You need JavaScript to view this

Diffusion in glass

Abstract

Rutherford backscattering spectromertry technique (RBS) was used to characterize and investigate the depth distribution profiles of Ca-impurities of Ca-doped soda-time glass. The purposely added Ca-impurities were introduced inti the glass matrix by a normal ion exchange diffusion process. The measurements and analysis were performed using 2 MeV {sup 2}He{sup +} ions supplied from the University of Jordan Van de Graff acceierator (JOVAG). The normalized concetration versus depth profile distributions for the Ca-imourities were determined, both theoretically and experimentally. The theoretical treatment was carried out by setting up and soiving the diffusion equation under the conditions of the experiment. The resulting profiles are characterized by a compiementary error function. the theoretical treeatment was extended to include the various methods of enhancing the diffusion process, e.g. using an electric field. The diffusion coefficient, assumed constant, of the Ca-impurities exchanged in the soda-lime glass was determined to be 1.23 x 10{sup 13} cm{sup 2}/s. A comparison between theoretically and experimentally determined profiles is made and commented at, where several conclusions are drawn and suggestions for future work are mentioned. (author). 38 refs., 21 figs., 10 Tabs.
Authors:
Publication Date:
Dec 31, 1990
Product Type:
Thesis/Dissertation
Report Number:
INIS-JO-003
Reference Number:
SCA: 665100; PA: AIX-28:054355; EDB-97:103611; NTS-98:001066; SN: 97001824884
Resource Relation:
Other Information: TH: Thesis (M.Sc.D).; PBD: 1990
Subject:
66 PHYSICS; BEAM-BEAM INTERACTIONS; DIFFUSION; GLASS; ACCELERATORS; ELECTRIC FIELDS; GASEOUS DIFFUSION PROCESS; ION-MOLECULE COLLISIONS; MEV RANGE 01-10; NEUTRON DIFFUSION EQUATION; SPECTROSCOPY; VAN DE GRAAFF ACCELERATORS
OSTI ID:
500481
Research Organizations:
University of Jordan, Amman (Jordan)
Country of Origin:
Jordan
Language:
English
Other Identifying Numbers:
Other: ON: DE97637164; TRN: JO9700003054355
Availability:
INIS; OSTI as DE97637164
Submitting Site:
INIS
Size:
102 p.
Announcement Date:

Citation Formats

Mubarak, A S. Diffusion in glass. Jordan: N. p., 1990. Web.
Mubarak, A S. Diffusion in glass. Jordan.
Mubarak, A S. 1990. "Diffusion in glass." Jordan.
@misc{etde_500481,
title = {Diffusion in glass}
author = {Mubarak, A S}
abstractNote = {Rutherford backscattering spectromertry technique (RBS) was used to characterize and investigate the depth distribution profiles of Ca-impurities of Ca-doped soda-time glass. The purposely added Ca-impurities were introduced inti the glass matrix by a normal ion exchange diffusion process. The measurements and analysis were performed using 2 MeV {sup 2}He{sup +} ions supplied from the University of Jordan Van de Graff acceierator (JOVAG). The normalized concetration versus depth profile distributions for the Ca-imourities were determined, both theoretically and experimentally. The theoretical treatment was carried out by setting up and soiving the diffusion equation under the conditions of the experiment. The resulting profiles are characterized by a compiementary error function. the theoretical treeatment was extended to include the various methods of enhancing the diffusion process, e.g. using an electric field. The diffusion coefficient, assumed constant, of the Ca-impurities exchanged in the soda-lime glass was determined to be 1.23 x 10{sup 13} cm{sup 2}/s. A comparison between theoretically and experimentally determined profiles is made and commented at, where several conclusions are drawn and suggestions for future work are mentioned. (author). 38 refs., 21 figs., 10 Tabs.}
place = {Jordan}
year = {1990}
month = {Dec}
}