title: Single Hit Energy-resolved Laue Diffraction.
abstract: In situ white light Laue diffraction has been successfully used to interrogate the structure of single crystal materials undergoing rapid (nanosecond) dynamic compression up to megabar pressures. However, information on strain state accessible via this technique is limited, reducing its applicability for a range of applications. We present an extension to the existing Laue diffraction platform in which we record the photon energy of a subset of diffraction peaks. This allows for a measurement of the longitudinal and transverse strains in situ during compression. Consequently, we demonstrate measurement of volumetric compression of the unit cell, in addition to the limited aspect ratio information accessible in conventional white light Laue. We present preliminary results for silicon, where only an elastic strain is observed. VISAR measurements show the presence of a two wave structure and measurements show that material downstream of the second wave does not contribute to the observed diffraction peaks, supporting the idea that this material may be highly disordered, or has undergone large scale rotation.
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Shamim
authors.initials: S
authors.lastname: Patel
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Suggit
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Paul G
authors.initials: PG
authors.lastname: Stubley
authors.affiliation: Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
authors.forename: James A
authors.initials: JA
authors.lastname: Hawreliak
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Orlando
authors.initials: O
authors.lastname: Ciricosta
authors.affiliation: Atomic Weapons Establishment, Aldermaston, Reading RG7 4PR, United Kingdom.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Comley
authors.affiliation: Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
authors.forename: Gilbert W
authors.initials: GW
authors.lastname: Collins
authors.affiliation: Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
authors.forename: Jon H
authors.initials: JH
authors.lastname: Eggert
authors.affiliation: Atomic Weapons Establishment, Aldermaston, Reading RG7 4PR, United Kingdom.
authors.forename: John M
authors.initials: JM
authors.lastname: Foster
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Justin S
authors.initials: JS
authors.lastname: Wark
authors.affiliation: Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
authors.forename: Andrew
authors.initials: A
authors.lastname: Higginbotham