scholarly journals Electrical characteristics analysis of a 314 mm2 double-sided spiral SDD for x-ray pulsar navigation

2020 ◽  
Vol 7 (8) ◽  
pp. 085903
Author(s):  
Xinwang Zhang ◽  
Zheng Li ◽  
Manwen Liu ◽  
Hengheng Mu
2016 ◽  
Author(s):  
Heng Shi ◽  
Kai Xiong ◽  
Chunling Wei ◽  
Lei Wang ◽  
Zhiwu Mei

2021 ◽  
Author(s):  
Valentin Ion ◽  
Horia Andrei ◽  
Emil Diaconu ◽  
Mihaita Nicolae Ardeleanu ◽  
Andrei Cosmin Gheorghe

2021 ◽  
Vol 19 (11) ◽  
pp. 108-115
Author(s):  
Nihad Ali Shafeek

This research contains preparing the superconducting compound Bi2-xAgxSr2Ca2Cu3O10+δ and studying its structural and electrical characteristics. The samples were prepared using the solid-state method in two stages, and different concentrations of x were (x= 0.2,0.4,0.6,0.8) replaced instead of bismuth Bi. Then, using a hydraulic press 9 ton/cm2 and sintering with a temperature of 850°C, the samples were pressed. Next, x-ray diffraction is used to study the structural properties. The study of these samples was presented in different proportions of x values, where x = 0.4 is the best compensation ratio of x. A critical temperature of 1400C and the Tetragonal structure was got. After that, the effect of laser nidinium _ yak (Nd: YAG laser) was used on the compositional. It was found that the temperature value increased, so we got the best critical temperature, which is 142 0C.


2021 ◽  
pp. 2150287
Author(s):  
Wei Li ◽  
Ning-Juan Ruan ◽  
Xun Liu ◽  
Feng Yan

In this paper, a nonlinear least squares estimator based on the extending cost function is derived, and its performance is analyzed in a Monte-Carlo simulation. Numerical results show that estimation error of the pulse time of arrival satisfies the normal distribution, the relation between the variance and the number of X-ray photon obtained by our simulation is compared with the analytical model. In addition, the effect of time bin size on the statically behavior of estimation error is also studied. This work holds great promise for designing the parameters of X-ray camera adopted in the pulsar navigation system.


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