Refractive-index changes caused by proton radiation in silicate optical glasses.

  title={Refractive-index changes caused by proton radiation in silicate optical glasses.},
  author={A. Gusarov and D. Doyle and A. Hermanne and F. Berghmans and M. Fruit and G. Ulbrich and M. Blondel},
  journal={Applied optics},
  volume={41 4},
We have studied experimentally, by using a differential interferometric technique, the effect of proton radiation on the refractive index of commercial (Schott) silicate crown glasses, BK7 and LaK9, and their radiation-resistant counterparts. The strongest effect was observed for the radiation-hard lanthanum crown LaK9G15: At a 0.65-Mrad dose the index change was approximately 3 x 10(-5). Radiation-hard glasses are used in optical systems operating in radiation environments because they prevent… Expand
Gamma radiation-induced refractive index change in Ge- and N-doped silica
We measured the change of the refractive index over a wide wavelength range in Ge- and N-doped high purity (fiber optics grade) silica glasses subjected to gamma irradiation. The radiation-inducedExpand
Optical components (lens, mirrors, filters, prisms, etc.) can be exposed to energetic photons such are gamma-rays when used in either outer space or nuclear applications. The study of the behavior isExpand
High Precision Refractive Index Measurement Techniques Applied to the Analysis of Neutron Damage and Effects in CaF2 Crystals
Neutron irradiation damages material by atomic displacements. The majority of these damage regions are microscopic and difficult to study, though they can cause a change in density and thus a changeExpand
Characterization of light transmissions in various optical fibers with proton beam
As a feasibility study on the development of a fiber-optic radiation sensor for proton therapy dosimetry, we characterized light transmissions of various commercial optical fibers such as silica andExpand
Novel techniques for high precision refractive index measurements, and application to assessing neutron damage and dose in crystals
Abstract In this work we present novel techniques for high precision index of refraction measurements for transparent crystals, and demonstrate a change from neutron irradiation. Radiation damageExpand
Neutron irradiation of flint glasses for optics in ITER
Abstract Radiation-resistant optics, which is necessary to transfer light from plasma to detectors in ITER, will be exposed to neutron fluxes at D-T stage. Achromatic lenses located in the interspaceExpand
Effect of melting atmospheres on the optical property of radiation-hard fluorophosphate glass
Abstract High-energy radiation in space and nuclear irradiation environment induces colour centres in optical glass, causing solarisation, and a serious condition can render optical systems andExpand
Rad-hard properties of the optical glass adopted for the PLATO space telescope refractive components.
A model to simulate the throughput of the whole instrument has been developed and used to verify the instrument performance considering different stellar spectra, and describes the transmission loss as a function of the thickness in dependence of the impinging dose. Expand
Application of the microinterferometric tomography setup to the reliability tests of the fiber sensors exposed to cumulated gamma radiation
In this paper we report on the measurement of the refractive index profile of optical fibers exposed to the gamma radiation. The tool we used for determining the refractive index distribution isExpand
Potential performance loss and compensation techniques of a lens under ionizing radiations
Our goal is to design a radiation resistant camera lens for color imaging capable to withstand ionizing radiations up to total doses of a few MGy. The latter cause damages in the internal structureExpand


Index and density changes induced by proton radiation in lanthanum crown glass
We studied the refractive index and density changes in cerium-doped lanthanum crown glass irradiated in air with 38.5 MeV protons. At a low proton fluence, the index change is linear with dose, andExpand
Proton-induced radiation effects on optical glasses
Proton induced absorption over the 350 nm to 2500 nm spectral region and the growth of that absorption with increasing dosage was determined for four glasses (Schott glasses FK3, SF57, IRG7, andExpand
Gamma radiation effects on some optical glasses
A study of the effects of Co60 gamma radiation on the transmission and index of refraction of several optical glass types is presented. The glasses have indices (nd) in the range of 1.486 to 1.581.Expand
Radiation-induced wave-front aberrations: a new approach.
It is indicated that radiation-induced wave-front aberrations cannot necessarily be neglected for space optical systems that use radiation-hardened glasses and the phenomenological approach based on the concept of dose coefficients is used. Expand
Radiation induced color centers in multicomponent glasses
Abstract This paper discusses, in some detail, the nature of color centers induced by radiation in different borate, silicate and phosphate glasses; using optical and ESR techniques. The role ofExpand
Paramagnetic centers in glasses induced by low earth orbit space radiation
Abstract After having been exposed to space radiation on the experimental platform Eureca (European Retrievable Carrier) for almost eleven months, different optical glasses were examined to determineExpand
Interspecimen Comparison of the Refractive Index of Fused Silica
The index of refraction of optical quality fused silica (SiO2) was determined for 60 wavelengths from 0.21 to 3.71 μ at 20°C. The dispersion equationExpand
Color Centers in a Cerium‐Containing Silicate Glass
X‐ray irradiation of glass with the weight percent composition 75% SiO2, 25% Na2O produces color centers which absorb visible light. Cerium in the glass prevents the formation of these centers. TheExpand
Fabrication of long-period optical fiber gratings by use of ion implantation.
The fabrication of long-period optical fiber gratings by use of a refractive-index increase induced by ion implantation is reported, obtaining a wavelength-dependent effective transmission loss byuse of the grating. Expand
Absorption of iron and water in the Na2O-CaO-MgO-SiO2 glasses. II. Selection of intrinsic, ferric, and ferrous spectra in the visible and UV regions
Abstract Absorption spectra of a number of 13Na 2 O–10CaO–6MgO–71SiO 2 glass samples doped with iron were studied in the spectral range 3000–200 nm (3300–50 000 cm −1 ). The concentration of Fe 2 O 3Expand