نتایج جستجو برای: laser fusion

تعداد نتایج: 298984  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...

Asadi, S., Khalil Allafi, J., Saeid, T., Valanezhad, A.,

In this research, dissimilar welding of NiTi shape memory alloy to AISI 304 austenitic stainless steel Archwires was investigated. For this purpose, common straight orthodontic archwire with rectangular cross-section and dimensions of (0.635 × 0.432 mm) were selected and the laser welding technique was used to connect the wires. The microstructure, chemical composition and phasesin the weld zon...

Asadi, S., Khalil Allafi, J., Saeid, T., Valanezhad, A.,

In this research, dissimilar welding of NiTi shape memory alloy to AISI 304 austenitic stainless steel Archwires was investigated. For this purpose, common straight orthodontic archwire with rectangular cross-section and dimensions of (0.635 × 0.432 mm) were selected and the laser welding technique was used to connect the wires. The microstructure, chemical composition and phasesin the weld zon...

Journal: :Europhysics News 1986

Journal: :The Review of Laser Engineering 1986

Journal: :Europhysics News 1975

Journal: :The Review of Laser Engineering 1974

Journal: :The Review of Laser Engineering 1991

2010
S. P. Obenschain J. D. Sethian A. J. Schmitt

The Fusion Test Facility (FTF) is a high repetition rate ignition facility that would bridge the gap between single shot facilities (such as NIF and LMJ) and a fully functioning laser fusion power plant. It would allow development of science and technologies so that follow-on power plants could have predictable performance. The FTF would need to have enough fusion power, about 100 MW, to rigoro...

1999

LLE Review, Volume 79 149 In the direct-drive approach to inertial confinement fusion (ICF), capsules are irradiated directly by a large number of symmetrically arranged laser beams.1,2 Nonuniformities in the laser irradiation may seed the Rayleigh–Taylor hydrodynamic instability, which degrades target performance;3 therefore, a combination of beam-smoothing techniques is employed to achieve th...

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