Method and device for determining the distribution of .beta.rays

Details Method and device for determining the distribution of .beta.rays Method and device for determining the distribution of .beta.rays

1990-04-25

1991-06-18

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

2503851, G01T 1185

Patent

active

050251627

ABSTRACT:
A method and device are disclosed for determining the distribution of the .beta. rays emerging from a surface. The device comprises an enclosure (3) filled with a gas mixture having a first preamplification chamber (6) between two grids (9 and 10), a second transfer chamber (7) between two grids (10 and (11) and a third multiplication chamber (8) between two grids (11 and 12); as well as three DC voltage sources (13, 14 15); and an impeding assembly (22, 23, 17, 18, 19, 20 and 21).

REFERENCES:
patent: 3717766 (1973-02-01), Allard et al.
patent: 4316089 (1982-02-01), Aoyama
G. Peterson, G. Charpak, G. Melchart and F. Sauli, "The Multistep Avalanche Chamber as a Detector in Radiochromatography Imaging", Nuclear Instruments and Methods, 176 (1980), pp. 239-244.
G. Charpak, W. Dominik, J. P. Fabre, J. Gauden, V. Peskov, F. Sauli and M. Suzuki, "Some Applications of the Imaging Proportional Chamber," IEEE Transactions on Nuclear Science, vol. 35, No. 1 (Feb. 1988), pp. 483-486.

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