Use of a channelled image intensifier in the field-ion microscope

Turner, Patricia; Cartwright, P. F. S.; Southon, M.J.; Oostrom, A. van; Manley, B.W.

doi:10.1088/0022-3735/2/8/332

Cited by 73 publications

(34 citation statements)

References 6 publications

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“…A gain of approximately lo3 in the brightness of neon images is obtained by using this method (Turner, 1967). The incorporation of a channel plate in place of the fine mesh increases the gain by a factor of approximately lo3 (Turner et al, 1969). This extra gain will be illustrated in section 3, where some results are presented from both types of converter.…”

Section: (23) Intensificationmentioning

confidence: 98%

“…The channel plate used here has an inter-channel spacing of 50 pm. The original versions of these converters (Turner, 1967;Turner et al, 1969) used a solenoid to produce the magnetic field. In the present arrangement a cylindrical permanent magnet surrounding the converter tube is used to produce an axial magnetic field of approximately 260 gauss.…”

Section: (23) Intensificationmentioning

confidence: 99%

“…neon) were used, it was found that the intensity of the image produced on a phosphor screen was extremely low. As a result either an external image intensifier (McLane et al, 1964) or some form of internal intensification (Turner, 1967;Turner et al, 1969) is desirable. A scale drawing of the cross-section of the stainless steel microscope head, showing the glass specimen holder, glass image converter tube and Alcomax permanent magnet.…”

Section: (1) Introductionmentioning

confidence: 99%

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A versatile field‐ion microscope for metallographic studies

Davies

Ralph

1970

Journal of Microscopy

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Section: (23) Intensificationmentioning

confidence: 98%

Section: (23) Intensificationmentioning

confidence: 99%

Section: (1) Introductionmentioning

confidence: 99%

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A versatile field‐ion microscope for metallographic studies

Davies

Ralph

1970

Journal of Microscopy

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“…The recently developed channel plate image intensifier (Turner et al, 1969) (a device that also converts an incoming ion signal to an intensified electron signal) has enabled us to achieve sufficient image intensification to investigate images obtained from biomolecules at field strengths below their desorption field strength. Some preliminary results of our investigation of F I M images of biomolecules obtained at low field strengths were reported in 1971 (Machlin, 1971).…”

Section: Introductionmentioning

confidence: 99%

Field ion microscopy of biomolecules

Machlin

Freilich

Agrawal

et al. 1975

Journal of Microscopy

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A new type of image, existing only at field strengths below the denaturation field strengths of molecules, has been discorvered. This type of image has structure, is not symmetrical and thus differs from previously reported low field strength images. The possibility that macromolecules adsorbed on tip surfaces produce such structured images has been exhaustively investigated. The result is that no observation has been found which disproves this hypothesis and many tests conducted in such attempts yielded correlations consistent with this hypothesis. It is therefore concluded that it is highly probable that biomolecules produce structured images and that it is highly improbable that these correlations represent a chance event. On the other hand, these correlations may be due to some cause unknown to the authors; but we consider this possibility to be unlikely. Some micrographs have been obtained which provide a reasonable basis for the hope that tertiary structure information may be defrived from low field strength imaging of partially embedded biomolecules or of biomolecules that are resistant to field denaturation during imaging. Information may presently be obtained from analysis of low field strength ion micrographs about the size and shape of some biomolecules.

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“…This was due to different trajectories for the imaging gas ion formed about 4 Å above the surface and the metal ion from the surface. Later in the same year the channel plate image intensifier was introduced with a gain of ≈10 3 (Turner et al, 1969). It was an imaging revolution because this simple device could be placed within an FIM and the dark adaption required to see a faint FIM image was no longer necessary.…”

mentioning

confidence: 99%

My Life With Erwin: The Beginning of an Atom-Probe Legacy

Panitz

2019

Microsc Microanal

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The atom-probe field ion microscope was introduced in 1967 at the 14th Field Emission Symposium held at the National Bureau of Standards (now, NIST) in Gaithersburg, Maryland. The atom-probe field ion microscope was, and remains, the only instrument capable of determining “the nature of one single atom seen on a metal surface and selected from neighboring atoms at the discretion of the observer”. The development of the atom-probe is a story of an instrument that one National Science Foundation (NSF) reviewer called “impossible because single atoms could not be detected”. It is also a story of my life with Erwin Wilhelm Müller as his graduate student in the Field Emission Laboratory at the Pennsylvania State University in the late 1960s and his strong and volatile personality, perhaps fostered by his pedigree as Gustav Hertz’s student in the Berlin of the 1930s. It is the story that has defined by scientific career.

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Use of a channelled image intensifier in the field-ion microscope

Cited by 73 publications

References 6 publications

A versatile field‐ion microscope for metallographic studies

A versatile field‐ion microscope for metallographic studies

Field ion microscopy of biomolecules

My Life With Erwin: The Beginning of an Atom-Probe Legacy

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