US1954046A - X-ray tube - Google Patents

X-ray tube Download PDF

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Publication number
US1954046A
US1954046A US538823A US53882331A US1954046A US 1954046 A US1954046 A US 1954046A US 538823 A US538823 A US 538823A US 53882331 A US53882331 A US 53882331A US 1954046 A US1954046 A US 1954046A
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US
United States
Prior art keywords
rays
hollow
cathode
ray tube
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US538823A
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English (en)
Inventor
Halberstadt Heinrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHF Mueller AG
Original Assignee
CHF Mueller AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHF Mueller AG filed Critical CHF Mueller AG
Application granted granted Critical
Publication of US1954046A publication Critical patent/US1954046A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes

Definitions

  • the present invention relates to an electron discharge tube for producing X-rays, which is so constructed that the disadvantages noted above are obviated.
  • this invention instead or” utilizing the heat radiation of a separate heater, the thermal energy produced by the incandescent cathode in the X-ray tube itself is made available.
  • the thermal energy produced by the incandescent cathode in the X-ray tube itself is made available.
  • the thermal energy is concentrated by means of a hollow mirror or reflector arranged around the radiation window and is reflected in the desired manner on to the diseased part or" the body to be treated.
  • the hollow rem flector is made of a metal having a satisfactory reflecting capacity for long-wave thermal radiation.
  • the thermal energy is concentrated outside the tube on the hollow reiiector.
  • this hollow reilector has a satisfactory reflective capacity for heat rays, it cannot become heated strongly so that the radiation window remains substantially unaffected.
  • Fig. 1 of the drawing is shown a discharge tube for producing soft X-rays of a known construction and including a grounded anode and a reflector.
  • Fig. 2 illustrates a modication comprising an adjustable reector.
  • a tube 1 has her- 60 metically sealed to it the backbone of an anode 2, the inner conical surface 2a of which constitutes the target surface for the impinging cathode rays from an incandescent cathode 3.
  • f Long-wave Y-rays pass from this point through d a radiation window 4 made, for example, of Lindemannglass.
  • the anode has iixed around it a hollow reflector 5 which serves to concentrate the heat rays emitted by the incandescent cathode and reflects them on to the desired part of the 7U body of the person to be treated. This has the additional advantage over a separate heater, that the radiation window is not exposed to detrimental or destructive heating.
  • the area upon which the heat rays from the cathode are concentrated may be varied by employing a reflector 5 having ad.- justable portions 6 hinged as indicated at 'I whereby the reflected rays may be concentrated to a greater or less extent as desired depending upon the positions of said adjustable portions 6 of the reflector.
  • An evacuated container consisting of an insulating portion and a hollow metal member sealed thereto, said member serving as an X-ray ⁇ enfiitting-electrode, a heat-radiating incandescent cathode within said member, a vacuum-tight window closing said metal member at the side opposite to said insulating wall portion, through which window pass heat rays produced by said cathode and a beam of X-rays emitted by a portion of the inner surface of said hollow member located adjacent to said cathode, a hollow reiiector secured to said metal member and in line herewith, said reflector receiving and reiiecting the heat rays emitted by said cathode so as to concentrate these rays at a point situated in said beam of X-rays.
  • a discharge tube for producing X-rays having an enclosing envelope, part of which consists of metal and serves as an anode and a heatra diating incandescent cathode mounted in said envelope, the wall of the tube being provided with4 V a window for transmitting the desired beam of X-rays and the heat rays emitted by the cathode, a tub-shaped hollow reflector arranged in front of the window outside of said envelope in coaxial relation. with the beam of X-rays, said reflector serving to direct the heat rays produced by the il@ incandescent cathode through the opening of the reector opposite to said Window.
  • a discharge tube for producing X-rays having an enclosing envelope, part of which consists 5 of metal and serves as an anode and a heat-radiating incandescent cathode mounted in said envelope, the Wall of said envelope having a Windovv through which pass the Xerays emitted by said anode and also the heat rays produced byV i0 said cathode, and a hollow reector secured to the tube for reflecting the heat rays, the said reiector being adjustable to Vary the radius of its curva-A ture.
  • a discharge tube for producing X-rays hav- HEINRICH HALBERSTADT.

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  • Radiation-Therapy Devices (AREA)
  • X-Ray Techniques (AREA)
US538823A 1930-05-23 1931-05-20 X-ray tube Expired - Lifetime US1954046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE529987T 1930-05-23

Publications (1)

Publication Number Publication Date
US1954046A true US1954046A (en) 1934-04-10

Family

ID=34109824

Family Applications (1)

Application Number Title Priority Date Filing Date
US538823A Expired - Lifetime US1954046A (en) 1930-05-23 1931-05-20 X-ray tube

Country Status (4)

Country Link
US (1) US1954046A (enrdf_load_html_response)
DE (1) DE529987C (enrdf_load_html_response)
FR (1) FR716383A (enrdf_load_html_response)
GB (1) GB361260A (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472745A (en) * 1946-09-19 1949-06-07 Dow Chemical Co Apparatus for producing a convergent x-ray beam
US2482275A (en) * 1945-11-26 1949-09-20 Machlett Lab Inc Electrical discharge device
US3335518A (en) * 1963-08-19 1967-08-15 Northern Gas Products Company Crop growth improvement by means of propane actuated thermopile and insecticide volatilizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482275A (en) * 1945-11-26 1949-09-20 Machlett Lab Inc Electrical discharge device
US2472745A (en) * 1946-09-19 1949-06-07 Dow Chemical Co Apparatus for producing a convergent x-ray beam
US3335518A (en) * 1963-08-19 1967-08-15 Northern Gas Products Company Crop growth improvement by means of propane actuated thermopile and insecticide volatilizer

Also Published As

Publication number Publication date
GB361260A (enrdf_load_html_response) 1931-11-19
DE529987C (de) 1931-07-20
FR716383A (fr) 1931-12-19

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