Microchannel plate
AssigneeHamamatsu Photonics K.K.
InventorsToshiyuki Uchiyama, Yusuke Hayase, Katsuyuki Ishiguro
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Abstract
The present invention relates to a low-resistance MCP with an expanded dynamic range and excellent environment resistance, in comparison with the conventional technology. The MCP has a double structure composed of hollow first cladding glasses whose inner wall surfaces function as channel walls, and a second cladding glass having an acid resistance lower than that of the first cladding glasses.
Claims19
A microchannel plate comprising a main body comprised of lead glass which exhibits electric insulation before a reduction treatment and exhibits electric conduction after the reduction treatment,
- wherein the main body comprises:
- a front surface;
- a back surface opposing the front surface;
- channel walls each of which emits secondary electrons and continuously extends along a predetermined direction from the front surface to the back surface, the each continuous channel wall having one end located at the front surface and the other end located at the back surface;
- first cladding glasses each of which has a hollow structure extending along the predetermined direction and has an inner wall functioning as the each continuous channel wall, the each first cladding glass having one end located at the front surface and the other end located at the back surface;
- and
- a second cladding glass which has through holes each extending along the predetermined direction and accommodating an associated one among the first cladding glasses, the each through hole having one end located at the front surface and the other end located at the back surface while an entire inner wall of the each through hole is completely covered by and in direct contact with the associated first cladding glass, and
- wherein in comparison before the reduction treatment, the first cladding glasses have an acid resistance higher than an acid resistance of the second cladding glass, so that after the reduction treatment a low-resistance microchannel plate is produced with an expanded dynamic range and excellent environment resistance.
A microchannel plate comprising a main body comprised of lead glass which exhibits electric insulation before a reduction treatment and exhibits electric conduction after the reduction treatment,
- wherein the main body comprises:
- a front surface;
- a back surface opposing the front surface;
- channel walls each of which emits secondary electrons and continuously extends along a predetermined direction from the front surface to the back surface, the each continuous channel wall having one end located at the front surface and the other end located at the back surface;
- a cladding glass which has through holes extending along the predetermined direction and which contains lead oxide at a weight percentage of not less than 48.0% and less than 65% before the reduction treatment, the each through hole having one end located at the front surface and the other end located at the back surface;
- and
- coating materials each of which has an inner wall functioning as the each continuous channel wall and is accommodated in an associated one among the through holes in the cladding glass while completely covering an entire inner wall of the associated through hole, the each coating material having one end located at the front surface and the other end located at the back surface,
- wherein the coating materials have an acid resistance before the reduction treatment higher than an acid resistance of the cladding glass before the reduction treatment, so that after the reduction treatment a low-resistance microchannel plate is produced with an expanded dynamic range and excellent environment resistance.
Dependencies are inferred from the claim text.