Model supporting the use of pressure in the hot slumping of glass substrates for X-ray telescopes

被引：0
|
作者：
Salmaso, Bianca [1 ]
Brizzolari, Claudia [2 ]
Spiga, Daniele [1 ]
机构：
[1] INAF Brera Astron Observ, Via E Bianchi 46, I-23807 Merate, Italy
[2] Univ Insubria, Via Valleggio 11, I-22100 Como, Italy
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 21期
关键词：
Telescopes - Glass substrates - Molds;
D O I：
10.1364/OE.24.024799
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Thin glass foils are nowadays considered good substrates for lightweight focusing optics, especially for X-ray telescopes. The desired shape can be imparted to the foils by hot slumping, a process that replicates the shape of a slumping mould. During thermal slumping, when the glass and the mould come into contact, ripples in the glass surface appear spontaneously if the thermal expansions are mismatched. In our hot slumping setup, pressure is applied to ease the mould shape replication and to enhance the ripple relaxation. Starting from an existing model developed to explain the ripple formation in hot-slumped glass foils without pressure, we have developed a model that includes the pressure to support our experimental results. (C) 2016 Optical Society of America
引用
收藏
页码：24799 / 24804
页数：6
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