X-ray split and delay device for ultrafast x-ray science at the AMO instrument at LCLS

29th International Conference on Photonic, Electronic, and Atomic Collisions

Bozek, J.D.^1 ; Castagna, J.C.^2 ; Fang, L.^3 ; Hui, Z.^4 ; Kukk, E.^5 ; Murphy, B.F.^4 ; Berrah, N.^6

Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin BP 48, Gif-sur-Yvette Cedex

91192, France^1

LCLS, SLAC National Accelerator Laboratory, Menlo Park

CA

94025, United States^2

Center for High Energy Density Science, University of Texas at Austin, Austin

TX

78712, United States^3

Physics Department, Western Michigan University, Kalamazoo

MI

49008, United States^4

Department of Physics and Astronomy, University of Turku, Turku

FI-20014, Finland^5

Physics Department, University of Connecticut, Storrs

CT

06269, United States^6

关键词: Antibonding orbital;    Inner-shell electrons;    Photon energy range;    Pump-probe technique;    Synchrotron studies;    Variable delays;    X-ray free electron lasers;    X-ray science;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/1/012018/pdf
DOI  :  10.1088/1742-6596/635/1/012018

来源: IOP

【 摘 要 】

Ultrafast molecular dynamics can be studied using x-rays from both synchrotrons sources and x-ray free electron lasers. Synchrotron studies are limited by the 10-100 ps duration pulses to processes where the Auger lifetime can be used to probe dynamics initiated by excitation of an inner-shell electron to an antibonding orbital. The short pulses produced by x-ray free electron lasers offer the opportunity to study molecular dynamics directly with pump-probe techniques. A two-mirror x-ray split and delay device has been developed for x- ray pump - x-ray probe experiments at the soft x-ray AMO instrument at the LCLS. The device operates over a photon energy range of 250-1800 eV with a variable delay of up to 200 femtoseconds with 0.1 fs resolution.