Search Results - "Epp, S. W"

Ultrafast charge rearrangement and nuclear dynamics upon inner-shell multiple ionization of small polyatomic molecules by Erk, B, Rolles, D, Foucar, L, Rudek, B, Epp, S W, Cryle, M, Bostedt, C, Schorb, S, Bozek, J, Rouzee, A, Hundertmark, A, Marchenko, T, Simon, M, Filsinger, F, Christensen, L, De, S, Trippel, S, Küpper, J, Stapelfeldt, H, Wada, S, Ueda, K, Swiggers, M, Messerschmidt, M, Schröter, C D, Moshammer, R, Schlichting, I, Ullrich, J, Rudenko, A

“…Ionization and fragmentation of methylselenol (CH(3)SeH) molecules by intense (>10(17) W/cm(2)) 5 fs x-ray pulses (ħω=2 keV) are studied by coincident ion…”
Get full text

Fixed target matrix for femtosecond time-resolved and in situ serial micro-crystallography by Mueller, C, Marx, A, Epp, S W, Zhong, Y, Kuo, A, Balo, A R, Soman, J, Schotte, F, Lemke, H T, Owen, R L, Pai, E F, Pearson, A R, Olson, J S, Anfinrud, P A, Ernst, O P, Dwayne Miller, R J

“…We present a crystallography chip enabling in situ room temperature crystallography at microfocus synchrotron beamlines and X-ray free-electron laser (X-FEL)…”
Get full text

Soft x-ray laser spectroscopy on trapped highly charged ions at FLASH by Epp, S W, López-Urrutia, J R Crespo, Brenner, G, Mäckel, V, Mokler, P H, Treusch, R, Kuhlmann, M, Yurkov, M V, Feldhaus, J, Schneider, J R, Wellhöfer, M, Martins, M, Wurth, W, Ullrich, J

“…In a proof-of-principle experiment, we demonstrate high-resolution resonant laser excitation in the soft x-ray region at 48.6 eV of the 2 (2)S(1/2) to 2…”
Get full text

Spatial Distortion of Vibration Modes via Magnetic Correlation of Impurities by Krasniqi, F S, Zhong, Y, Epp, S W, Foucar, L, Trigo, M, Chen, J, Reis, D A, Wang, H L, Zhao, J H, Lemke, H T, Zhu, D, Chollet, M, Fritz, D M, Hartmann, R, Englert, L, Strüder, L, Schlichting, I, Ullrich, J

“…Long wavelength vibrational modes in the ferromagnetic semiconductor Ga_{0.91}Mn_{0.09}As are investigated using time resolved x-ray diffraction. At room…”
Get full text

Experimental Investigations of Ion Charge Distributions, Effective Electron Densities, and Electron-Ion Cloud Overlap in Electron Beam Ion Trap Plasma Using Extreme-Ultraviolet Spectroscopy by Liang, G. Y, Crespo López-Urrutia, J. R, Baumann, T. M, Epp, S. W, Gonchar, A, Lapierre, A, Mokler, P. H, Simon, M. C, Tawara, H, Mäckel, V, Yao, K, Zhao, G, Zou, Y, Ullrich, J

“…Spectra in the extreme ultraviolet range from 107 to 353 A emitted from Fe ions in various ionization stages have been observed at the Heidelberg electron beam…”
Get full text

Time zero determination for FEL pump-probe studies based on ultrafast melting of bismuth by Epp, S. W., Hada, M., Zhong, Y., Kumagai, Y., Motomura, K., Mizote, S., Ono, T., Owada, S., Axford, D., Bakhtiarzadeh, S., Fukuzawa, H., Hayashi, Y., Katayama, T., Marx, A., Müller-Werkmeister, H. M., Owen, R. L., Sherrell, D. A., Tono, K., Ueda, K., Westermeier, F., Miller, R. J. D.

“…A common challenge for pump-probe studies of structural dynamics at X-ray free-electron lasers (XFELs) is the determination of time zero (T0)—the time an…”
Get full text

Comment on "Testing three-body quantum electrodynamics with trapped Ti20+ ions: evidence for a Z-dependent divergence between experiment and calculation" by Epp, S W

Get full text

An unexpectedly low oscillator strength as the origin of the Fexvii emission problem by Bernitt, S, Brown, G V, Rudolph, J K, Steinbruegge, R, Graf, A, Leutenegger, M, Epp, S W, Eberle, S, Kubicek, K, Maeckel, V, Simon, M C, Traebert, E, Magee, E W, Beilmann, C, Hell, N, Schippers, S, Mueller, A, Kahn, S M, Surzhykov, A, Harman, Z, Keitel, CH, Clementson, J, Porter, F S, Schlotter, W, Turner, J J, Ullrich, J, Beiersdorfer, P, Lopez-Urrutia, JRCrespo

“…Highly charged iron (Fe super(16+), here referred to as Fexvii) produces some of the brightest X-ray emission lines from hot astrophysical objects, including…”
Get full text

X-ray resonant photoexcitation: linewidths and energies of Kα transitions in highly charged Fe ions by Rudolph, J K, Bernitt, S, Epp, S W, Steinbrügge, R, Beilmann, C, Brown, G V, Eberle, S, Graf, A, Harman, Z, Hell, N, Leutenegger, M, Müller, A, Schlage, K, Wille, H-C, Yavaş, H, Ullrich, J, Crespo López-Urrutia, J R

“…Photoabsorption by and fluorescence of the Kα transitions in highly charged iron ions are essential mechanisms for x-ray radiation transfer in astrophysical…”
Get full text

Femtosecond photoelectron diffraction on laser-aligned molecules: Towards time-resolved imaging of molecular structure by Boll, R., Anielski, D., Bostedt, C., Bozek, J. D., Christensen, L., Coffee, R., De, S., Decleva, P., Epp, S. W., Erk, B., Foucar, L., Krasniqi, F., Küpper, J., Rouzée, A., Rudek, B., Rudenko, A., Schorb, S., Stapelfeldt, H., Stener, M., Stern, S., Techert, S., Trippel, S., Vrakking, M. J. J., Ullrich, J., Rolles, D.

Get full text

An unexpectedly low oscillator strength as the origin of the Fe xvii emission problem by Bernitt, S., Brown, G. V., Rudolph, J. K., Steinbrügge, R., Graf, A., Leutenegger, M., Epp, S. W., Eberle, S., Kubiček, K., Mäckel, V., Simon, M. C., Träbert, E., Magee, E. W., Beilmann, C., Hell, N., Schippers, S., Müller, A., Kahn, S. M., Surzhykov, A., Harman, Z., Keitel, C. H., Clementson, J., Porter, F. S., Schlotter, W., Turner, J. J., Ullrich, J., Beiersdorfer, P., López-Urrutia, J. R. Crespo

“…Fluorescence of iron ions induced by an X-ray laser allows the relative oscillator strength for Fe xvii emission to be determined; it is found to differ by 3.6…”
Get full text

Extreme-Ultraviolet Spectroscopy of Fe VI-Fe XV and its Diagnostic Application for Electron Beam Ion Trap Plasmas by Liang, G. Y, Baumann, T. M, López-Urrutia, J. R. Crespo, Epp, S. W, Tawara, H, Gonchar, A, Mokler, P. H, Zhao, G, Ullrich, J

“…Extreme-ultraviolet spectra of intermediately ionized iron ions (Fe VI-Fe XIV) in the wavelength range of 125.0-265.0 A have been measured at the Heidelberg…”
Get full text

Resonant and near-threshold photoionization cross sections of Fe14 by Simon, M C, López-Urrutia, J R Crespo, Beilmann, C, Schwarz, M, Harman, Z, Epp, S W, Schmitt, B L, Baumann, T M, Behar, E, Bernitt, S, Follath, R, Ginzel, R, Keitel, C H, Klawitter, R, Kubiček, K, Mäckel, V, Mokler, P H, Reichardt, G, Schwarzkopf, O, Ullrich, J

“…Photoionization (PI) of Fe14+ in the range from 450 to 1100 eV was measured at the BESSY II storage ring using an electron beam ion trap achieving high…”
Get full text

Studies of highly charged iron ions using electron beam ion traps for interpreting astrophysical spectra by Brown, G V, Beilmann, C, Bernitt, S, Clementson, J, Eberle, S, Epp, S W, Graf, A, Hell, N, Kelley, R L, Kilbourne, C A, Kubi ek, K, Leutenegger, M A, Mäckel, V, Porter, F S, Rudolph, J K, Simon, M C, Steinbrügge, R, Träbert, E, Ullrich, J, Crespo López-Urrutia, J R, Beiersdorfer, P

“…For over a decade, the x-ray astrophysics community has enjoyed a fruitful epoch of discovery largely as a result of the successful launch and operation of the…”
Get full text

Comment on “Testing Three-Body Quantum Electrodynamics with Trapped Ti 20 + Ions: Evidence for a Z -Dependent Divergence Between Experiment and Calculation” by Epp, S. W.

Get full text

Shapes and vorticities of superfluid helium nanodroplets by Gomez, Luis F., Ferguson, Ken R., Cryan, James P., Bacellar, Camila, Tanyag, Rico Mayro P., Jones, Curtis, Schorb, Sebastian, Anielski, Denis, Belkacem, Ali, Bernando, Charles, Boll, Rebecca, Bozek, John, Carron, Sebastian, Chen, Gang, Delmas, Tjark, Englert, Lars, Epp, Sascha W., Erk, Benjamin, Foucar, Lutz, Hartmann, Robert, Hexemer, Alexander, Huth, Martin, Kwok, Justin, Leone, Stephen R., Ma, Jonathan H. S., Maia, Filipe R. N. C., Malmerberg, Erik, Marchesini, Stefano, Neumark, Daniel M., Poon, Billy, Prell, James, Rolles, Daniel, Rudek, Benedikt, Rudenko, Artem, Seifrid, Martin, Siefermann, Katrin R., Sturm, Felix P., Swiggers, Michele, Ullrich, Joachim, Weise, Fabian, Zwart, Petrus, Bostedt, Christoph, Gessner, Oliver, Vilesov, Andrey F.

“…Helium nanodroplets are considered ideal model systems to explore quantum hydrodynamics in self-contained, isolated superfluids. However, exploring the dynamic…”
Get full text

Nanoscale spin reversal by non-local angular momentum transfer following ultrafast laser excitation in ferrimagnetic GdFeCo by Graves, C. E., Reid, A. H., Wang, T., Wu, B., de Jong, S., Vahaplar, K., Radu, I., Bernstein, D. P., Messerschmidt, M., Müller, L., Coffee, R., Bionta, M., Epp, S. W., Hartmann, R., Kimmel, N., Hauser, G., Hartmann, A., Holl, P., Gorke, H., Mentink, J. H., Tsukamoto, A., Fognini, A., Turner, J. J., Schlotter, W. F., Rolles, D., Soltau, H., Strüder, L., Acremann, Y., Kimel, A. V., Kirilyuk, A., Rasing, Th, Stöhr, J., Scherz, A. O., Dürr, H. A.

“…The dynamics of thin magnetic films revealed by ultrafast laser techniques cannot be explained by standard equilibrium descriptions. Diffraction experiments…”
Get full text

Fractal morphology, imaging and mass spectrometry of single aerosol particles in flight by Loh, N. D., Hampton, C. Y., Martin, A. V., Starodub, D., Sierra, R. G., Barty, A., Aquila, A., Schulz, J., Lomb, L., Steinbrener, J., Shoeman, R. L., Kassemeyer, S., Bostedt, C., Bozek, J., Epp, S. W., Erk, B., Hartmann, R., Rolles, D., Rudenko, A., Rudek, B., Foucar, L., Kimmel, N., Weidenspointner, G., Hauser, G., Holl, P., Pedersoli, E., Liang, M., Hunter, M. S., Gumprecht, L., Coppola, N., Wunderer, C., Graafsma, H., Maia, F. R. N. C., Ekeberg, T., Hantke, M., Fleckenstein, H., Hirsemann, H., Nass, K., White, T. A., Tobias, H. J., Farquar, G. R., Benner, W. H., Hau-Riege, S. P., Reich, C., Hartmann, A., Soltau, H., Marchesini, S., Bajt, S., Barthelmess, M., Bucksbaum, P., Hodgson, K. O., Strüder, L., Ullrich, J., Frank, M., Schlichting, I., Chapman, H. N., Bogan, M. J.

“…Intense, coherent X-ray pulses from a free-electron laser can be used to obtain high-resolution morphology of individual sub-micrometre particles in their…”
Get full text

Nanoplasma dynamics of single large xenon clusters irradiated with superintense x-ray pulses from the linac coherent light source free-electron laser by Gorkhover, T, Adolph, M, Rupp, D, Schorb, S, Epp, S W, Erk, B, Foucar, L, Hartmann, R, Kimmel, N, Kühnel, K-U, Rolles, D, Rudek, B, Rudenko, A, Andritschke, R, Aquila, A, Bozek, J D, Coppola, N, Erke, T, Filsinger, F, Gorke, H, Graafsma, H, Gumprecht, L, Hauser, G, Herrmann, S, Hirsemann, H, Hömke, A, Holl, P, Kaiser, C, Krasniqi, F, Meyer, J-H, Matysek, M, Messerschmidt, M, Miessner, D, Nilsson, B, Pietschner, D, Potdevin, G, Reich, C, Schaller, G, Schmidt, C, Schopper, F, Schröter, C D, Schulz, J, Soltau, H, Weidenspointner, G, Schlichting, I, Strüder, L, Ullrich, J, Möller, T, Bostedt, C

“…The plasma dynamics of single mesoscopic Xe particles irradiated with intense femtosecond x-ray pulses exceeding 10(16)  W/cm2 from the Linac Coherent Light…”
Get full text

Noise-robust coherent diffractive imaging with a single diffraction pattern by Martin, A. V., Wang, F., Loh, N. D., Ekeberg, T., Maia, F. R. N. C., Hantke, M., van der Schot, G., Hampton, C. Y., Sierra, R. G., Aquila, A., Bajt, S., Barthelmess, M., Bostedt, C., Bozek, J. D., Coppola, N., Epp, S. W., Erk, B., Fleckenstein, H., Foucar, L., Frank, M., Graafsma, H., Gumprecht, L., Hartmann, A., Hartmann, R., Hauser, G., Hirsemann, H., Holl, P., Kassemeyer, S., Kimmel, N., Liang, M., Lomb, L., Marchesini, S., Nass, K., Pedersoli, E., Reich, C., Rolles, D., Rudek, B., Rudenko, A., Schulz, J., Shoeman, R. L., Soltau, H., Starodub, D., Steinbrener, J., Stellato, F., Strüder, L., Ullrich, J., Weidenspointner, G., White, T. A., Wunderer, C. B., Barty, A., Schlichting, I., Bogan, M. J., Chapman, H. N.

“…The resolution of single-shot coherent diffractive imaging at X-ray free-electron laser facilities is limited by the low signal-to-noise level of diffraction…”
Get full text