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X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation

Laser pump–X-ray probe experiments require control over the X-ray pulse pattern and timing. Here, the first use of pseudo-single-bunch mode at the Advanced Light Source in picosecond time-resolved X-ray absorption experiments on solutions and solids is reported. In this mode the X-ray repetition rat...

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Autores principales: Hertlein, M. P., Scholl, A., Cordones, A. A., Lee, J. H., Engelhorn, K., Glover, T. E., Barbrel, B., Sun, C., Steier, C., Portmann, G., Robin, D. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4416684/
https://www.ncbi.nlm.nih.gov/pubmed/25931090
http://dx.doi.org/10.1107/S1600577515001770
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author Hertlein, M. P.
Scholl, A.
Cordones, A. A.
Lee, J. H.
Engelhorn, K.
Glover, T. E.
Barbrel, B.
Sun, C.
Steier, C.
Portmann, G.
Robin, D. S.
author_facet Hertlein, M. P.
Scholl, A.
Cordones, A. A.
Lee, J. H.
Engelhorn, K.
Glover, T. E.
Barbrel, B.
Sun, C.
Steier, C.
Portmann, G.
Robin, D. S.
author_sort Hertlein, M. P.
collection PubMed
description Laser pump–X-ray probe experiments require control over the X-ray pulse pattern and timing. Here, the first use of pseudo-single-bunch mode at the Advanced Light Source in picosecond time-resolved X-ray absorption experiments on solutions and solids is reported. In this mode the X-ray repetition rate is fully adjustable from single shot to 500 kHz, allowing it to be matched to typical laser excitation pulse rates. Suppressing undesired X-ray pulses considerably reduces detector noise and improves signal to noise in time-resolved experiments. In addition, dose-induced sample damage is considerably reduced, easing experimental setup and allowing the investigation of less robust samples. Single-shot X-ray exposures of a streak camera detector using a conventional non-gated charge-coupled device (CCD) camera are also demonstrated.
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spelling pubmed-44166842015-05-20 X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation Hertlein, M. P. Scholl, A. Cordones, A. A. Lee, J. H. Engelhorn, K. Glover, T. E. Barbrel, B. Sun, C. Steier, C. Portmann, G. Robin, D. S. J Synchrotron Radiat Research Papers Laser pump–X-ray probe experiments require control over the X-ray pulse pattern and timing. Here, the first use of pseudo-single-bunch mode at the Advanced Light Source in picosecond time-resolved X-ray absorption experiments on solutions and solids is reported. In this mode the X-ray repetition rate is fully adjustable from single shot to 500 kHz, allowing it to be matched to typical laser excitation pulse rates. Suppressing undesired X-ray pulses considerably reduces detector noise and improves signal to noise in time-resolved experiments. In addition, dose-induced sample damage is considerably reduced, easing experimental setup and allowing the investigation of less robust samples. Single-shot X-ray exposures of a streak camera detector using a conventional non-gated charge-coupled device (CCD) camera are also demonstrated. International Union of Crystallography 2015-04-02 /pmc/articles/PMC4416684/ /pubmed/25931090 http://dx.doi.org/10.1107/S1600577515001770 Text en © M. P. Hertlein et al. 2015 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Hertlein, M. P.
Scholl, A.
Cordones, A. A.
Lee, J. H.
Engelhorn, K.
Glover, T. E.
Barbrel, B.
Sun, C.
Steier, C.
Portmann, G.
Robin, D. S.
X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
title X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
title_full X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
title_fullStr X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
title_full_unstemmed X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
title_short X-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
title_sort x-rays only when you want them: optimized pump–probe experiments using pseudo-single-bunch operation
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4416684/
https://www.ncbi.nlm.nih.gov/pubmed/25931090
http://dx.doi.org/10.1107/S1600577515001770
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