Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Champenois, Elio"'
Autor:
Driver, Taran, Mountney, Miles, Wang, Jun, Ortmann, Lisa, Al-Haddad, Andre, Berrah, Nora, Bostedt, Christoph, Champenois, Elio G., DiMauro, Louis F., Duris, Joseph, Garratt, Douglas, Glownia, James M., Guo, Zhaoheng, Haxton, Daniel, Isele, Erik, Ivanov, Igor, Ji, Jiabao, Kamalov, Andrei, Li, Siqi, Lin, Ming-Fu, Marangos, Jon P., Obaid, Razib, O'Neal, Jordan T., Rosenberger, Philipp, Shivaram, Niranjan H., Wang, Anna L., Walter, Peter, Wolf, Thomas J. A., Wörner, Hans Jakob, Zhang, Zhen, Bucksbaum, Philip H., Kling, Matthias F., Landsman, Alexandra S., Lucchese, Robert R., Emmanouilidou, Agapi, Marinelli, Agostino, Cryan, James P.
The photoelectric effect is not truly instantaneous, but exhibits attosecond delays that can reveal complex molecular dynamics. Sub-femtosecond duration light pulses provide the requisite tools to resolve the dynamics of photoionization. Accordingly,
Externí odkaz:
http://arxiv.org/abs/2402.12764
Autor:
Champenois, Elio G., List, Nanna H., Ware, Matthew, Britton, Mathew, Bucksbaum, Philip H., Cheng, Xinxin, Centurion, Martin, Cryan, James P., Forbes, Ruaridh, Gabalski, Ian, Hegazy, Kareem, Hoffmann, Matthias C., Howard, Andrew J., Ji, Fuhao, Lin, Ming-Fu, Nunes, J. Pedro, Shen, Xiaozhe, Yang, Jie, Wang, Xijie, Martinez, Todd J., Wolf, Thomas J. A.
Directly imaging structural dynamics involving hydrogen atoms by ultrafast diffraction methods is complicated by their low scattering cross-sections. Here we demonstrate that megaelectronvolt ultrafast electron diffraction is sufficiently sensitive t
Externí odkaz:
http://arxiv.org/abs/2303.03586
Rehybridization dynamics into the pericyclic minimum of an electrcyclic reaction imaged in real-time
Autor:
Liu, Yusong, Sanchez, David M., Ware, Matthew R., Champenois, Elio G., Yang, Jie, Nunes, J. Pedro F., Attar, Andrew, Centurion, Martin, Cryan, James P., Forbes, Ruaridh G., Hegazy, Kareem, Hoffmann, Matthias C., Ji, Fuhao, Lin, Ming-Fu, Luo, Duan, Saha, Sajib K., Shen, Xiaozhe, Wang, Xijie, Martínez, Todd J., Wolf, Thomas J. A.
Electrocyclic reactions are characterized by the concerted formation and cleavage of both {\sigma} and {\pi} bonds through a cyclic structure. This structure is known as a pericyclic transition state for thermal reactions and a pericyclic minimum in
Externí odkaz:
http://arxiv.org/abs/2209.13691
Autor:
Walter, Peter, Osipov, Timur, Lin, Ming-Fu, Cryan, James, Driver, Taran, Kamalov, Andrei, Marinelli, Agostino, Robinson, Joe, Seaberg, Matt, Wolf, Thomas J. A., Aldrich, Jeff, Brown, Nolan, Champenois, Elio G., Cheng, Xinxin, Cocco, Daniele, Conder, Alan, Curiel, Ivan, Egger, Adam, Glownia, James M., Heimann, Philip, Holmes, Michael, Johnson, Tyler, Li, Xiang, Moeller, Stefan, Morton, DanielS, Ng, May Ling, Ninh, Kayla, ONeal, Jordan T., Obaid, Razib, Pai, Allen, Schlotter, William, Shepard, Jackson, Shivaram, Niranjan, Stefan, Peter, Van, Xiong, Wang, Anna Li, Wang, Hengzi, Yin, Jing, Yunus, Sameen, Fritz, David, James, Justin, Castagna, Jean-Charles
Publikováno v:
Journal of Synchrotron Radiation 2022
The newly constructed Time-resolved atomic, Molecular and Optical science instrument (TMO), is configured to take full advantage of both linear accelerators at SLAC National Accelerator Laboratory, the copper accelerator operating at a repetition rat
Externí odkaz:
http://arxiv.org/abs/2112.00863
Autor:
Li, Siqi, Driver, Taran, Rosenberger, Philipp, Champenois, Elio G., Duris, Joseph, Al-Haddad, Andre, Averbukh, Vitali, Barnard, Jonathan C. T., Berrah, Nora, Bostedt, Christoph, Bucksbaum, Philip H., Coffee, Ryan, DiMauro, Louis F., Fang, Li, Garratt, Douglas, Gatton, Averell, Guo, Zhaoheng, Hartmann, Gregor, Haxton, Daniel, Helml, Wolfram, Huang, Zhirong, LaForge, Aaron C., Kamalov, Andrei, Knurr, Jonas, Lin, Ming-Fu, Lutman, Alberto A., MacArthur, James P., Marangos, Jon P., Nantel, Megan, Natan, Adi, Obaid, Razib, O'Neal, Jordan T., Shivaram, Niranjan H., Schori, Aviad, Walter, Peter, Wang, Anna Li, Wolf, Thomas J. A., Zhang, Zhen, Kling, Matthias F., Marinelli, Agostino, Cryan, James P.
In quantum systems, coherent superpositions of electronic states evolve on ultrafast timescales (few femtosecond to attosecond, 1 as = 0.001 fs = 10^{-18} s), leading to a time dependent charge density. Here we exploit the first attosecond soft x-ray
Externí odkaz:
http://arxiv.org/abs/2105.08854
Autor:
Larsen, Kirk A., Rescigno, Thomas N., Severt, Travis, Streeter, Zachary L., Iskandar, Wael, Heck, Saijoscha, Gatton, Averell, Champenois, Elio G., Strom, Richard, Jochim, Bethany, Reedy, Dylan, Call, Demitri, Moshammer, Robert, Dörner, Reinhard, Landers, Allen L., Williams, Joshua B., McCurdy, C. William, Lucchese, Robert R., Ben-Itzhak, Itzik, Slaughter, Daniel S., Weber, Thorsten
Publikováno v:
Phys. Rev. Research 2, 043056 (2020)
We report measurements on the H$^{+}$ + H$^{+}$ fragmentation channel following direct single-photon double ionization of neutral NH$_{3}$ at 61.5 eV, where the two photoelectrons and two protons are measured in coincidence using 3-D momentum imaging
Externí odkaz:
http://arxiv.org/abs/2008.11777
Autor:
Larsen, Kirk A., Rescigno, Thomas N., Streeter, Zachary L., Iskandar, Wael, Heck, Saijoscha, Gatton, Averell, Champenois, Elio G., Severt, Travis, Strom, Richard, Jochim, Bethany, Reedy, Dylan, Call, Demitri, Moshammer, Robert, Dörner, Reinhard, Landers, Allen L., Williams, Joshua B., McCurdy, C. William, Lucchese, Robert R., Ben-Itzhak, Itzik, Slaughter, Daniel S., Weber, Thorsten
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 53, 244003 (2020)
We present state-selective measurements on the NH$_2^{+}$ + H$^{+}$ and NH$^{+}$ + H$^{+}$ + H dissociation channels following single-photon double ionization at 61.5 eV of neutral NH$_{3}$, where the two photoelectrons and two cations are measured i
Externí odkaz:
http://arxiv.org/abs/2008.11775
Autor:
Kramer, Patrick L., Windeler, Matthew, Mecseki, Katalin, Champenois, Elio G., Hoffmann, Matthias C., Tavella, Franz
Manipulating the atomic and electronic structure of matter with strong terahertz (THz) fields while probing the response with ultrafast pulses at x-ray free electron lasers (FELs) has offered unique insights into a multitude of physical phenomena in
Externí odkaz:
http://arxiv.org/abs/2002.05286
Autor:
Thurston, Richard, Brister, Matthew M., Tan, Liang Z., Champenois, Elio G., Bakhti, Said, Muddukrishna, Pavan, Weber, Thorsten, Belkacem, Ali, Slaughter, Daniel S., Shivaram, Niranjan
We investigate ultrafast dynamics of the lowest singlet excited electronic state in liquid nitrobenzene using Ultrafast Transient Polarization Spectroscopy (UTPS), extending the well-known technique of Optical-Kerr Effect (OKE) spectroscopy to excite
Externí odkaz:
http://arxiv.org/abs/1912.12902
Autor:
Driver, Taran, Li, Siqi, Champenois, Elio G., Duris, Joseph, Ratner, Daniel, Lane, TJ, Rosenberger, Philipp, Al-Haddad, Andre, Averbukh, Vitali, Barnard, Toby, Berrah, Nora, Bostedt, Christoph, Bucksbaum, Philip H., Coffee, Ryan, DiMauro, Louis F., Fang, Li, Garratt, Douglas, Gatton, Averell, Guo, Zhaoheng, Hartmann, Gregor, Haxton, Daniel, Helml, Wolfram, Huang, Zhirong, LaForge, Aaron, Kamalov, Andrei, Kling, Matthias F., Knurr, Jonas, Lin, Ming-Fu, Lutman, Alberto A., MacArthur, James P., Marangos, Jon P., Nantel, Megan, Natan, Adi, Obaid, Razib, Shivaram, Niranjan H., Schori, Aviad, Walter, Peter, Wang, Anna, Wolf, Thomas J. A., Marinelli, Agostino, Cryan, James P.
The recent demonstration of isolated attosecond pulses from an X-ray free-electron laser (XFEL) opens the possibility for probing ultrafast electron dynamics at X-ray wavelengths. An established experimental method for probing ultrafast dynamics is X
Externí odkaz:
http://arxiv.org/abs/1909.07441