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.

doi:10.1107/S1600577515001770

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

Journal Article · Thu Apr 02 00:00:00 EDT 2015 · Journal of Synchrotron Radiation (Online)

DOI:https://doi.org/10.1107/S1600577515001770· OSTI ID:1213441

Hertlein, M. P. ^[1]; Scholl, A. ^[1]; Cordones, A. A. ^[1]; Lee, J. H. ^[1]; Engelhorn, K. ^[1]; Glover, T. E. ^[1]; Barbrel, B. ^[2]; Sun, C. ^[1]; Steier, C. ^[1]; Portmann, G. ^[1]; Robin, D. S. ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Univ. of California, Berkeley, CA (United States). Dept. of Physics.

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.

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1213441

Alternate ID(s):: OSTI ID: 22437370

Journal Information:: Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Journal Issue: 3 Vol. 22; ISSN 1600-5775; ISSN JSYRES

Publisher:: International Union of CrystallographyCopyright Statement

Country of Publication:: United States

Language:: English

References (10)

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A grazing incidence x-ray streak camera for ultrafast, single-shot measurements Feng, J.; Engelhorn, K.; Cho, B. I. Applied Physics Letters, Vol. 96, Issue 13 https://doi.org/10.1063/1.3371810	journal	March 2010
Pseudo-Single-Bunch with Adjustable Frequency Sun, C.; Portmann, G.; Hertlein, M. Synchrotron Radiation News, Vol. 26, Issue 3 https://doi.org/10.1080/08940886.2013.791209	journal	May 2013
Time-resolved demagnetization of Co ₂ MnSi observed using x-ray magnetic circular dichroism and an ultrafast streak camera Opachich, Y. P.; Comin, A.; Bartelt, A. F. Journal of Physics: Condensed Matter, Vol. 22, Issue 15 https://doi.org/10.1088/0953-8984/22/15/156003	journal	March 2010
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A High-Precision Gated Integrator for Repetitive Pulsed Signals Acquisition Pettinato, Sara; Orsini, Andrea; Girolami, Marco Electronics, Vol. 8, Issue 11 https://doi.org/10.3390/electronics8111231	journal	October 2019

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43 PARTICLE ACCELERATORS
X-ray pulse picking
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bunch kicking
laser/X-ray measurements
pseudo single bunch
pump–probe spectroscopy
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X-rays only when you want them: Optimized pump–probe experiments using pseudo-single-bunch operation

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References (10)

Cited By (1)

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