Fluid analysis of positrons in soft matter
Boyle, G.J., White, R.D., and Robson, R.E. (2011) Fluid analysis of positrons in soft matter. Journal of Physics: conference series, 262. 012008. pp. 1-5.
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Abstract
Improvements to Positron Emission Tomography (PET) technology depend to a large extent on obtaining a better understanding of positron transport processes in soft condensed matter. The most economically computational, physically tenable method of carrying out such an investigation is the fluid approach, in which the Boltzmann kinetic equation is replaced by a hierarchy of low order, velocity moment equations, in which collision terms are approximated by extending 'momentum transfer theory' to allow for coherent scattering arising from the structure of the medium. We show how these fluid equations furnish structure-modifed versions of well known semi-empirical relations linking transport coefficients, and give numerical calculations for simple models.
| Item ID: | 16441 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 1742-6596 |
| Additional Information: | 12th International Workshop on Slow Positron Beam Techniques (SLOPOS12) |
| Date Deposited: | 09 Jun 2011 06:10 |
| FoR Codes: | 02 PHYSICAL SCIENCES > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020201 Atomic and Molecular Physics @ 50% 02 PHYSICAL SCIENCES > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020204 Plasma Physics; Fusion Plasmas; Electrical Discharges @ 50% |
| SEO Codes: | 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100% |
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