Andrew James Morgan

3D diffractive imaging of nanoparticle ensembles using an x-ray laser

Kartik Ayyer, P Lourdu Xavier, Johan Bielecki, Zhou Shen, Benedikt J Daurer, Amit K Samanta, Salah Awel, Richard Bean, Anton Barty, Martin Bergemann, Tomas Ekeberg, Armando D Estillore, Hans Fangohr, Klaus Giewekemeyer, Mark S Hunter, Mikhail Karnevskiy, Richard A Kirian, Henry Kirkwood, Yoonhee Kim, Jayanath Koliyadu, et al.

Journal article  |  2021  |  OPTICA

Single particle imaging at x-ray free electron lasers (XFELs) has the potential to determine the structure and dynamics of single ..

Macromolecular phasing using diffraction from multiple crystal forms

Markus Metz, Romain D Arnal, Wolfgang Brehm, Henry N Chapman, Andrew J Morgan, Rick P Millane

Journal article  |  2021  |  ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES

A phasing algorithm for macromolecular crystallography is proposed that utilizes diffraction data from multiple crystal forms - cr..

speckle-tracking: a software suite for ptychographic X-ray speckle tracking

Andrew J Morgan, Kevin T Murray, Harry M Quiney, Sasa Bajt, Henry N Chapman

Journal article  |  2020  |  JOURNAL OF APPLIED CRYSTALLOGRAPHY

In recent years, X-ray speckle-tracking techniques have emerged as viable tools for wavefront metrology and sample imaging applica..

Diffraction data from aerosolized Coliphage PR772 virus particles imaged with the Linac Coherent Light Source

Haoyuan Li, Reza Nazari, Brian Abbey, Roberto Alvarez, Andrew Aquila, Kartik Ayyer, Anton Barty, Peter Berntsen, Johan Bielecki, Alberto Pietrini, Maximilian Bucher, Gabriella Carini, Henry N Chapman, Alice Contreras, Benedikt J Daurer, Hasan DeMirci, Leonie Fluckiger, Matthias Frank, Janos Hajdu, Max F Hantke, et al.

Journal article  |  2020  |  SCIENTIFIC DATA

Single Particle Imaging (SPI) with intense coherent X-ray pulses from X-ray free-electron lasers (XFELs) has the potential to prod..

Effect of radiation damage and illumination variability on signal-to-noise ratio in X-ray free-electron laser single-particle imaging

Timur E Gureyev, Alexander Kozlov, Andrew J Morgan, Andrew Martin, Harry M Quiney

Journal article  |  2020  |  ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES

The deterioration of both the signal-to-noise ratio and the spatial resolution in the electron-density distribution reconstructed ..

Segmented flow generator for serial crystallography at the European X-ray free electron laser.

Austin Echelmeier, Jorvani Cruz Villarreal, Marc Messerschmidt, Daihyun Kim, Jesse D Coe, Darren Thifault, Sabine Botha, Ana Egatz-Gomez, Sahir Gandhi, Gerrit Brehm, Chelsie E Conrad, Debra T Hansen, Caleb Madsen, Saša Bajt, J Domingo Meza-Aguilar, Dominik Oberthür, Max O Wiedorn, Holger Fleckenstein, Derek Mendez, Juraj Knoška, et al.

Journal article  |  2020  |  Nature Communications

Serial femtosecond crystallography (SFX) with X-ray free electron lasers (XFELs) allows structure determination of membrane protei..

Ptychographic X-ray speckle tracking with multi-layer Laue lens systems

Andrew J Morgan, Kevin T Murray, Mauro Prasciolu, Holger Fleckenstein, Oleksandr Yefanov, Pablo Villanueva-Perez, Valerio Mariani, Martin Domaracky, Manuela Kuhn, Steve Aplin, Istvan Mohacsi, Marc Messerschmidt, Karolina Stachnik, Yang Du, Anja Burkhart, Alke Meents, Evgeny Nazaretski, Hanfei Yan, Xiaojing Huang, Yong S Chu, et al.

Journal article  |  2020  |  JOURNAL OF APPLIED CRYSTALLOGRAPHY

The ever-increasing brightness of synchrotron radiation sources demands improved X-ray optics to utilize their capability for imag..

Ptychographic X-ray speckle tracking

Andrew J Morgan, Harry M Quiney, Sasa Bajt, Henry N Chapman

Journal article  |  2020  |  JOURNAL OF APPLIED CRYSTALLOGRAPHY

A method is presented for the measurement of the phase gradient of a wavefront by tracking the relative motion of speckles in proj..

X-ray diffractive imaging of controlled gas-phase molecules: Toward imaging of dynamics in the molecular frame

Thomas Kierspel, Andrew Morgan, Joss Wiese, Terry Mullins, Andy Aquila, Anton Barty, Richard Bean, Rebecca Boll, Sebastien Boutet, Philip Bucksbaum, Henry N Chapman, Lauge Christensen, Alan Fry, Mark Hunter, Jason E Koglin, Mengning Liang, Valerio Mariani, Adi Natan, Joseph Robinson, Daniel Rolles, et al.

Journal article  |  2020  |  JOURNAL OF CHEMICAL PHYSICS

We report experimental results on the diffractive imaging of three-dimensionally aligned 2,5-diiodothiophene molecules. The molecu..

Low-signal limit of X-ray single particle diffractive imaging

Kartik Ayyer, Andrew J Morgan, Andrew Aquila, Hasan DeMirci, Brenda G Hogue, Richard A Kirian, P Lourdu Xavier, Chun Hong Yoon, Henry N Chapman, Anton Barty

Journal article  |  2019  |  OPTICS EXPRESS

An outstanding question in X-ray single particle imaging experiments has been the feasibility of imaging sub 10-nm-sized biomolecu..