JPH0458940U - - Google Patents
Info
- Publication number
- JPH0458940U JPH0458940U JP9994190U JP9994190U JPH0458940U JP H0458940 U JPH0458940 U JP H0458940U JP 9994190 U JP9994190 U JP 9994190U JP 9994190 U JP9994190 U JP 9994190U JP H0458940 U JPH0458940 U JP H0458940U
- Authority
- JP
- Japan
- Prior art keywords
- electron beam
- cylindrical permanent
- magnetic field
- focusing
- permanent magnet
- 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.)
- Pending
Links
- 230000000737 periodic effect Effects 0.000 claims description 4
- 238000010894 electron beam technology Methods 0.000 claims 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Microwave Tubes (AREA)
Description
第１図ａは本考案の一実施例の周期磁界集束装
置の軸断面図、第１図ｂは軸に垂直な断面図、第
２図ａは従来例による周期磁界集束装置の軸断面
図、第２図ｂは軸に垂直な断面図である。
１……高周波回路、２……非磁性金属管、３…
…円筒状永久磁石、４……ポールピース、５，６
……小磁性体。
FIG. 1a is an axial sectional view of a periodic magnetic field focusing device according to an embodiment of the present invention, FIG. 1b is a sectional view perpendicular to the axis, and FIG. 2a is an axial sectional view of a periodic magnetic field focusing device according to a conventional example. FIG. 2b is a sectional view perpendicular to the axis. 1...High frequency circuit, 2...Nonmagnetic metal tube, 3...
...Cylindrical permanent magnet, 4...Pole piece, 5, 6
...Small magnetic material.
Claims (1)
ムを集束するための複数個の円筒状永久磁石とポ
ールピースが交互に組み合わされ、かつ、円筒状
永久磁石あるいはポールピースの外周面に電子ビ
ームへ作用する磁界強度を調整するための複数個
の小磁性体が付加された周期磁界集束装置におい
て、前記小磁性体の一面が、前記円筒状永久磁石
あるいはポールピースの外周面と同じ曲率半径を
持つことを特徴とする周期磁界集束装置。 A plurality of cylindrical permanent magnets and pole pieces for focusing the electron beam are alternately combined around the outer periphery of the high-frequency circuit of the electron beam tube, and a plurality of cylindrical permanent magnets or pole pieces for focusing the electron beam are arranged on the outer circumferential surface of the cylindrical permanent magnet or the pole piece to act on the electron beam. In a periodic magnetic field focusing device to which a plurality of small magnetic bodies are added for adjusting the magnetic field strength, one surface of the small magnetic bodies has the same radius of curvature as the outer peripheral surface of the cylindrical permanent magnet or pole piece. A periodic magnetic field focusing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9994190U JPH0458940U (en) | 1990-09-25 | 1990-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9994190U JPH0458940U (en) | 1990-09-25 | 1990-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0458940U true JPH0458940U (en) | 1992-05-20 |
Family
ID=31842228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9994190U Pending JPH0458940U (en) | 1990-09-25 | 1990-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0458940U (en) |
-
1990
- 1990-09-25 JP JP9994190U patent/JPH0458940U/ja active Pending
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