JPS62129759U - - Google Patents
Info
- Publication number
- JPS62129759U JPS62129759U JP1653286U JP1653286U JPS62129759U JP S62129759 U JPS62129759 U JP S62129759U JP 1653286 U JP1653286 U JP 1653286U JP 1653286 U JP1653286 U JP 1653286U JP S62129759 U JPS62129759 U JP S62129759U
- Authority
- JP
- Japan
- Prior art keywords
- potential
- secondary electron
- cylindrical body
- maintained
- center hole
- 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.)
- Granted
Links
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000005684 electric field Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1653286U JPH0518841Y2 (https=) | 1986-02-07 | 1986-02-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1653286U JPH0518841Y2 (https=) | 1986-02-07 | 1986-02-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62129759U true JPS62129759U (https=) | 1987-08-17 |
| JPH0518841Y2 JPH0518841Y2 (https=) | 1993-05-19 |
Family
ID=30808473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1653286U Expired - Lifetime JPH0518841Y2 (https=) | 1986-02-07 | 1986-02-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0518841Y2 (https=) |
-
1986
- 1986-02-07 JP JP1653286U patent/JPH0518841Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0518841Y2 (https=) | 1993-05-19 |