H
H. Fleckenstein
Researcher at University of Hamburg
Publications - 11
Citations - 535
H. Fleckenstein is an academic researcher from University of Hamburg. The author has contributed to research in topics: Laser & Particle. The author has an hindex of 8, co-authored 11 publications receiving 461 citations.
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Journal ArticleDOI
Fractal morphology, imaging and mass spectrometry of single aerosol particles in flight
N. D. Loh,Christina Y. Hampton,Andrew V. Martin,Dmitri Starodub,Raymond G. Sierra,Anton Barty,Andrew Aquila,Joachim Schulz,Lukas Lomb,Jan Steinbrener,Robert L. Shoeman,Stephan Kassemeyer,Christoph Bostedt,John D. Bozek,Sascha W. Epp,Benjamin Erk,Raimo Hartmann,Daniel Rolles,Artem Rudenko,Benedikt Rudek,Lutz Foucar,Nils Kimmel,Georg Weidenspointner,Günter Hauser,Peter Holl,Emanuele Pedersoli,Mengning Liang,M. M. Hunter,Lars Gumprecht,Nicola Coppola,Cornelia B. Wunderer,H. Graafsma,Filipe R. N. C. Maia,Tomas Ekeberg,Max F. Hantke,H. Fleckenstein,Helmut Hirsemann,Karol Nass,Thomas A. White,Herbert J. Tobias,George R. Farquar,W. H. Benner,Stefan P. Hau-Riege,Christian Reich,Andreas Hartmann,Heike Soltau,Stefano Marchesini,Saša Bajt,Miriam Barthelmess,Philip H. Bucksbaum,Keith O. Hodgson,Lothar Strüder,Joachim Ullrich,Matthias Frank,Ilme Schlichting,Henry N. Chapman,Michael J. Bogan +56 more
TL;DR: In this article, an in situ method for imaging individual sub-micrometre-sized particles to nanometre resolution in flight using intense X-ray pulses from the Linac Coherent Light Source free-electron laser is presented.
Journal ArticleDOI
Unsupervised classification of single-particle X-ray diffraction snapshots by spectral clustering
Chun Hong Yoon,Peter Schwander,Chantal Abergel,Inger Andersson,Jakob Andreasson,Andrew Aquila,Saša Bajt,Miriam Barthelmess,Anton Barty,Michael J. Bogan,Christoph Bostedt,John D. Bozek,Henry N. Chapman,Jean-Michel Claverie,Nicola Coppola,Daniel P. DePonte,Tomas Ekeberg,Sascha W. Epp,Benjamin Erk,H. Fleckenstein,Lutz Foucar,Heinz Graafsma,Lars Gumprecht,Janos Hajdu,Christina Y. Hampton,Andreas Hartmann,Elisabeth Hartmann,Robert Hartmann,Günter Hauser,Helmut Hirsemann,Peter Holl,Stephan Kassemeyer,Nils Kimmel,Maya Kiskinova,Mengning Liang,N. D. Loh,Lukas Lomb,Filipe R. N. C. Maia,Andrew V. Martin,Karol Nass,Emanuele Pedersoli,Christian Reich,Daniel Rolles,Benedikt Rudek,Artem Rudenko,Ilme Schlichting,Joachim Schulz,M.M. Seibert,Virginie Seltzer,Robert L. Shoeman,Raymond G. Sierra,Heike Soltau,Dmitri Starodub,Jan Steinbrener,Gunter Stier,Lothar Strüder,Martin Svenda,Joachim Ullrich,Georg Weidenspointner,Thomas A. White,Cornelia B. Wunderer,Abbas Ourmazd +61 more
TL;DR: This work presents an unsupervised method able to sort experimental snapshots without recourse to templates, specific noise models, or user-directed learning and shows 90% agreement with manual classification.
Journal ArticleDOI
Noise-robust coherent diffractive imaging with a single diffraction pattern
Andrew V. Martin,Fenglin Wang,N. D. Loh,Tomas Ekeberg,Filipe R. N. C. Maia,Max F. Hantke,G. Van Der Schot,Christina Y. Hampton,Raymond G. Sierra,Andrew Aquila,Saša Bajt,Miriam Barthelmess,Christoph Bostedt,John D. Bozek,Nicola Coppola,Sascha W. Epp,Benjamin Erk,H. Fleckenstein,Lutz Foucar,Matthias Frank,H. Graafsma,Lars Gumprecht,Andreas Hartmann,Raimo Hartmann,Günter Hauser,Helmut Hirsemann,Peter Holl,Stephan Kassemeyer,Nils Kimmel,Mengning Liang,Lukas Lomb,Stefano Marchesini,Karol Nass,Emanuele Pedersoli,Christian Reich,Daniel Rolles,Benedikt Rudek,Artem Rudenko,Joachim Schulz,Robert L. Shoeman,Heike Soltau,Dmitri Starodub,Jan Steinbrener,Francesco Stellato,Lothar Strüder,J. Ullrich,Georg Weidenspointner,Thomas A. White,Cornelia B. Wunderer,Anton Barty,Ilme Schlichting,Michael J. Bogan,Henry N. Chapman +52 more
TL;DR: In this article, the authors modify iterative reconstruction methods to improve tolerance to noise in single-shot coherent diffractive imaging at X-ray free-electron laser facilities, which is limited by the low signal-to-noise level of diffraction data at high scattering angles.
Journal ArticleDOI
Invited Article: Coherent imaging using seeded free-electron laser pulses with variable polarization: First results and research opportunities
Flavio Capotondi,Emanuele Pedersoli,Nicola Mahne,Ralf Hendrik Menk,G. Passos,Lorenzo Raimondi,C. Svetina,G. Sandrin,Marco Zangrando,Maya Kiskinova,Saša Bajt,Miriam Barthelmess,H. Fleckenstein,Henry N. Chapman,Joachim Schulz,J. Bach,Robert Frömter,S. Schleitzer,Leonard Müller,Christian Gutt,Gerhard Grübel +20 more
TL;DR: The performance of the FERMI FEL source and the experimental station meets the requirements of CDI, holography, and resonant magnetic scattering in both multi- and single-shot modes and the first magnetic scattering experiments employing the fully circularly polarized FER MI pulses are presented.
Journal ArticleDOI
Simple convergent-nozzle aerosol injector for single-particle diffractive imaging with X-ray free-electron lasers.
Richard A. Kirian,Salah Awel,Niko Eckerskorn,H. Fleckenstein,Max O. Wiedorn,Luigi Adriano,Saša Bajt,Miriam Barthelmess,Richard Bean,Kenneth R. Beyerlein,Leonard M. G. Chavas,M. Domaracky,Michael Heymann,Daniel A. Horke,Juraj Knoska,Markus Metz,Andrew J. Morgan,Dominik Oberthuer,Nils Roth,Tokushi Sato,Paulraj Lourdu Xavier,Paulraj Lourdu Xavier,O. Yefanov,Andrei Rode,Jochen Küpper,Henry N. Chapman +25 more
TL;DR: This work considers the use of a simple convergent-orifice nozzle for producing tightly focused beams of particles and shows that 0.5 μm particles can be focused to a full-width at half maximum diameter of 4.2 μm.