Ramani, R. and Ramachandra, P. and Ramgopal, G. and Ravichandran, T. S. G. and Ranganathaiah, C. and Shubha Gopal (1996) Correlation between electron density and momentum in free volume holes of some semicrystalline polymers. Physica Status Solidi A-Applied Research, 158 (1). pp. 3-8.
Full text not available from this repository. (Request a copy)Abstract
Positron annihilation lifetime (PAL) and Doppler broadening (DB) measurements were carried out in four semicrystalline polymer samples, viz., polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), polytetrafluoroethylene (PTFE), and Nylon 6; 6 (PA). A correlation between the S and W-parameters which reflect the electron momentum, and the ortho-positronium (o-Ps) lifetime reflecting the electron densities in free volume sites is observed. Interestingly, the present results support the known intuition that o-Ps has a higher momentum component compared to p-Ps and free annihilations but different from that observed by Davies and Pethrick.
| Item Type: | Article |
|---|---|
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | Users 23 not found. |
| Date Deposited: | 24 May 2021 05:52 |
| Last Modified: | 27 Jun 2022 10:34 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/16544 |
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