Structure of Diaplectic Glass

Structure of Diaplectic Glass 3.2.1. Diaplectic Quartz Glass... 

In this chapter, I focus on works concerning the atomic structures of diaplectic glass and shock-wavc-densified glasses in order to understand the for-... 

Deformed quartz samples obtained from shock-recovery experiments were generally investigated with TEM (transmission electron microscopy) to study their planar deformation features. Furthermore, several studies on the atomic-scale structure of diaplectic quartz glass have been carried out by using X-ray diffraction and IR (infrared) and Raman spectroscopy techniques. In the next section, some recent structural investigations of diaplectic quartz glass will be reviewed. 

Figure 3.8. A model structure of diaplectic orthoclase glass. = T atoms 0 = 0 atoms = K atoms...

As with crystalline quartz, feldspar crystals also transform to diaplectic glass when, subjected to shock compression. Studies of diaplectic feldspar glasses liave been carried out by many investigators using many techniques (TEM, X-ray. IR, and Ramiui spectroscopy, and thermal analysis [11,15,19,22,25,28-30.44-47] However, tire number of atomic scale structural studies is limited [25,30,33,45]. In this section, our group s recent results on the structural analysis of some diaplectic feldspar glasses by X-ray and Raman spectroscopy will be presented, with comparison to many previously obtained data. 

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