Method and a device for localizing a light impact on the photoca

Details Method and a device for localizing a light impact on the photoca Method and a device for localizing a light impact on the photoca

1974-01-17

1976-03-02

Stolwein, Walter

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250203CT, 250549, 313103R, H01J 3912

Patent

active

039419975

ABSTRACT:
A light impact on the photocathode of a photomultiplier is localized by defocusing the beam of emitted photoelectrons, sweeping the surface of the photocathode by means of a localized electric field which is located in the vicinity of the photocathode and by measuring the time which elapses between the instant of commencement of sweeping of the photocathode surface and at least one change of sign of the anode signal.

REFERENCES:
patent: 2892949 (1959-06-01), Hardy
patent: 3281601 (1966-10-01), Sheftelman
patent: 3614240 (1971-10-01), Brandtj et al.

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