skip to main content

DOE PAGESDOE PAGES

Title: 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 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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States). Dept. of Physics.
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Journal of Synchrotron Radiation (Online)
Additional Journal Information:
Journal Name: Journal of Synchrotron Radiation (Online); Journal Volume: 22; Journal Issue: 3; Journal ID: ISSN 1600-5775
Publisher:
International Union of Crystallography
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; pump–probe spectroscopy; bunch kicking; pseudo single bunch; X-ray pulse picking; time-resolved X-ray spectroscopy; sample damage; laser/X-ray measurements; X-ray streak camera
OSTI Identifier:
1213441

Hertlein, M. P., Scholl, A., Cordones, A. A., Lee, J. H., Engelhorn, K., Glover, T. E., Barbrel, B., Sun, C., Steier, C., Portmann, G., and Robin, D. S.. X-rays only when you want them: Optimized pump–probe experiments using pseudo-single-bunch operation. United States: N. p., Web. doi:10.1107/S1600577515001770.
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. United States. doi:10.1107/S1600577515001770.
Hertlein, M. P., Scholl, A., Cordones, A. A., Lee, J. H., Engelhorn, K., Glover, T. E., Barbrel, B., Sun, C., Steier, C., Portmann, G., and Robin, D. S.. 2015. "X-rays only when you want them: Optimized pump–probe experiments using pseudo-single-bunch operation". United States. doi:10.1107/S1600577515001770. https://www.osti.gov/servlets/purl/1213441.
@article{osti_1213441,
title = {X-rays only when you want them: Optimized pump–probe experiments using pseudo-single-bunch operation},
author = {Hertlein, M. P. and Scholl, A. and Cordones, A. A. and Lee, J. H. and Engelhorn, K. and Glover, T. E. and Barbrel, B. and Sun, C. and Steier, C. and Portmann, G. and Robin, D. S.},
abstractNote = {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.},
doi = {10.1107/S1600577515001770},
journal = {Journal of Synchrotron Radiation (Online)},
number = 3,
volume = 22,
place = {United States},
year = {2015},
month = {4}
}