Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1989-05-24
1990-05-01
Lee, John D.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250251, 250395, 2504731, 350320, 378 51, 378145, 378204, G02B 620, G01N 2300, G21K 106
Patent
active
049213270
ABSTRACT:
A thin, flexible, hollow fiber capable of transmitting ionizing radiation. Ionizing radiation enters the fiber through entrance pupil (10) and travels through the hollow interior of fiber body (20) by reflecting and scattering off the inner wall of the fiber, frequently at grazing incidence angles. Fiber body (20) is covered at one end by thin film cap (30) which is thin enough to be at least semitransparent to ionizing radiation, but which is also strong enough to allow air to be withdrawn from fiber body (20) at the opposite uncapped end. Small obstructions (32) at the exit end of the fiber can be used to spread the beam of ionizing radiation to a desirable width. A flexible fiber capable of transmitting ionizing radiation has important applications in medicine for the radiation therapy of tumors. Applications also exist in communications and other fields.
REFERENCES:
patent: 4602425 (1986-07-01), Kronenberg
patent: 4652083 (1987-03-01), Laakmann
Watanabe et al., "Soft X-Ray Transmission Characteristics of Hollow-Core Fused-Quartz Fibers", Applied Optics, vol. 24, No. 23, Dec. 1, 1985, pp. 4206-4209.
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