US2922060A - X-ray tube of high output - Google Patents

X-ray tube of high output Download PDF

Info

Publication number
US2922060A
US2922060A US536247A US53624755A US2922060A US 2922060 A US2922060 A US 2922060A US 536247 A US536247 A US 536247A US 53624755 A US53624755 A US 53624755A US 2922060 A US2922060 A US 2922060A
Authority
US
United States
Prior art keywords
anode
work space
ray
ray tube
tube
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
US536247A
Inventor
Rajewsky Boris
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2922060A publication Critical patent/US2922060A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details

Definitions

  • This invention relates to an improved type of source for the emanation of Roentgen rays and more particularly to X-ray tubes having a high output.
  • the unutilized share of the emanated X-rays increases with the distance of the objects from the focal spot, it is advantageous to approximate the object as'closely as possible to the focal spot so as to obtain a high output or dosage yield of X-rays in the work space, i.e., the space in which the object to be irradiated is located.
  • a hollow resonator anode tube such as described, for instance, in the patent to Cassen 2,342,789 relating to super voltage X-ray tube.
  • the X-rays are generated on a flat anode membrane which serves simultaneously as the ray-transmissive window of the tube and is usually cooled by a flow of coolant passing between the aforesaid window and a second outer window.
  • a flat anode membrane which serves simultaneously as the ray-transmissive window of the tube and is usually cooled by a flow of coolant passing between the aforesaid window and a second outer window.
  • an X-ray tube which is provided with an anode being a large concave ray transmissive member, which vaulted surface surrounds the work space at least partially, i.e. on several sides thereof. Since the focal spot can thus be extended over a large surface surrounding the work space under optimal conditions, a large proportion of the generated X-rays can be utilized and a high load capacity of the tube can be attained.
  • Another advantage of a concave, vaulted anode for use in a concave anode tube resides in the fact that the anode membrane is only subjected to tensile stress.
  • the cathode surrounding the anode on the side of the latter facing away from the work space. Improved results are further obtained by providing screening means on the outside of the cathode facing away from the anode. A higher load capacity of the anode is obtained by cooling the same in a suitable manner.
  • Figure 2 is a cross-section along line 2-2 in Figure 1;
  • Figure 3 shows another embodiment of an X-ray tube according to the invention
  • Figure 4 is a sectional view along line 4-4 in Figure 3;
  • Figure 5 shows an arrangement wherein two X-ray tubes of the type shown in Figures 3 ,and 4 are combined to form a closed work space;
  • Figure 6 shows yet another embodiment of an X-ray tube according to the invention in longitudinal section.
  • reference numeral 1 indicates the anode which partially surrounds the work space 8.
  • the ray transmissive anode 1 is tube shaped.
  • An inner tube 2, of ray transmissive material, is disposed concentrically with anode 1 so as to provide a cylindrical channel 3 for the passage of a coolant.
  • the coolant prevents excessive heating of the anode 1 under high loads.
  • Inlet and outlet means 11 and 12 admit a coolant to, and remove the same from chamber 3.
  • the tube 2 can be made, for instance, using aluminum, beryllium, or other similarly ray-transmissive material, in order to keep the loss of radiation as low as possible.
  • a cathode 4 in the form of an incandescent coil is arranged about anode 1 surrounding the latter concentrically.
  • Cathode 4 is externally screened off by means of a deflecting tube 5.
  • the evacuated space enclosed by the tube casing 6, the insulated cathode carrier body 7, and the anode 1, can either be evacuated and sealed off in a known manner or it can be currently evacuated by a vacuum pump (not shown) which is connected to the pipe joint 9.
  • the filament voltage and anode voltage are supplied from sources of electric energy (not shown) by way of connecting wires 10.
  • the voltage counterpole of the anode voltage which is preferably arranged at the casing 6 is not shown in order to simplify the illustration of the invention, nor is the Wiring of the deflecting tube 5 shown, which tube 5 is preferably charged with a negative potential against the cathode 4. However, it is also possible to insulate the deflecting tube 5 and thus completely eliminate the wiring of this tube.
  • a special advantage of the embodiment shown in Figures 1 and 2 resides in the fact that the X-ray tube according to this embodiment can be built of any desired length, and that the objects to be irradiated can be continuously transported through the work space 8.
  • anode 1 is of a substantially semi-cylindrical shape.
  • X-ray tubes having anodes of this type-which show an inwardly curved anode surface, only partially surrounding'the work space, have the advantage that the objects to be irradiated can be placed on a conveyor belt for the arrangement of which there is suificient space available opposite the anode surface]
  • the conveyor belt is indicated schematically at 14.
  • the dosage yield attained in the work space 8 in this embodiment is inferior compared with that of the embodiment shown in Figures 1 and 2.
  • a greater dosage yield can be obtained if two'X-ray tubes of the type shown in Figures '3 and'4 are combined to surround the work space 8 tubularly as in the arrangement shown in Figure 5.
  • The' dosage yield attained by this arrangement in the work space 8 is approximately the same as that of the X-ray tube embodiment shown in Figures 1 and 2.
  • the arrangement of Figure 5 has the advantage, compared with Figures 1 and 2, that the work space 8, as well as a transporting device for the objects to be irradiated which may be disposed in the work space, are more easily accessible. 7 a
  • an X-ray tube shown in Figure 6 permits achieving a particularly high dosage yield in work space 8.
  • anode 1 surrounds the work space 8 in the form of a dome.
  • the objects to be irradiated are introduced into the work space 8 through the opening 13, which is disposed laterally if the work space extends horizontally as shown in Figure 6.
  • the work space may also be completely enclosed by ray transmissive anode surfaces. This is achieved by combining several X ray tubes of suitably shaped anodes,
  • the X-ray tubes according to the invention are particularly useful for radiation with X-rays requiring high X-ray dosages in a relatively short time, where a pointshaped source, or almost'point shaped source,'of 'emanation is of secondary importance.
  • X-ray' tubes according to the invention are, therefore, applicable in medical therapy, in the biologicalfield where organisms are to be destroyed or mutated, in the chemical field where substances are to be decomposed or altered, and in subordinate techniques. These fields comprise the destruction of micro-organisms causing fermentationa'nd other deterioration of food, medicaments, objects of art, and the like; further, the testing of materials used in radiation techniques with regard to their resistance to rays and the testing of other properties of materials.
  • an X-ray tube comprising a concavo-convexX-ray transmissive anode the shape ofwhichis that of at least a portion of a substantially cylindrical surface, the concave side of said anode defining a work space exterior of the tube within which work space an article may be irradiated, and a cathode arranged on the convex' side of said anode and encompassing the same, said cathode being elongated in the direction of the axis of said substantially cylindrical surface and extending throughout substantially the length of said anode to produce a focal spot on-said anode which extends over substantially the entire surface thereof, whereby articles passed through said work space are irradiated substantially uniformly.
  • An X-ray tube as defined in. claim 1 further comprising a concavo-convex X-ray transmissive member having a shape substantially similarto that of said anode and arranged on the concave side thereof so that said anode and member form between themselves passage through which a coolant may flow.
  • X-ray tube as defined in claim 1 further comprising screening means encompassing said cathode for vdeflecting outwardly moving electrons emanating from saidcathode.
  • an X-ray tube as defined in claim 1, and conveyor means for continuously conveying through said work space that whichis to be irradiated; 1

Landscapes

  • X-Ray Techniques (AREA)

Description

Jan. 19, 1960 B. RAJEWSKY X-RAY TUBE OF HIGH OUTPUT 2 Sheets-Sheet l FiledSept. 23, 1955 BUR/5 RAJEWSK/ Attorneys Jan. 19, 1960 B. RAJEWSKY J X-RAY TUBE OF HIGH OUTPUT 2 Sheets-Sheet 2 Filed Sept. 23, 1955 TuM BUR/.5 RAJEWSK/ United States Patent 2,922,060 X-RAY TUBE OF HIGH OUTPUT I Boris Rajewsky, Frankfurt am Main, Germany 1 Application September 23, 1955, Serial No. 536,247
Claims pricrity, application Germany September 25, 1954 8 Claims. (Cl. 313-579) This invention relates to an improved type of source for the emanation of Roentgen rays and more particularly to X-ray tubes having a high output.
it is known that the X-rays which are generated in the focal spot of the anode of an X-ray tube emanate from the focal spot in all directions so that only that portion of the emanation can be effectively utilized which is emitted in the direction toward the object to be irradiated. Consequently, a major share of the emitted X-rays remains unutilized and is absorbed, for instance, by the tube casing. Since the unutilized share of the emanated X-rays increases with the distance of the objects from the focal spot, it is advantageous to approximate the object as'closely as possible to the focal spot so as to obtain a high output or dosage yield of X-rays in the work space, i.e., the space in which the object to be irradiated is located. 'Ihis approximation between the object and the focal spot is achieved in the art, for instance, by using a hollow resonator anode tube such as described, for instance, in the patent to Cassen 2,342,789 relating to super voltage X-ray tube. In tubes of this kind, the X-rays are generated on a flat anode membrane which serves simultaneously as the ray-transmissive window of the tube and is usually cooled by a flow of coolant passing between the aforesaid window and a second outer window. In this known arrangement, almost the entire share of the X-rays directed toward the outside can be utilized; that is to say, the X-rays have a particularly high dosage output in the vicinity of the outer ray-transmissive window due to the short distance of the work space outside that Window from the focal spot.
It is, however, a drawback of this known arrangement that the work space receives its radiation only from one side so that the dosage distribution of the radiationin the work space is relatively homogeneous. Furthermore, the size of the focal spot and, consequently, the load capacity of the tube are limited by the fact that the focal spot must not be substantially larger than the object to be irradiated since, otherwise, too large a portion of the X-rays will not reach the object but by-pass the same. It has been attempted to avoid this drawback by arranging a plurality of such hollow resonator anode tubes on various sides of the work space. However, this requires a considerable amount of apparatus and correspondingly higher expenditure, apart from the fact that frequently the space available is not sufficient.
It is an object of my invention to provide the highest possible dosage yield in a geometrically limited work space.
It is another object of my invention to provide an X-ray tube having a work space which can be continuously traversed by the objects to be irradiated.
It is yet another object of my invention to provide an X-ray tube having a work space which is exposed to a substantially homogeneous irradiation and is simultaneously easily accessible.
2,922,060 Patented Jan. 19, 1960 In order to obtain the aforesaid and other objects and advantages, I have invented an X-ray tube which is provided with an anode being a large concave ray transmissive member, which vaulted surface surrounds the work space at least partially, i.e. on several sides thereof. Since the focal spot can thus be extended over a large surface surrounding the work space under optimal conditions, a large proportion of the generated X-rays can be utilized and a high load capacity of the tube can be attained.
Another advantage of a concave, vaulted anode for use in a concave anode tube resides in the fact that the anode membrane is only subjected to tensile stress.
I have found that it is preferable to arrange the cathode surrounding the anode on the side of the latter facing away from the work space. Improved results are further obtained by providing screening means on the outside of the cathode facing away from the anode. A higher load capacity of the anode is obtained by cooling the same in a suitable manner.
My invention will be better understood upon reference to the accompanying drawings in which Figure l is a longitudinal section through an X-ray tube according to the invention;
Figure 2 is a cross-section along line 2-2 in Figure 1;
Figure 3 shows another embodiment of an X-ray tube according to the invention;
Figure 4 is a sectional view along line 4-4 in Figure 3;
Figure 5 shows an arrangement wherein two X-ray tubes of the type shown in Figures 3 ,and 4 are combined to form a closed work space; and
Figure 6 shows yet another embodiment of an X-ray tube according to the invention in longitudinal section.
Referring now to the drawings more in detail wherein like reference numerals designate like parts, reference numeral 1 indicates the anode which partially surrounds the work space 8. In the embodiment shown in Figures 1 and 2 the ray transmissive anode 1 is tube shaped. An inner tube 2, of ray transmissive material, is disposed concentrically with anode 1 so as to provide a cylindrical channel 3 for the passage of a coolant. The coolant prevents excessive heating of the anode 1 under high loads. Inlet and outlet means 11 and 12 admit a coolant to, and remove the same from chamber 3. The tube 2 can be made, for instance, using aluminum, beryllium, or other similarly ray-transmissive material, in order to keep the loss of radiation as low as possible. A cathode 4 in the form of an incandescent coil is arranged about anode 1 surrounding the latter concentrically. Cathode 4 is externally screened off by means of a deflecting tube 5. The evacuated space enclosed by the tube casing 6, the insulated cathode carrier body 7, and the anode 1, can either be evacuated and sealed off in a known manner or it can be currently evacuated by a vacuum pump (not shown) which is connected to the pipe joint 9.
The filament voltage and anode voltage are supplied from sources of electric energy (not shown) by way of connecting wires 10. The voltage counterpole of the anode voltage which is preferably arranged at the casing 6 is not shown in order to simplify the illustration of the invention, nor is the Wiring of the deflecting tube 5 shown, which tube 5 is preferably charged with a negative potential against the cathode 4. However, it is also possible to insulate the deflecting tube 5 and thus completely eliminate the wiring of this tube.
A special advantage of the embodiment shown in Figures 1 and 2 resides in the fact that the X-ray tube according to this embodiment can be built of any desired length, and that the objects to be irradiated can be continuously transported through the work space 8.
The embodiment shown in Figures 3 and 4 of the drawings is distinguished from the embodiment of Figures 1 and 2 by the fact that anode 1 is of a substantially semi-cylindrical shape. X-ray tubes having anodes of this type-which show an inwardly curved anode surface, only partially surrounding'the work space, have the advantage that the objects to be irradiated can be placed on a conveyor belt for the arrangement of which there is suificient space available opposite the anode surface] The conveyor belt is indicated schematically at 14. However, the dosage yield attained in the work space 8 in this embodiment is inferior compared with that of the embodiment shown in Figures 1 and 2.
A greater dosage yield can be obtained if two'X-ray tubes of the type shown in Figures '3 and'4 are combined to surround the work space 8 tubularly as in the arrangement shown in Figure 5. The' dosage yield attained by this arrangement in the work space 8 is approximately the same as that of the X-ray tube embodiment shown in Figures 1 and 2. Furthermore, the arrangement of Figure 5 has the advantage, compared with Figures 1 and 2, that the work space 8, as well as a transporting device for the objects to be irradiated which may be disposed in the work space, are more easily accessible. 7 a
The embodiment of an X-ray tube shown in Figure 6 permits achieving a particularly high dosage yield in work space 8. As can be seen from Figure 6, anode 1 surrounds the work space 8 in the form of a dome.
The objects to be irradiated are introduced into the work space 8 through the opening 13, which is disposed laterally if the work space extends horizontally as shown in Figure 6.
The work space may also be completely enclosed by ray transmissive anode surfaces. This is achieved by combining several X ray tubes of suitably shaped anodes,
for instance, by opposing two X-ray tubes of the type 7 shown in Figure 6, to one another with their openings 13 facing each other.
The X-ray tubes according to the invention are particularly useful for radiation with X-rays requiring high X-ray dosages in a relatively short time, where a pointshaped source, or almost'point shaped source,'of 'emanation is of secondary importance. X-ray' tubes according to the invention are, therefore, applicable in medical therapy, in the biologicalfield where organisms are to be destroyed or mutated, in the chemical field where substances are to be decomposed or altered, and in subordinate techniques. These fields comprise the destruction of micro-organisms causing fermentationa'nd other deterioration of food, medicaments, objects of art, and the like; further, the testing of materials used in radiation techniques with regard to their resistance to rays and the testing of other properties of materials.
It will be understood that this invention is susceptible to modification in order to adapt it to different usages anode is at and conditions and, accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.
I claim;
1. In an irradiating apparatus, an X-ray tube comprising a concavo-convexX-ray transmissive anode the shape ofwhichis that of at least a portion of a substantially cylindrical surface, the concave side of said anode defining a work space exterior of the tube within which work space an article may be irradiated, and a cathode arranged on the convex' side of said anode and encompassing the same, said cathode being elongated in the direction of the axis of said substantially cylindrical surface and extending throughout substantially the length of said anode to produce a focal spot on-said anode which extends over substantially the entire surface thereof, whereby articles passed through said work space are irradiated substantially uniformly.
2. An X-ray tube as defined in. claim 1 further comprising a concavo-convex X-ray transmissive member having a shape substantially similarto that of said anode and arranged on the concave side thereof so that said anode and member form between themselves passage through which a coolant may flow.
.3.'TAn X-ray tube as defined in claim 1 further comprising screening means encompassing said cathode for vdeflecting outwardly moving electrons emanating from saidcathode.
4. In an irradiating apparatus, an X-ray tube as defined in claim 1, and conveyor means for continuously conveying through said work space that whichis to be irradiated; 1
5. 'An X-raytube as claimed in claim 1 wherein said anode is of cylindrical shape, surrounding said work space on all but two opposite sides.
6. An X-ray tube'as defined in claim 5 wherein said cathode is in the form of acoil.
7(An X-ray tube as claimed in claim 1 wherein said least a portion of a substantially semicylin- :drical shape.
8. Inani irradiating apparatus, two X-ray tubes as defined in claim .7, said tubes being positioned opposite each other so'that the two semicylindrically shaped anodes together define a cylindrical work space.
i References Cited file of this patent UNITED STATES PATENTS 2,602,751 Robinson July 8, 1952
US536247A 1954-09-25 1955-09-23 X-ray tube of high output Expired - Lifetime US2922060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM24623A DE1009325B (en) 1954-09-25 1954-09-25 X-ray tube

Publications (1)

Publication Number Publication Date
US2922060A true US2922060A (en) 1960-01-19

Family

ID=7299343

Family Applications (1)

Application Number Title Priority Date Filing Date
US536247A Expired - Lifetime US2922060A (en) 1954-09-25 1955-09-23 X-ray tube of high output

Country Status (5)

Country Link
US (1) US2922060A (en)
CH (1) CH336912A (en)
DE (1) DE1009325B (en)
FR (1) FR1131398A (en)
GB (1) GB792019A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296476A (en) * 1961-10-31 1967-01-03 Licentia Gmbh X-ray tube
US4034251A (en) * 1976-02-23 1977-07-05 North American Philips Corporation Transmission x-ray tube
US4675890A (en) * 1982-10-05 1987-06-23 Thomson-Csf X-ray tube for producing a high-efficiency beam and especially a pencil beam
US4853581A (en) * 1986-02-10 1989-08-01 Photo Redux Corp. Radiation-emitting devices
US5504799A (en) * 1993-06-18 1996-04-02 Hamamatsu Photonics K.K. X-ray generation tube for ionizing ambient atmosphere
US20080056448A1 (en) * 2006-08-29 2008-03-06 Harris Corporation Soft x-ray radiation for biological pathogen decontamination and medical sterilization applications
US20080181364A1 (en) * 2007-01-29 2008-07-31 Harris Corporation System and method for non-destructive decontamination of sensitive electronics using soft X-ray radiation
US20100201240A1 (en) * 2009-02-03 2010-08-12 Tobias Heinke Electron accelerator to generate a photon beam with an energy of more than 0.5 mev

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265879B (en) * 1962-06-05 1968-04-11 Licentia Gmbh High-performance roentgen tube plant

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2292859A (en) * 1939-11-02 1942-08-11 Gen Electric X-ray tube
US2319350A (en) * 1937-06-14 1943-05-18 Schiebold Ernst X-ray tube and apparatus
US2342789A (en) * 1941-04-19 1944-02-29 Westinghouse Electric & Mfg Co Supervoltage X-ray tube
US2392380A (en) * 1942-12-07 1946-01-08 Sperry Gyroscope Co Inc High-voltage apparatus
US2517260A (en) * 1945-09-18 1950-08-01 Research Corp Apparatus for generating an accurately focused beam of charged particles and for related purposes
US2559526A (en) * 1945-09-18 1951-07-03 Research Corp Anode target for high-voltage highvacuum uniform-field acceleration tube
US2602751A (en) * 1950-08-17 1952-07-08 High Voltage Engineering Corp Method for sterilizing substances or materials such as food and drugs

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE690618C (en) * 1937-01-19 1940-04-30 Siemens Reiniger Werke Akt Ges Device for generating a convergent X-ray bundle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319350A (en) * 1937-06-14 1943-05-18 Schiebold Ernst X-ray tube and apparatus
US2292859A (en) * 1939-11-02 1942-08-11 Gen Electric X-ray tube
US2342789A (en) * 1941-04-19 1944-02-29 Westinghouse Electric & Mfg Co Supervoltage X-ray tube
US2392380A (en) * 1942-12-07 1946-01-08 Sperry Gyroscope Co Inc High-voltage apparatus
US2517260A (en) * 1945-09-18 1950-08-01 Research Corp Apparatus for generating an accurately focused beam of charged particles and for related purposes
US2559526A (en) * 1945-09-18 1951-07-03 Research Corp Anode target for high-voltage highvacuum uniform-field acceleration tube
US2602751A (en) * 1950-08-17 1952-07-08 High Voltage Engineering Corp Method for sterilizing substances or materials such as food and drugs

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296476A (en) * 1961-10-31 1967-01-03 Licentia Gmbh X-ray tube
US4034251A (en) * 1976-02-23 1977-07-05 North American Philips Corporation Transmission x-ray tube
US4675890A (en) * 1982-10-05 1987-06-23 Thomson-Csf X-ray tube for producing a high-efficiency beam and especially a pencil beam
US4853581A (en) * 1986-02-10 1989-08-01 Photo Redux Corp. Radiation-emitting devices
US5504799A (en) * 1993-06-18 1996-04-02 Hamamatsu Photonics K.K. X-ray generation tube for ionizing ambient atmosphere
WO2008027819A3 (en) * 2006-08-29 2008-06-19 Harris Corp Soft x-ray radiation for biological pathogen decontamination and medical sterilization applications
US20080056448A1 (en) * 2006-08-29 2008-03-06 Harris Corporation Soft x-ray radiation for biological pathogen decontamination and medical sterilization applications
US7522702B2 (en) 2006-08-29 2009-04-21 Harris Corporation Soft x-ray radiation for biological pathogen decontamination and medical sterilization applications
US20080181364A1 (en) * 2007-01-29 2008-07-31 Harris Corporation System and method for non-destructive decontamination of sensitive electronics using soft X-ray radiation
WO2008134099A2 (en) * 2007-01-29 2008-11-06 Harris Corporation A system and method for non-destructive decontamination of sensitive electronics using soft x-ray radiation
WO2008134099A3 (en) * 2007-01-29 2008-12-24 Harris Corp A system and method for non-destructive decontamination of sensitive electronics using soft x-ray radiation
US7580506B2 (en) 2007-01-29 2009-08-25 Harris Corporation System and method for non-destructive decontamination of sensitive electronics using soft X-ray radiation
US8280004B2 (en) 2007-01-29 2012-10-02 Harris Corporation System and method for non-destructive decontamination of sensitive electronics using soft x-ray radiation
KR101199633B1 (en) 2007-01-29 2012-11-08 해리스 코포레이션 An apparatus and method for non-destructive decontamination of sensitive electronics using soft x-ray radiation
US20100201240A1 (en) * 2009-02-03 2010-08-12 Tobias Heinke Electron accelerator to generate a photon beam with an energy of more than 0.5 mev

Also Published As

Publication number Publication date
CH336912A (en) 1959-03-15
FR1131398A (en) 1957-02-20
DE1009325B (en) 1957-05-29
GB792019A (en) 1958-03-19

Similar Documents

Publication Publication Date Title
US7542549B2 (en) X-ray source with nonparallel geometry
US4293772A (en) Wobbling device for a charged particle accelerator
US4163901A (en) Compact irradiation apparatus using a linear charged-particle accelerator
US2922060A (en) X-ray tube of high output
US5940469A (en) Multi-chromatic x-ray source
US6191424B1 (en) Irradiation apparatus for production line use
US7148613B2 (en) Source for energetic electrons
DE3173649D1 (en) X-ray tube
US20100189222A1 (en) Panoramic irradiation system using flat panel x-ray sources
JP2747295B2 (en) Radiation source that produces essentially monochromatic X-rays
US3833814A (en) Apparatus for simultaneously uniformly irradiating a region using plural grid controlled electron guns
US6141400A (en) X-ray source which emits fluorescent X-rays
US9324535B2 (en) Self contained irradiation system using flat panel X-ray sources
US9484177B2 (en) Longitudinal high dose output, through transmission target X-ray system and methods of use
US2887583A (en) Electron accelerator for irradiation
US20210241991A1 (en) X-Ray Tube with Distributed Filaments
US7469040B2 (en) X-ray tube for high dose rates, method of generating high dose rates with X-ray tubes and a method of producing corresponding X-ray devices
US2896105A (en) High capacity x-ray tube
CN109698105B (en) High dose delivery, transmission and reflection target X-ray system and method of use
CN101720492B (en) Device for generating X-ray radiation and having a large real focus and a virtual focus which are adjusted as required
US3267315A (en) X-ray source comprising plural removable modular units each having an anode targetand cathode
CN102602894A (en) X-ray generator employing hemimorphic crystal and ozone generator employing it
US3821579A (en) X ray source
CN102789942A (en) Special transmission-type direct water-cooling anode super-large focus X ray tube for radiation
CN116830214A (en) Irradiation apparatus