X-ray-radiation-recording streak-camera-based technique used in experimental studies of laser fusion instabilities at ISKRA-4 laser facility

1999 ◽  
Author(s):  
Alexei V. Senik ◽  
Sergey G. Garanin ◽  
Valeri P. Lazarchuk ◽  
Vasili M. Murugov ◽  
Sergei I. Petrov
Keyword(s):  
Streak Camera ◽  
Experimental Studies ◽  
Laser Fusion ◽  
X Ray ◽  
Laser Facility

Photocathode detection system of X-ray streak camera for laser fusion

2018 ◽  
Vol 47 (8) ◽  
pp. 817002
Author(s):  
顾 礼 Gu Li ◽  
宗方轲 Zong Fangke ◽  
李 翔 Li Xiang ◽  
周军兰 Zhou Junlan ◽  
杨勤劳 Yang Qinlao ◽  
...  
Keyword(s):  
Streak Camera ◽  
Detection System ◽  
Laser Fusion ◽  
X Ray

scholarly journals Development of X-ray streak camera electronics at AWRE

1986 ◽  
Vol 4 (1) ◽  
pp. 145-156 ◽  
Author(s):  
M. C. Jackson ◽  
R. D. Long ◽  
D. Lee ◽  
N. J. Freeman
Keyword(s):  
Streak Camera ◽  
Sweep Rate ◽  
Bragg Diffraction ◽  
X Rays ◽  
Crystal Spectrometer ◽  
One Dimensional ◽  
X Ray ◽  
Ramp Generator ◽  
Laser Facility ◽  
User Facility

The paper reviews a number of X-ray streak cameras developed at AWRE. These cameras are used to provide temporal and one-dimensional spatial or spectral information on X-rays emitted from laser produced plasmas. Two of these cameras have been designed to be combined with other diagnostic instrumentation; one with a Wolter X-ray microscope (×22 magnification) and the other with a Bragg diffraction crystal spectrometer. This latter instrument provides a few eV spectral resolution and ∼15 ps temporal resolution; a typical experimental application at the AWRE HELEN laser facility will be described. The paper describes the circuitry of the bipolar avalanche transistor ramp generator used to drive the streak plates of the cameras. Improvements to this include: (a) increasing the fastest streak rate to ∼10 ps mm−1 by a distributed capacitance network across each of the bipolar stacks of transistors, and (b) reducing the trigger jitter to approximately ±10 ps by the use of a new mix of transistors in the stack and a Raytheon RS 3500 avalanche transistor. Additional improvements have now been added. These include a ‘half-scan’ user facility to aid initial camera timing and direct switching to select the sweep rate of the camera.

Femtosecond x-ray streak camera based on photoelectron filter technology for laser fusion

2019 ◽  
Vol 58 (17) ◽  
pp. 4714
Author(s):  
Li Gu ◽  
Houzhi Cai ◽  
Fangke Zong ◽  
Xiang Li ◽  
Junlan Zhou ◽  
...  
Keyword(s):  
Streak Camera ◽  
Laser Fusion ◽  
X Ray

scholarly journals Hard x-ray transmission curved crystal spectrometers (10–100 keV) for laser fusion experiments at the ShenGuang-III laser facility

2016 ◽  
Vol 4 ◽  
Author(s):  
Ming-hai Yu ◽  
Guang-yue Hu ◽  
Ning An ◽  
Feng Qian ◽  
Yu-chi Wu ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Optical Design ◽  
Experimental Results ◽  
Laser Fusion ◽  
Recording Medium ◽  
High Quality ◽  
X Ray ◽  
Laser Facility ◽  
Working Distance ◽  
Spectral Ranges

Two transmission curved crystal spectrometers are designed to measure the hard x-ray emission in the laser fusion experiment of Compton radiography of implosion target on ShenGuang-III laser facility in China. Cylindrically curved ${\it\alpha}$ -quartz (10–11) crystals with curvature radii of 150 and 300 mm are used to cover spectral ranges of 10–56 and 17–100 keV, respectively. The distance between the crystal and the x-ray source can be changed over a broad distance from 200 to 1500 mm. The optical design, including the integral reflectivity of the curved crystal, the sensitivity, and the spectral resolution of the spectrometers, is discussed. We also provide mechanic design details and experimental results using a Mo anode x-ray source. High-quality spectra were obtained. We confirmed that the spectral resolution can be improved by increasing the working distance, which is the distance between the recording medium and the Rowland circle.

scholarly journals Absolutely Calibrated Soft X-Ray Streak Camera For Laser Fusion Applications

1983 ◽  
Author(s):  
Robert L. Kauffman ◽  
Gary Stradling ◽  
Hector Medecki
Keyword(s):  
Streak Camera ◽  
Laser Fusion ◽  
X Ray ◽  
Fusion Applications

An absolutely timed x‐ray streak camera for laser fusion experiments

1983 ◽  
Vol 54 (11) ◽  
pp. 6302-6306 ◽  
Author(s):  
S. A. Letzring ◽  
E. I. Thorsos ◽  
W. D. Friedman ◽  
W. Seka ◽  
J. E. Rizzo
Keyword(s):  
Streak Camera ◽  
Laser Fusion ◽  
X Ray ◽  
Fusion Experiments

scholarly journals Spatial and temporal characteristics of X-ray emission from hot plasma driven by a relativistic femtosecond laser pulse

2009 ◽  
Vol 27 (1) ◽  
pp. 19-26 ◽  
Author(s):  
W. Hong ◽  
Y. He ◽  
T. Wen ◽  
H. Du ◽  
J. Teng ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Intensity ◽  
Laser Fusion ◽  
X Rays ◽  
X Ray ◽  
Hot Plasma ◽  
Laser Facility ◽  
Jet Structure ◽  
Spatial And Temporal Characteristics

AbstractWe present the temporal and spatial characterization of X-ray sources (at ~1 keV) driven by a 200 TW, 30 fs, 800 nm laser pulse on SILEX-I laser facility at Research Center of Laser Fusion. For laser copper foil interaction with laser intensity between 6 × 1018 W/cm2and 3 × 1019 W/cm2, the X-ray images show cone-like jet structures. While the yield of X-rays is strongly dependent on the laser intensity, the plasma expansion length is weakly dependent on the laser intensity, and the open angle of the cone-like jet is not correlated to the laser intensity. The formation of the jet structure is attributed to the plasma transverse confine by the self-induced quasi-static magnetic field. An X-ray pedestal 4 ns preceding the main pulse was observed. The correlation between X-ray pedestal and collimated proton beam generation was found.

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