GB701050A - Improvements in or relating to x-ray tubes - Google Patents

Improvements in or relating to x-ray tubes

Info

Publication number
GB701050A
GB701050A GB7216/50A GB721650A GB701050A GB 701050 A GB701050 A GB 701050A GB 7216/50 A GB7216/50 A GB 7216/50A GB 721650 A GB721650 A GB 721650A GB 701050 A GB701050 A GB 701050A
Authority
GB
United Kingdom
Prior art keywords
cathode
anticathode
region
envelope
electrodes
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
Application number
GB7216/50A
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
Publication of GB701050A publication Critical patent/GB701050A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H01J35/147—Spot size control

Abstract

701,050. X-ray tubes. EHRENBERG, W., and SPEAR, W. E. March 22, 1950, No. 7216/50. Class 39(1) A fine-focus X-ray tube has an electrostatic lens system providing an equipotential surface in the region of cathode potential, said surface surrounding the whole of the discharge path from cathode to anticathode, and increasing in diameter in this direction. The embodiment shown has a hairpin filament 5 carried by a mounting 6, and surrounded by a cylindrical electrode 7. The electrode 7 is extended as a cylindrical member 10, terminating in an anti-corona ring 11, and has an internal diaphragm 8 with a central aperture 9 substantially co-planar with the filament tip. The member 10 need not be integral with 7, and also the ring 11 may be mounted on a separate partition, Fig. 3 (not shown). In this case a small variable p.d. can be applied between the electrodes 7, 10 on the one hand, and the envelope 1 and the partition, for focus correction. The cathode structure is mounted on a bellows and screw arrangement to permit mechanical adjustment from outside the envelope. The anticathode 18 is hollow for water-cooling: The electrodes 7, 10 and metal envelope 1 are all' in the region of cathode potential, i.e., any difference therefrom is small in relation to the p.d. between cathode and anticathode. Thus an equipotential surface in the region of cathode potential surrounds the whole discharge path. This may increase gradually in diameter from cathode to anticathode, or as in the present example, in a single large step. Suitable dimensions are given as a guide to construction. Specification 657;140 is referred to.
GB7216/50A 1950-03-22 1950-03-22 Improvements in or relating to x-ray tubes Expired GB701050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB282525X 1950-03-22

Publications (1)

Publication Number Publication Date
GB701050A true GB701050A (en) 1953-12-16

Family

ID=10272715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7216/50A Expired GB701050A (en) 1950-03-22 1950-03-22 Improvements in or relating to x-ray tubes

Country Status (5)

Country Link
US (1) US2651727A (en)
CH (1) CH282525A (en)
DE (1) DE922365C (en)
FR (1) FR1016199A (en)
GB (1) GB701050A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149115B (en) * 1959-06-11 1963-05-22 Hilger & Watts Ltd Fine focus x-ray tube

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967245A (en) * 1954-03-08 1961-01-03 Schlumberger Well Surv Corp Neutron source for well logging apparatus
BE538316A (en) * 1954-06-01
US3916202A (en) * 1974-05-03 1975-10-28 Gen Electric Lens-grid system for electron tubes
GB1597841A (en) * 1977-01-19 1981-09-09 Nicolet Xrd Corp Electron beam focussing
DE3222511C2 (en) * 1982-06-16 1985-08-29 Feinfocus Röntgensysteme GmbH, 3050 Wunstorf Fine focus X-ray tube
US5165093A (en) * 1992-03-23 1992-11-17 The Titan Corporation Interstitial X-ray needle
DE4407132C2 (en) * 1994-03-04 2003-07-10 Daimler Chrysler Ag Two-seat small car
EP2502237A4 (en) 2009-11-16 2015-12-30 Schlumberger Technology Bv High voltage supply for compact radiation generator

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE241441C (en) *
DE313957C (en) * 1911-06-02 1919-08-04 A.E.G. high vacuum x-ray tube with glow cathode
DE319078C (en) * 1915-04-19 1920-02-10 Aeg X-ray tube
DE374018C (en) * 1919-11-09 1923-04-19 Julius Edgar Lilienfeld Dr High vacuum vent tube
US1526465A (en) * 1920-01-03 1925-02-17 Sharples Separator Company Process of producing emulsions
DE367707C (en) * 1920-05-16 1923-01-25 C H F Mueller Roentgenroehrenf Incandescent cathode x-ray tubes for generating sharp x-ray images
NL14471C (en) * 1922-12-06 1926-03-15
NL18912C (en) * 1924-03-10
NL25627C (en) * 1924-06-04
DE473929C (en) * 1925-08-05 1929-03-23 Phoenix Roentgenroehrenfabrike Cover inside x-ray tubes
DE484271C (en) * 1925-12-24 1929-10-14 Phoenix Roentgenroehrenfabrike X-ray tube
DE500103C (en) * 1926-04-03 1930-06-27 Siemens Reiniger Veifa Ges Fue X-ray tube
US1715152A (en) * 1926-04-30 1929-05-28 Westinghouse Lamp Co X-ray tube
US1917099A (en) * 1929-10-18 1933-07-04 Gen Electric x-ray tube
US2090636A (en) * 1930-12-06 1937-08-24 Dimitry E Olshevsky X-ray tube
US2186380A (en) * 1931-10-22 1940-01-09 Arthur Mutscheller X-ray tube
US2157718A (en) * 1935-02-26 1939-05-09 Mutscheller Arthur X-ray tube
DE714743C (en) * 1939-04-07 1941-12-05 Siemens Ag X-ray tubes with thin anode, in particular hollow anode tube
US2291948A (en) * 1940-06-27 1942-08-04 Westinghouse Electric & Mfg Co High voltage X-ray tube shield
GB560155A (en) * 1942-08-19 1944-03-22 Mullard Radio Valve Co Ltd Improvements relating to getters for electron discharge tubes
US2543082A (en) * 1943-06-22 1951-02-27 David L Webster Cavity resonator device for production of high-speed electrons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149115B (en) * 1959-06-11 1963-05-22 Hilger & Watts Ltd Fine focus x-ray tube

Also Published As

Publication number Publication date
US2651727A (en) 1953-09-08
CH282525A (en) 1952-04-30
DE922365C (en) 1955-01-13
FR1016199A (en) 1952-11-04

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