title: A new method to calibrate the absolute sensitivity of a soft X-ray streak camera.
abstract: In this paper, we introduce a new method to calibrate the absolute sensitivity of a soft X-ray streak camera (SXRSC). The calibrations are done in the static mode by using a small laser-produced X-ray source. A calibrated X-ray CCD is used as a secondary standard detector to monitor the X-ray source intensity. In addition, two sets of holographic flat-field grating spectrometers are chosen as the spectral discrimination systems of the SXRSC and the X-ray CCD. The absolute sensitivity of the SXRSC is obtained by comparing the signal counts of the SXRSC to the output counts of the X-ray CCD. Results show that the calibrated spectrum covers the range from 200 eV to 1040 eV. The change of the absolute sensitivity in the vicinity of the K-edge of the carbon can also be clearly seen. The experimental values agree with the calculated values to within 29% error. Compared with previous calibration methods, the proposed method has several advantages: a wide spectral range, high accuracy, and simple data processing. Our calibration results can be used to make quantitative X-ray flux measurements in laser fusion research.
authors.affiliation: College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Yu
authors.affiliation: Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
authors.forename: Shenye
authors.initials: S
authors.lastname: Liu
authors.affiliation: Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Li
authors.affiliation: Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
authors.forename: Zhiwen
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Chen
authors.affiliation: Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
authors.forename: Luting
authors.initials: L
authors.lastname: Guo
authors.affiliation: Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
authors.forename: Li
authors.initials: L
authors.lastname: Yao
authors.affiliation: College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Shali
authors.initials: S
authors.lastname: Xiao