Bibliographic Details
| Title: |
Optical and ageing studies of aerogel samples for RICH applications in space |
| Authors: |
Martínez-Dávalos, A.1, Belmont-Moreno, E.1, Menchaca-Rocha, A. menchaca@fisica.unam.mx |
| Source: |
Nuclear Instruments & Methods in Physics Research Section A. Nov2005, Vol. 553 Issue 1/2, p177-181. 5p. |
| Subjects: |
Aerogels, Hydrophobic surfaces, Silica, Colloids |
| Abstract: |
Abstract: Optical and ageing properties of hydrophobic silica aerogel have been measured. The optical observations include the determination of the index of refraction of individual aerogel samples, and transmittance measurements. Concerning ageing, we investigate possible explanations for an appreciable decrease on the light yield observed in the aerogel tiles used in the AMS-01 Cherenkov detector, flown on board of the NASA Discovery Shuttle. Measurements were carried out simulating the vacuum and thermal cycle to which the aerogel was subject. These tests indicate that this material is very sensitive to residual contaminants that might be present during the vacuum pumping and/or gas admission process. [Copyright &y& Elsevier] |
|
Copyright of Nuclear Instruments & Methods in Physics Research Section A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Engineering Source |
