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公开(公告)号：US3117224A
公开(公告)日：1964-01-07
申请号：US12803261
申请日：1961-07-31
Applicant: VARIAN ASSOCIATES
Inventor： FRANCIS ARTHUR B , BARRINGTON ALFRED E , HELMER JOHN C
IPC: H01J49/32
CPC classification number: H01J49/32
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公开(公告)号：US3338506A
公开(公告)日：1967-08-29
申请号：US43753765
申请日：1965-03-05
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C
IPC: H01J41/16
CPC classification number: H01J41/16
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3.发明授权Low energy electron diffraction apparatus having three concentric tubular focusing elctrodes 失效具有三个同心管状聚焦电极的低能电子衍射装置
公开(公告)号：US3313936A
公开(公告)日：1967-04-11
申请号：US33579364
申请日：1964-01-06
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C , TAYLOR NORMAN J
IPC: G01Q60/10 , H01J37/06 , H01J37/063 , H01J37/20 , H01J37/24 , H01J37/295 , H01J49/48
CPC classification number: H01J49/488 , H01J37/06 , H01J37/063 , H01J37/20 , H01J37/24 , H01J37/295
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公开(公告)号：US3214630A
公开(公告)日：1965-10-26
申请号：US83234659
申请日：1959-08-07
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C , STURROCK PETER A , HODGES ELDRED B
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5.发明授权
公开(公告)号：US3596091A
公开(公告)日：1971-07-27
申请号：US3596091D
申请日：1969-05-19
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C , WEICHERT NORBERT H
CPC classification number: H01J49/484 , H01J49/482
Abstract: An induced electron emission spectrometer is disclosed which includes a conductive sample enclosure operable at a potential independent of the potential applied to the spectrometer slit defining electrode of the spectrometer. The sample enclosure includes a wall portion made of a metallic foil to define an Xray window through which the sample is irradiated with X-rays to induce electron emission from the sample.
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Patent Agency Ranking6.发明授权Dual orbit mass spectrometer for analyzing ions in the mass range of 1 to 100 失效用于分析质量范围为1至100的离子的双轨道质谱仪
公开(公告)号：US3387131A
公开(公告)日：1968-06-04
申请号：US47220265
申请日：1965-07-15
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C
IPC: H01J49/30
CPC classification number: H01J49/30
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公开(公告)号：US3159333A
公开(公告)日：1964-12-01
申请号：US13288961
申请日：1961-08-21
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C
IPC: H01J41/20
CPC classification number: H01J41/20
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公开(公告)号：US3582648A
公开(公告)日：1971-06-01
申请号：US3582648D
申请日：1968-06-05
Applicant: VARIAN ASSOCIATES
Inventor： ANDERSON WESTON A , HELMER JOHN C
CPC classification number: H01J49/446 , H01J49/06
Abstract: An electron impact time of flight spectrometer including means providing monochromatic electrons of a predetermined kinetic energy which are caused to impinge upon a sample material so that some of the electrons experience an energy transition in passing through the material. The electrons are then differentially accelerated such that electrons having similar energy levels will be caused to converge and arrive at a detector in tightly formed bunches.
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公开(公告)号：US3435334A
公开(公告)日：1969-03-25
申请号：US3435334D
申请日：1966-04-04
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C
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10.发明授权High vacuum pump employing apertured penning cells driving ion beams into a target covered by a getter sublimator 失效高真空泵采用有孔的笔芯将离子束驱动到由吸气剂升华器覆盖的目标中
公开(公告)号：US3416722A
公开(公告)日：1968-12-17
申请号：US62859067
申请日：1967-04-05
Applicant: VARIAN ASSOCIATES
Inventor： HELMER JOHN C
IPC: H01J41/20
CPC classification number: H01J41/20
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