Thanks... Most spectroscopic applications with fiber-optics have been restricted to wavelength ranges above 230 nm, because standard silica fibers with an undoped core and fluorine doped cladding are frequently damaged by exposure to deep-UV light (below 230 nm). This solarization effect is induced by the formation of “color centers” with an absorbance band of 214 nm. These color centers are formed when impurities (like Cl) exist in the core fiber material and form unbound electron pairs on the Si atom, which are affected by the deep-UV radiation.
Not long ago, solarization resistant fibers, which were hydrogen loaded, were developed (UVI). The disadvantage of these fibers is the limitation on smaller fiber diameters and limited lifetime, caused by the H2 outgassing from the fiber. Recently, with the availability of a modified core preform, a new fiber became available (UVM). This fiber provides long-term stability at 30-40% transmission (for 215 nm). All UV/VIS fiber-optic probes, cables and bundles with core diameters of 100 µm, 200 µm, 400 µm, 600 µm, 800 µm and 1000 µm can be delivered with solarization resistant fibers. All assemblies, made by Avantes, are pre-solarized for an 8-hrs period, to have a constant transmission of 30-40% @ 215 nm. On Fri, Aug 1, 2014 at 9:37 PM, <mix...@bigpond.com> wrote: > In reply to Axil Axil's message of Sat, 19 Jul 2014 15:31:57 -0400: > Hi, > [snip] > >How Rossi might better control his reactor. > > > >Rossi’s 1 Megawatt reactor contains 100 cells of 10 kilowatts each. If > >Rossi were to interconnect them all together with fiber optic cable so > that > >they could all share the Extreme Ultraviolet light (XUV) emissions of the > >Surface Plasmon Polaritons (SPP) from each of those 100 cells then he > could > >entangle all the nano solitons in all those individual cells into one > >global Bose Einstein condensate across all 100 cells. > > Fibre optic cable doesn't transmit XUV, or even UV. If I'm not mistaken, > the > maximum transmittance of most optical fibres is in the infra-red. > > Regards, > > Robin van Spaandonk > > http://rvanspaa.freehostia.com/project.html > >
