Calibrated Time-Resolved Transmission Grating Spectrometer for the Study of Ultrafast X-Ray Sources

Article type: Research Article

Authors: Pelletier, J. F. | Chaker, M. | Kieffer, J. C.

Affiliations: INRS-Énergie et Matériaux, P.O. Box 1020, Varennes, Québec J3X 1S2, Canada

Note: [] E-mail: chaker@inrs-ener.uquebec.ca

Abstract: A transmission grating spectrometer has been coupled to a high-temporal-resolution soft x-ray streak camera for the study of picosecond laser-plasma x-ray sources. A procedure to deconvolve the overlapping contributions of diffraction orders and to calibrate the instrument has been established in order to obtain absolute time-resolved x-ray emission spectra in the 0.1–1.2 keV spectral region. The deconvolution and calibration techniques are presented along with measurements establishing the temporal resolution of this diagnostic at ~2 ps. Examples of calibrated spectra of laser-plasma x-ray sources created by 400 fs laser pulses at intensities of 1018 W/cm2 are also shown.

DOI: 10.3233/XST-1996-6404

Journal: Journal of X-Ray Science and Technology, vol. 6, no. 4, pp. 359-374, 1996