Evolution of the 2-dimensional intensity distribution of the scattered lights from gelling tungstic acid

Kazuhiro Hara, Keiichi Kuboyama, Hirotaka Okabe, Kazumi Matsushige

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A conventional system for light scattering measurements utilizing a laser, a TV camera and a frame memory was constructed in order to investigate the gelation process of tungstic acid. The results revealed marked changes in the 2-dimensional intensity distribution of the scattered lights at about 3600 s and 5000 s after ion exchange in the present experimental conditions ([Na2WO4] =0.76 mol/l, 296 K). By the tilting test, it was confirmed that the first characteristic time corresponded to the gelation time, around which a marked intensity increase at the position corresponding to the laser beam was observed, while at around 5000 s, the increase occurred mainly on the outskirts of the beam, probably because of the progressive densification in the network structure. Moreover, a close correlation between the scattering characteristics and the gelation process is suggested from the numerical data.

Original languageEnglish
Pages (from-to)996-1000
Number of pages5
JournalJapanese Journal of Applied Physics
Volume32
Issue number8 R
DOIs
Publication statusPublished - Jan 1 1993

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gelation
Gelation
luminaires
acids
Acids
densification
Densification
Light scattering
Laser beams
Ion exchange
light scattering
Cameras
cameras
laser beams
Scattering
Data storage equipment
Lasers
scattering
lasers
ions

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Evolution of the 2-dimensional intensity distribution of the scattered lights from gelling tungstic acid. / Hara, Kazuhiro; Kuboyama, Keiichi; Okabe, Hirotaka; Matsushige, Kazumi.

In: Japanese Journal of Applied Physics, Vol. 32, No. 8 R, 01.01.1993, p. 996-1000.

Research output: Contribution to journalArticle

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