نتایج جستجو برای: collimation
تعداد نتایج: 1626 فیلتر نتایج به سال:
The connection between collimation and acceleration of magnetized relativistic jets is discussed. The focus is on recent numerical simulations which shed light on some longstanding problems.
In contrast to jets from radio galaxies, energy losses due to radiation effects, atomic hydrogen ionisation/recombination and molecular hydrogen dissociation are important in jets from young stars. Moreover there is now general agreement that magnetic fields may play a very important role not only in the formation of these jets but also their subsequent collimation. With these ideas in mind we ...
We present a comprehensive set of axisymmetric, time-dependent simulations of jets from Keplerian disks whose mass loading as a function of disk radius is systematically changed. For a reasonable model for the density structure and injection speed of the underlying accretion disk, mass loading is determined by the radial structure of the disk’s magnetic field structure. We vary this structure b...
PURPOSE There are two collimation systems associated with the CyberKnife system, the fixed cone collimator and the Iris collimator. The Iris collimator is used more frequently because of its superior flexibility. However, sometimes treatments have to be canceled or postponed due to Iris collimator mechanical failures. The purpose of this study is to investigate the feasibility of switching coll...
A device for measuring the power of laser radiation.has been designed. The consists transmitter and receiving part. includes optical radiation source system collimation radiation. receiver part silicon photodiodes, electronic signal processing unit measurements.
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