Search results

Sort By:

Limit search:

Application of a Pulsed Slow-Positron Beam to Low-Density Polyethylene Film

100%

Hamada E., Oshima N., Katoh K., Suzuki T., Kobayashi H., Kondo K., Kanazawa I., Ito Y.

Acta Physica Polonica A

2001

vol. 99

issue 3-4

373-378

A pulsing system for a slow-positron beam was applied to study the region near the surface of low-density polyethylene film using positron-annihilation lifetime measurement. The lifetime and intensity of ortho-positronium near the surface were measured as a function of the incident positron energy (1.6-9.1 keV). The size of intermolecular spaces in the surface region (~ 1500 nm) was larger than that in the bulk region. This tendency was especially strong in the region around 200 nm below the surface. On the other hand, the intensity of ortho-positronium decreased at lower incident positron energies, which was attributed to a decrease in the density of the spur electrons and/or an increase in the number of reemitted positrons from the surface.

Refine search results

1 Acta Physica Polonica A

1 2001

1 Hamada E.

1 Ito Y.

1 Kanazawa I.

1 Katoh K.

1 Kobayashi H.

1 Kondo K.

1 Oshima N.

1 Suzuki T.

Search results

Application of a Pulsed Slow-Positron Beam to Low-Density Polyethylene Film