Search results

Sort By:

Limit search:

Superconducting Lead Granular Layer Prepared by Reducing in Hydrogen Lead of Germanate Glasses

100%

Gackowska J., Gazda M., Trzebiatowski K., Kusz B.

Acta Physica Polonica A

2006

vol. 109

issue 4-5

591-596

The thin layer of Pb granules on the surface of the lead-germanate glass was prepared by thermal annealing in hydrogen. The structure and superconducting properties of lead layer depend on temperature and time of reduction. The influence of time and temperature of reduction on the properties of the reduced layer thickness has been studied.

Surfaces of Electron-Emitting Glasses Studied by a Slow Positron Beam

64%

Pliszka D., Gazda M., Kusz B., Trzebiatowski K., Karwasz G., Deng W., Brusa R., Zecca A.

Acta Physica Polonica A

2001

vol. 99

issue 3-4

465-472

Semi-conducting glasses used for electron multipliers and microchannel plate devices are obtained by surface modification of Pb or Bi-reach silicon-based glasses. The reduced layer extends down to 200-500 nm, much more than the effective depth of the electron-emitting layer. By the use of slow-positron beam we monitor the structural changes undergoing in near-to-surface layers after isothermal annealing. The measurements suggest a possible correlation between secondary-electron emission coefficient and the Doppler-broadening S-parameter. On these samples there were also performed atomic force microscopy, secondary electron emission, differential scanning calorimetry, and electric conductivity measurements.

Refine search results

2 Acta Physica Polonica A

1 2006

1 2001

2 Gazda M.

2 Kusz B.

2 Trzebiatowski K.

1 Brusa R.

1 Deng W.

1 Gackowska J.

1 Karwasz G.

1 Pliszka D.

1 Zecca A.

Search results

Superconducting Lead Granular Layer Prepared by Reducing in Hydrogen Lead of Germanate Glasses

Surfaces of Electron-Emitting Glasses Studied by a Slow Positron Beam