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Volume 24, Issue 9
Displaying 1-5 of 5 articles from this issue
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Shigeyuki YAMAMOTO1981 Volume 24 Issue 9 Pages 495-501
Published: September 20, 1981
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSDownload PDF (2823K) -
Yasutoshi SAITO, Tsuneo HOMMA, Yutaka SHINATA, Mitsuo TEZUKA, Hiroshi ...1981 Volume 24 Issue 9 Pages 502-507
Published: September 20, 1981
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSA scanning-type exoelectron microscope (EE microscope) has been designed and constructed for the examination of a damaged metal surface. The specimen surface is scanned line by line along the X- and Y-directions with a spot of ultraviolet beam in a vacuum chamber. Photostimulated exoelectron emission (PSEE) from the specimen is detected by an electron multiplier, producing an image of PSEE on the screen of an oscilloscope. The EE microscope is basically applied in the following ways.
(1) The PSEE signal is fed to the Z-input of the oscilloscope after theD-A conversion by a ratemeter, giving a picture of brightness modulation, i.e., an exoelectron microphotograph (EEM-I).
(2) The output pulse is directly fed to the Z-input, displaying the distribution of the PSEE intensity (EEM-II).
(3) The PSEE intensity is recorded as a function of the position along a scanned path (line profile).
The EE microscope has proved to be a useful tool for the study of tensile- and fatigue-deformed metal surfaces.View full abstractDownload PDF (1747K) -
Shigeyuki MORI, Taka-aki YUASA, Yasukatsu TAMAI1981 Volume 24 Issue 9 Pages 508-511
Published: September 20, 1981
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSPhotostimulated exoelectron from cut aluminum has been measured with a picoammeter under various atmospheres at low pressure. The decaying characteristics of exoemission were different between atmospheres. The emission intensity under reductive atmospheres such as hydrogen, carbon monoxide, ammonia and n-hexane, decayed more slowly than under vacuum. The decaying curves of exoemission under oxidative atmospheres such as oxygen, dinitrogen oxide and ethyl iodode, consisted in two steps. The emission intensity decayed rapidly followed by recovering, and then decayed moderately. The role of the adsorbed layer on exoemission characteristics was discussed.View full abstractDownload PDF (631K) -
Shigeru OKABE, Masayoshi AOKI, Kunihiko TSUMORI, Takeyoshi SEIYAMA, Sh ...1981 Volume 24 Issue 9 Pages 512-516
Published: September 20, 1981
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSExoelectron transmission through thin films is studied by evaporating non-exoelectron materials on exoelectron emission surfaces. The transmission curves through carbon and gold films are separated into two components, the thin film transmission part and the thicker film one. The decay rate in the later part shows almost the same tendency in various films and it is considered as a kind of diffusion process. This isan interesting result from the point of view of low energy electron transmission.View full abstractDownload PDF (540K) -
Masao KAMADA, Kenjiro TSUTSUMI1981 Volume 24 Issue 9 Pages 517-519
Published: September 20, 1981
Released on J-STAGE: September 29, 2009
JOURNAL FREE ACCESSA report is given on simultaneous measurements of thermally stimulated exoelectron emission (TSEE) and thermoluminescence in alkali halides X-irradiated at about 77 K, by using a clean high vacuum system. Intensities of the TSEE glow peaks below 270K are found to be much stronger than those obtained by using a diffusion-pump system. It is also reported that TSEE glow curves of the specimens cleaved in air and in a vacuum are different from each other.View full abstractDownload PDF (420K)
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