New Journal of Physics, Vol 17, Iss 12, p 122001 (2015)
Using a multi-electron coincidence technique combined with synchrotron radiation we demonstrate the real existence of the elusive three-electron collective process in resonant Auger decay of Kr. The three-electron process is about 40 times weaker tha
Externí odkaz:
https://doaj.org/article/8c2dc315d6da462dbdc2107892519309
Autor:
M Mucke, V Zhaunerchyk, L J Frasinski, R J Squibb, M Siano, J H D Eland, P Linusson, P Salén, P v d Meulen, R D Thomas, M Larsson, L Foucar, J Ullrich, K Motomura, S Mondal, K Ueda, T Osipov, L Fang, B F Murphy, N Berrah, C Bostedt, J D Bozek, S Schorb, M Messerschmidt, J M Glownia, J P Cryan, R N Coffee, O Takahashi, S Wada, M N Piancastelli, R Richter, K C Prince, R Feifel
Publikováno v:
New Journal of Physics, Vol 17, Iss 7, p 073002 (2015)
Few-photon ionization and relaxation processes in acetylene (C _2 H _2 ) and ethane (C _2 H _6 ) were investigated at the linac coherent light source x-ray free electron laser (FEL) at SLAC, Stanford using a highly efficient multi-particle correlatio
Externí odkaz:
https://doaj.org/article/89df29f9a1374399a8e92bf604c02b47
Autor:
D. Mayer, F. Lever, D. Picconi, J. Metje, S. Alisauskas, F. Calegari, S. Düsterer, C. Ehlert, R. Feifel, M. Niebuhr, B. Manschwetus, M. Kuhlmann, T. Mazza, M. S. Robinson, R. J. Squibb, A. Trabattoni, M. Wallner, P. Saalfrank, T. J. A. Wolf, M. Gühr
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Imaging the charge flow in photoexcited molecules would provide key information on photophysical and photochemical processes. Here the authors demonstrate tracking in real time after photoexcitation the change in charge density at a specific site of
Externí odkaz:
https://doaj.org/article/5c32a671c326466eaf927fda5b542105
Autor:
L. Neoričić, D. Busto, H. Laurell, R. Weissenbilder, M. Ammitzböll, S. Luo, J. Peschel, H. Wikmark, J. Lahl, S. Maclot, R. J. Squibb, S. Zhong, P. Eng-Johnsson, C. L. Arnold, R. Feifel, M. Gisselbrecht, E. Lindroth, A. L’Huillier
Publikováno v:
Frontiers in Physics, Vol 10 (2022)
We study resonant two-photon ionization of helium atoms via the 1s3p, 1s4p and 1s5p1P1 states using the 15th harmonic of a titanium-sapphire laser for the excitation and a weak fraction of the laser field for the ionization. The phase of the photoele
Externí odkaz:
https://doaj.org/article/c306f9706f18423aa1983b25477c50cc
Autor:
D. Mayer, F. Lever, D. Picconi, J. Metje, S. Alisauskas, F. Calegari, S. Düsterer, C. Ehlert, R. Feifel, M. Niebuhr, B. Manschwetus, M. Kuhlmann, T. Mazza, M. S. Robinson, R. J. Squibb, A. Trabattoni, M. Wallner, P. Saalfrank, T. J. A. Wolf, M. Gühr
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-3 (2022)
Externí odkaz:
https://doaj.org/article/3a574a66caab423e86d95b6140cc6544
Autor:
A. Hult Roos, J. H. D. Eland, J. Andersson, R. J. Squibb, D. Koulentianos, O. Talaee, R. Feifel
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Abstract Systematic measurements of electron emission following formation of single 1s or 2p core holes in molecules with C, O, F, Si, S and Cl atoms show that overall triple ionization can make up as much as 20% of the decay. The proportion of tripl
Externí odkaz:
https://doaj.org/article/a35461ae89b34e9e85ea67da0de7789c
Autor:
R. J. Squibb, M. Sapunar, A. Ponzi, R. Richter, A. Kivimäki, O. Plekan, P. Finetti, N. Sisourat, V. Zhaunerchyk, T. Marchenko, L. Journel, R. Guillemin, R. Cucini, M. Coreno, C. Grazioli, M. Di Fraia, C. Callegari, K. C. Prince, P. Decleva, M. Simon, J. H. D. Eland, N. Došlić, R. Feifel, M. N. Piancastelli
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
The first steps in photochemical processes involve changes in electronic and geometric structure on extremely short timescales. Here, the authors report femtosecond dynamics in prototypical acetylacetone, by pump-probe photoexcitation-photoemission e
Externí odkaz:
https://doaj.org/article/c44113b9e3f048fa8921c959f103ef60
Autor:
T. Barillot, O. Alexander, B. Cooper, T. Driver, D. Garratt, S. Li, A. Al Haddad, A. Sanchez-Gonzalez, M. Agåker, C. Arrell, M. J. Bearpark, N. Berrah, C. Bostedt, J. Bozek, C. Brahms, P. H. Bucksbaum, A. Clark, G. Doumy, R. Feifel, L. J. Frasinski, S. Jarosch, A. S. Johnson, L. Kjellsson, P. Kolorenč, Y. Kumagai, E. W. Larsen, P. Matia-Hernando, M. Robb, J.-E. Rubensson, M. Ruberti, C. Sathe, R. J. Squibb, A. Tan, J. W. G. Tisch, M. Vacher, D. J. Walke, T. J. A. Wolf, D. Wood, V. Zhaunerchyk, P. Walter, T. Osipov, A. Marinelli, T. J. Maxwell, R. Coffee, A. A. Lutman, V. Averbukh, K. Ueda, J. P. Cryan, J. P. Marangos
Publikováno v:
Physical Review X, Vol 11, Iss 3, p 031048 (2021)
The possibility of suddenly ionized molecules undergoing extremely fast electron hole (or hole) dynamics prior to significant structural change was first recognized more than 20 years ago and termed charge migration. The accurate probing of ultrafast
Externí odkaz:
https://doaj.org/article/9125dfe7b71b4902b383d1eaa3c5b4f5
Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption
Autor:
T. J. A. Wolf, R. H. Myhre, J. P. Cryan, S. Coriani, R. J. Squibb, A. Battistoni, N. Berrah, C. Bostedt, P. Bucksbaum, G. Coslovich, R. Feifel, K. J. Gaffney, J. Grilj, T. J. Martinez, S. Miyabe, S. P. Moeller, M. Mucke, A. Natan, R. Obaid, T. Osipov, O. Plekan, S. Wang, H. Koch, M. Gühr
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Many photo-induced processes such as photosynthesis occur in organic molecules, but their femtosecond excited-state dynamics are difficult to track. Here, the authors exploit the element and site selectivity of soft X-ray absorption to sensitively fo
Externí odkaz:
https://doaj.org/article/bf84fb1d3c9c472f9e0e1473e557de0e