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Hokkai PEEM Co. Ltd. "myPEEM"

Hokkai Photoelectron Co. Ltd.

Welcome to Hokkai PEEM Co. Ltd.

.myPEEM.Spin Rotator
Fluke
ServeyMeter
Fluke
Thermograph
JEOL Desktop
SEM
Review PEEM
Suga Thin Film
Evaporator
Sun
Technologies
Aqua6500

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Hokkai PEEM Co. Ltd. is a company locating in Sapporo, Hokkaido, inside the Hokkaido

colaborating with Professor K. Asakura, Catalysis Research Center, Hokkaido
Hokkai University,University. Sales products are PEEM (Photo Electron Emission Microscope) and various
attachmentsof PEEM. The electron optical design has been made of EOSTsuno ,PEEM mechanical design
and production has been done by Suga Production Co. Ltd., electricaldesign, production and computer control by CS Tokki Co. Ltd. Basic idea of PEEM andCo.
its application are made in the Asakura Laboratory of Hokkaido University. Hokkai PEEM
Co. Ltd. sales not only PEEMs but also various energy analyzers, spin rotators, electron
Ltd.
lenses made of static and magnetic and various beam deflector and stigmators.

Hokkai PEEM Co. Ltd. locates inside Hokkaido University in Sapporo, Hokkaido,
Japan. It was established in 2008 to promote Analytical PEEM under thecollaboration of Hokkaido University, Hokkaido Prefecture and some othercompanies. Hokkai PEEM Co. Ltd. work on sales and services of promoting PEEM
instruments.

Fig.1. Hokkaido University and Hokkai PEEM Co.
Ltd.

myPEEM (PhotoElectron EmissionMicroscope)[Product of Suga Product Co. Ltd.]
Fig. 3. Mesh
image
taken by
myPEEM.

The present main product of PEEM (named "myPEEM") is shown in Fig. 2.
Basicspecifications of myPEEM are: merculy lump is used as a source of theillumination beam (cahgeable to a laser light), accelerating voltage of 10kV, threeelectrostatic lenses, electrostatic deflector and stigmator, maximum magnification
up to 1000times. High contrast image can be obtained with a help of a suitable
aperture insertion.
A main concept of myPEEM is easy operation even for beginers. There are noillumination beam system like TEM (transmission electron microscopes) and SEM(Scanning Electron Microscope) and LEEM (Low energy Reflection ElectronMicroscopes), and therefore simple in its construction and operation. The electron
beam is generated by the photoemission effect found by Einstein. Because theintensity of the electron beam is proportional to the intensity of light, if you usean
intense laser light, you can obtain a strong bright PEEM intensity. However,
myPEEM has a adjustable selection mechanism of the aperture, you can get astrong contrast of images even use an usual mercury light as seen in Fig.3.

Fig. 4. 3D Image
of
myPEEM lenses.

Fig. 4 shows a 3D CAD image of Electrostatic lenses. Fig. 5 is a schematic drawingof the optical system and ray tracing of myPEEM. Parallel illumination beamfocusses at the end of the objective lens. The aperture is inserted here in after theobjective lens of earth potential. In PEEM, high voltage is applied to the objective
lensto accelerate the electron beam, because the emitted electrons from thespecimen have only a few electron volt energy. So that, it is usually very difficult toinsert the aperture at the exact point of the focus plane. However, in myPEEM, thefoccussing position (diffraction plane) is set just after the objective lens, where it isthe earth potential. It is easy to select the suitable aperture position and get a highcontrast. Furthermore, in myPEEM, four stage electroelectro-static lens is used. In
usually, such the lens consists of three stage einzel lens. Additional electrode inmyPEEM is used to adjust the acurate focus on the diffracted beam on theaperture. This is the key technology of myPEEM.

Fig. 2. External view and drawing of myPEEM.
The main sales product of Hokkai PEEM Co.
Ltd.

Fig. 5. Schematically drawing and ray tracing ofmyPEEM.

Fig. 6 shows a photograph of myPEEM attached with an ionion-gun and specimen
heater. Our myPEEM has a wide vacuum chamber in which various attachments
can be installed. Although the specimen is floating on the high voltage of 10kV, if
the attachment is not contact with the specimen, it does not influence on theoptics. Of course, when you want to change the specimen, high voltage becomes
automatically off, and you can tatch the specimen on your hands.

myPEEM

myPEEM with Suga Co.

Electron Optics
EOSTsuno
Suga Products. Co.
Ltd.
JEOL Ltd.
Tanaka Co. Ltd.

Energy Analyzers
Spin rotators

Ion Gun, Specimen
HeaterElectron Lenses
Beam deflectors

ALD (Thin Film Production)

Fig. 6. Ion Gun and Specimen Heating
attachments installed in myPEEM.

NeoScope (Desktop SEM)
Smashing machine
Thermography
γ-ray detector*************************************************************
Contact to:
Hokkai Photoelectron Co. Ltd.
Room G in Colabo Hokkaido
North 21, West 12, Kita-Ku, Sapporo, Hokkaido 001-0021, Japan
TEL/FAX 011-737-9162 E-mail info@hpeem.com URL〒001-0021 札幌市北区北２１条西１２丁目
コラボ北海道 Ｇルーム
株式会社北海光電子 武藤正雄
会社案内
http://hpeem.com/
Produced in 2011/12/08

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