GB907986A - Improvements in or relating to ultraviolet radiation sources - Google Patents

Improvements in or relating to ultraviolet radiation sources

Info

Publication number
GB907986A
GB907986A GB25506/59A GB2550659A GB907986A GB 907986 A GB907986 A GB 907986A GB 25506/59 A GB25506/59 A GB 25506/59A GB 2550659 A GB2550659 A GB 2550659A GB 907986 A GB907986 A GB 907986A
Authority
GB
United Kingdom
Prior art keywords
radiation
air
july
hydrogen
filled
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
GB25506/59A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB907986A publication Critical patent/GB907986A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/06—Lamps in which a gas filling is excited to luminesce by radioactive material structurally associated with the lamp, e.g. inside the vessel

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Discharge Lamp (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

907,986. Humidity determination. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 24, 1959 [July 29, 1958], No. 25506/59. Drawings to Specification. Class 40 (3). [Also in Group XL (a)] Humidity of air is determined by passing radiation of 1216Š through an air sample and into a photon Geiger counter having a window permeable to the radiation and filled with nitric oxide. Comparison is made with the counting rates obtained with air samples having known moisture content. The source of 1216Š radiation is a glass or metal vessel having a lithium fluoride window and filled with tritium gas at a pressure of 1 atmosphere and with or without hydrogen. The metal or glass part of the vessel can be coated internally with a reflecting layer of platinum and can contain a tungsten filament for facilitating dissociation of the trietium and hydrogen.
GB25506/59A 1958-07-29 1959-07-24 Improvements in or relating to ultraviolet radiation sources Expired GB907986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US751747A US2990491A (en) 1958-07-29 1958-07-29 Far ultraviolet light source

Publications (1)

Publication Number Publication Date
GB907986A true GB907986A (en) 1962-10-10

Family

ID=25023312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25506/59A Expired GB907986A (en) 1958-07-29 1959-07-24 Improvements in or relating to ultraviolet radiation sources

Country Status (5)

Country Link
US (1) US2990491A (en)
DE (1) DE1085965B (en)
FR (1) FR1234391A (en)
GB (1) GB907986A (en)
NL (2) NL241561A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2424755A (en) * 2005-03-31 2006-10-04 Heraeus Nobelight Analytics Lt A low-pressure discharge lamp for a photoionisation detector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535576A (en) * 1968-11-21 1970-10-20 Honeywell Inc Photoionization device with electrodes attached to exterior of envelope
FR2430089A1 (en) * 1978-06-28 1980-01-25 Anvar Lyman alpha spectral radiation lamp - comprising envelope filled with hydrogen which is dissociated by heating and excited to characteristic energy of heater filament
US4818915A (en) * 1987-10-22 1989-04-04 Gte Products Corporation Arc discharge lamp with ultraviolet radiation starting source
US4812714A (en) * 1987-10-22 1989-03-14 Gte Products Corporation Arc discharge lamp with electrodeless ultraviolet radiation starting source

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB646414A (en) * 1946-05-31 1950-11-22 Egyesuelt Izzolampa Improvements in and relating to fluorescent luminous bodies
US2699515A (en) * 1953-08-21 1955-01-11 Gordon E Williams Lamp construction
US2804573A (en) * 1954-01-21 1957-08-27 William J Arrol Gas discharge devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2424755A (en) * 2005-03-31 2006-10-04 Heraeus Nobelight Analytics Lt A low-pressure discharge lamp for a photoionisation detector

Also Published As

Publication number Publication date
NL241561A (en)
FR1234391A (en) 1960-10-17
US2990491A (en) 1961-06-27
DE1085965B (en) 1960-07-28
NL125811C (en) 1968-12-17

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