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US3609435A Expired / Lapsed US ⏱️ 0.0 years remaining

Fast-response ionization chamber for detecting ionizing radiation from 0.1 to 60 angstroms

Assignee: RANDOLPH G TAYLOR
•
Filing: 1968-10-30
•
Granted: 1971-09-28
•
Expires: 1988-10-30
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Abstract

Abstract This invention is directed to an ionization chamber having a rectangular housing including therein spaced anode plates with a centrally located cathode. This ionization chamber has a fast response for detection of ionizing radiation in various bands from 0.1 to 60A depending on the gas filling and window material (for example 0.5-3.0A uses a 50-mil-thick beryllium window and 2 atm, of krypton) with a fast recovery. Fast response is brought about by the relationship of the cathode to the anodes in which the spacing and electric field is uniform along the length of and on opposite sides of the cathode. The chamber is filled with a gaseous filling selected from one of the following, nitrogen, carbon tetrachloride, xenon, nitrogen, krypton or argon and is provided with a removable beryllium, Mylar or aluminum window through which the ionizing radiation enters the chamber.

Inventors

  • 👤 Randolph G Taylor
  • 👤 John Lewis Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:21
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/02

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 35 words
An ionization chamber as claimed in claim 1, wherein said electrodes are thin plates extending along the length of said housing and having a height substantially the height of the inside height of said housing.
Claim 2
Dependent Claim 62 words
An ionization chamber as claimed in claim 1; wherein, said gas filling is krypton at a pressure of about 1,520 millimeters of mercury at 0* centigrade in an evacuated environment of about 10 5 millimeters and said window is beryllium having a thickness of about 50 mils, whereby the radiation detected has a range between about 0.50 to about 3.0 angstrom units.
Claim 3
Dependent Claim 60 words
An ionization chamber as claimed in claim 1; wherein, said gas filling is argon at a pressure of 760 millimeters of mercury at 0* centigrade in an evacuated environment, said window is a thin sheet of beryllium having a thickness of about 5 mils, whereby the radiation detected is in a range between about 2.0 and about 8.0 angstrom units.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-27 1975-03-29 1975-09-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-27 1979-03-29 1979-09-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-27 1983-03-29 1983-09-28 $7700.00 Window Closed / Lapsed

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