Design and Construction of a Bent Crystal Spectrometer for Studying Soft    X-Rays of Sharif Plasma Focus

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Hosseinzadeh, Abdolhadi | 2014

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 45426 (46)
University: Sharif University of Technology
Department: Energy Engineering
Advisor(s): Vosoughi, Naser; Etaati, Gholam Reza
Abstract:
A soft X-ray spectrometer based on Johann's method and an embedded curved crystal is designed and fabricated for Sharif University of Technology's Plasma Focus (SUT-PF) in this project. Focusing rays with the same wavelength at a point to increase the ray intensity is the reason of choosing the cylindrical curved crystal spectrometer since its performance is inspired to the Bragg's law.The optimal conditions for SUT-PF (pressure and voltage) is adjusted and examined by photodiode detector and the camera pinhole before spectroscopy experiments. The diameter of generated hot spots is measured as 80 microns in the optimal condition.The recorded spectral lines on the radiography film and the corresponding atomic transitions are measured and analyzed using a suitable arrangement of the spectrometer and PF device and discharging it in the optimal condition for soft X-ray generation. Experimental results confirm that the wavelength of emitted soft X-ray from ionized Argon plasma is mainly in the range of 3 to 4 angstrom. Atomic transition of 〖1s〗^2-1s2p in the emitted wavelength of 3.943 angstrom has the most intensity amongst the other spectral lines
Keywords:
Plasma Focus ; Spectrometry ; X Rays ; Pinhole Camera ; Curved Crystal

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