GB1199786A - Tip Array Field Ionization Source - Google Patents

Tip Array Field Ionization Source

Info

Publication number
GB1199786A
GB1199786A GB48883/67A GB4888367A GB1199786A GB 1199786 A GB1199786 A GB 1199786A GB 48883/67 A GB48883/67 A GB 48883/67A GB 4888367 A GB4888367 A GB 4888367A GB 1199786 A GB1199786 A GB 1199786A
Authority
GB
United Kingdom
Prior art keywords
ionization source
array
degrees
field ionization
tips
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
GB48883/67A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering Co
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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB1199786A publication Critical patent/GB1199786A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • H01J49/10—Ion sources; Ion guns
    • H01J49/16—Ion sources; Ion guns using surface ionisation, e.g. field-, thermionic- or photo-emission

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

1,199,786. lon sources. ESSO RESEARCH & ENG. CO. 27 Oct., 1967 [13 Sept., 1967], No. 48883/67. Heading H1D. A mass spectrometer field-ionization source comprises an array of parallel anode tips in single linear array, Fig. 3A, double linear array, Fig. 3B, or areal array, Fig. 3C, the tips being adjustable by pivoting the anode holder (31, Fig. 2) to lie at an angle, e.g. 30 to 50 degrees, preferably 40 degrees, to the ion exit slit in the complementary cathode member. Suitable dimensions and voltages are given. The ion source may include for alternative use an electron beam bombardment ion source arrangement provided below the field ionization source, Fig. 2 (not shown). Beam centering and focussing plates are provided.
GB48883/67A 1967-09-13 1967-10-27 Tip Array Field Ionization Source Expired GB1199786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67404067A 1967-09-13 1967-09-13

Publications (1)

Publication Number Publication Date
GB1199786A true GB1199786A (en) 1970-07-22

Family

ID=24705079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48883/67A Expired GB1199786A (en) 1967-09-13 1967-10-27 Tip Array Field Ionization Source

Country Status (3)

Country Link
US (1) US3530290A (en)
DE (1) DE1648895A1 (en)
GB (1) GB1199786A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL213062A (en) * 1956-01-27
DE1171641B (en) * 1961-08-11 1964-06-04 Telefunken Patent Ion source for mass spectrometers working according to the principle of field ion emission and process for the production of the ion mission electrode
US3405263A (en) * 1966-01-14 1968-10-08 Exxon Research Engineering Co Dual mass spectrometer ion source comprising field ionization and electron bombardment sources and the method of use

Also Published As

Publication number Publication date
US3530290A (en) 1970-09-22
DE1648895A1 (en) 1971-07-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees